CN105459888B

CN105459888B - Photoluminescent vehicle graphics

Info

Publication number: CN105459888B
Application number: CN201510604054.3A
Authority: CN
Inventors: 斯图尔特·C·萨尔特; 吉姆·J·苏尔曼; 康奈尔·路易斯·加德纳; 保罗·肯尼思·德洛克
Original assignee: Ford Global Technologies LLC
Current assignee: Ford Global Technologies LLC
Priority date: 2014-09-30
Filing date: 2015-09-21
Publication date: 2020-03-20
Anticipated expiration: 2035-09-21
Also published as: DE102015116410A1; BR102015025017A2; MX361574B; MX2015013872A; RU2015140086A3; CN105459888A; RU2684998C2; RU2015140086A

Abstract

The invention discloses a vehicle lighting device. The illumination device includes a surface including a first photoluminescent pattern including a first absorption range and a second photoluminescent pattern including a second absorption range. The lighting device further comprises at least one light source configured to emit a first emission at a first wavelength. The first wavelength substantially corresponds to the first absorption range to produce a higher level of fluorescence from the first photoluminescence pattern than a level of fluorescence of the second photoluminescence pattern. In this way, the illumination device is operable to selectively illuminate the first and second photoluminescent patterns substantially independently.

Description

Photoluminescent vehicle graphics

Technical Field

The present invention relates generally to vehicle lighting systems, and more particularly to vehicle lighting systems using photoluminescent structures.

Background

The illumination caused by the photoluminescent material provides a unique and attractive visual experience. It is therefore desirable to include such photoluminescent materials in various portions of a vehicle to provide ambient and task lighting.

Disclosure of Invention

According to an aspect of the present invention, a vehicle lighting device is disclosed. The illumination device comprises a surface comprising a first photoluminescent pattern comprising a first absorption range and a second photoluminescent pattern comprising a second absorption range. The lighting device further comprises at least one light source configured to emit a first emission at a first wavelength. The first wavelength substantially corresponds to a first absorption range to produce a higher level of fluorescence from the first photoluminescence pattern than a level of fluorescence of the second photoluminescence pattern. In this way, the illumination device is operable to selectively illuminate the first and second photoluminescent patterns substantially independently.

In accordance with another aspect of the present invention, a vehicle lighting system is disclosed. The lighting system includes a panel corresponding to a surface of the vehicle and at least one light source configured to emit a first emission. The coating is disposed on a surface adjacent to the at least one light source. The coating includes at least one photoluminescent portion extending along the surface, wherein the first emission is directed toward the photoluminescent portion to cause the photoluminescent portion to emit a second emission.

In accordance with yet another aspect of the present invention, a vehicle lighting system is disclosed. The illumination system includes a first light source configured to emit a first emission and a first photoluminescent pattern including a first absorption range, the first photoluminescent pattern disposed on a surface. The illumination device further includes a second photoluminescent pattern disposed on the surface, the second photoluminescent pattern including a second absorption range. The first light source is directed toward at least a portion of each of the first and second photoluminescent patterns. The light source is configured to excite the first photoluminescent pattern such that the first photoluminescent pattern outputs a second emission in response to the first emission at a stronger fluorescence than the fluorescence of the second photoluminescent pattern.

These and other aspects, objects, and features of the present invention will be understood and appreciated by those skilled in the art upon studying the following specification, claims, and appended drawings.

Drawings

In the drawings:

FIG. 1 is a perspective view of a vehicle incorporating a lighting system configured to produce a movement effect;

FIG. 2A illustrates a photoluminescent structure present as a coating;

FIG. 2B illustrates a photoluminescent structure presented as discrete particles;

fig. 2C illustrates a plurality of photoluminescent structures that are present as discrete particles and that are incorporated into separate structures;

FIG. 3 illustrates an illumination system configured to convert a first emission of light into a second emission of light;

FIG. 4 illustrates an illumination system configured to convert first and second emissions of light into third and fourth emissions of light, respectively;

FIG. 5 is a graphical chart showing a plurality of Stokes shifts corresponding to transitions of first and second emissions of light to third and fourth emissions of light;

FIG. 6A is a detailed view of a first emission of light configured to illuminate a first photoluminescent portion of a vehicle;

FIG. 6B is a detailed view of a second emission of light configured to illuminate a second photoluminescent portion of the vehicle;

FIG. 6C is a detailed view of first and second emissions of light configured to illuminate first and second photoluminescent portions of a vehicle;

FIG. 7A is a detailed view of a first and second photoluminescent portion configured to illuminate a surface of a vehicle;

FIG. 7B is a detailed view of a first and second photoluminescent portion configured to illuminate a surface of a vehicle;

FIG. 8A is a side view of a vehicle including a lighting system operable to illuminate a surface of the vehicle from a recessed light source;

FIG. 8B is a side view of a vehicle including a lighting system showing a first photoluminescence pattern illuminated by a first light source;

FIG. 8C is a side view of a vehicle including a lighting system showing a second photoluminescence pattern illuminated by a second light source;

FIG. 8D is a side view of a vehicle incorporating a lighting system showing a plurality of photoluminescence graphics illuminated by at least one light source; and

fig. 9 is a side view of a vehicle incorporating a lighting system showing a first photoluminescent pattern and a second photoluminescent pattern illuminated by a plurality of light sources according to the invention.

Detailed Description

As required, detailed embodiments of the present invention are disclosed herein. However, it is to be understood that the disclosed embodiments are merely exemplary of the invention that may be embodied in various and alternative forms. The drawings are not necessarily to scale and some of the illustrations may be exaggerated or minimized to present a functional overview. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.

As used herein, the term "and/or" when used in a list of two or more items means that any one of the listed items can be used alone or any combination of two or more of the listed items can be used. For example, if a mixture is described as containing components A, B and/or C, the mixture can contain a alone, B alone, a combination of C, A and B alone, a combination of a and C, a combination of B and C, or a combination of A, B and C.

For clarity, the terms first, second, third, etc. as used herein may provide names referring to the figures. For example, in some embodiments, the first portion and the second portion may be referred to, and in some further embodiments, only the second portion may be referred to. Such designations may be used to illustrate exemplary arrangements and compositions, and should not be construed to refer to a particular number of elements or essential components of any particular embodiment of the invention unless explicitly stated otherwise. Thus, these designations should be considered to provide clarity with respect to the various possible embodiments of the invention, and these designations may be combined in various combinations and/or used individually to make clear references to various elements of the invention.

The following disclosure describes a vehicle lighting system configured to illuminate a first photoluminescent portion of at least one vehicle panel, the first photoluminescent portion having a first light absorption range. The first light source is configured to emit a first emission of light having a first wavelength, the first wavelength corresponding to a first luminescence absorption range. The first photoluminescent portion is configured to emit a second emission in response to receiving the first emission. The second emission has a second wavelength different from the first wavelength, the second wavelength being longer and more clearly visible to the human eye. In this configuration, the illumination system provides illumination of the first photoluminescent portion from the first light source.

In some embodiments, the illumination system further comprises a second light source and a second photoluminescent portion having a second luminescence absorption range. The second light source is configured to emit a third emission having a third wavelength corresponding to the second photoluminescent portion. The second photoluminescent portion is configured to emit a fourth emission in response to receiving the third emission. The lighting system is operable to produce a perceptible motion effect or animation by selectively illuminating the first and second light sources to produce second and fourth emissions from the first and second photoluminescent portions, respectively.

A motion effect or animation as referred to herein refers to a perceived visual effect caused at least in part by the persistence of a motion phenomenon. For example, the first photoluminescent portion and the second photoluminescent portion may selectively illuminate and emit a second emission and a fourth emission of light as the first and second light sources alternately emit a first emission and a third emission of light. By alternating between the second emission and the fourth emission of output light, the illumination system is operable to generate a motion effect corresponding to the spatial relationship between the first photoluminescent portion and the second photoluminescent portion. The motion effects may correspond to blinks (flicking), wiggling (waving), and/or animation sequences (animated sequences) configured to produce moving designs and/or graphics on the vehicle.

Referring to FIG. 1, a perspective view of a vehicle 10 is shown, the vehicle 10 including a lighting system 12 configured to produce a motion effect. The illumination system 12 includes at least one light source 14 configured to emit a first emission 16, the first emission 16 having a first wavelength. The illumination system 12 further includes at least one photoluminescent portion 18 configured to emit a second emission 20, the second emission 20 having a second wavelength. The second emission 20 causes at least one of the photoluminescent portions 18 to have ambient light having a color corresponding to one or more wavelengths corresponding to the second wavelength. The at least one photoluminescent portion 18 may include at least one photoluminescent structure that is excited in response to receiving the first emission 16 and converts the first wavelength to a second wavelength to illuminate the at least one photoluminescent portion 18.

The at least one photoluminescence portion 18 may correspond to a plurality of photoluminescence portions. Similarly, the at least one light source 14 may correspond to a plurality of light sources. In some embodiments, each of the plurality of light sources is configured to correspond to each of the photoluminescent portions to illuminate the respective photoluminescent portion. For example, the first light source 22 may correspond to the first photoluminescent portion 24. The first light source 22 may be configured to emit the first emission 16 such that the first photoluminescent portion 24 is excited and converts the first emission 16 into a second emission 20 having a second wavelength.

In some embodiments, the second light source 26 may be configured to emit a third emission 28 corresponding to the second photoluminescent portion 30. The second light source 26 may correspond to one of a plurality of light sources, shown in fig. 1 as at least one light source 14. The second photoluminescent portion 30 may correspond to one of a plurality of photoluminescent portions, shown in fig. 1 as at least one photoluminescent portion 18. In some embodiments, the second photoluminescent portion 30 may be configured to have a form or shape that complements the first photoluminescent portion 24, such as a shadow, a highlight, and/or any form configured to produce a blurring or motion effect that is offset relative to the first photoluminescent portion 24.

To produce a motion effect or highlight, the second photoluminescent portion 30 is configured to be excited and convert the third emission 28 into a fourth emission 32 having a fourth wavelength. In this manner, the present invention provides a lighting system 12, the lighting system 12 being operable to selectively illuminate the first and

second photoluminescence portions

24, 30 to create a motion animation effect. The second light source 26 and the second photoluminescent portion 30 may be disposed on the vehicle 10 similar to the at least one light source 14 and the at least one photoluminescent portion 18, respectively. Further description of the plurality of light sources and the photoluminescent portion is described herein with particular reference to fig. 6A-7B.

Referring to fig. 2A-2C, a photoluminescent structure 42 is generally shown, respectively in the form of a coating (e.g., a film) that can be applied to a vehicle fixture, a discrete particle that can be implanted within a vehicle fixture, and a plurality of discrete particles contained in a separate structure that can be applied to a vehicle fixture. The photoluminescent structure 42 may correspond to photoluminescent portions described herein, such as the first photoluminescent portion 24 and the second photoluminescent portion 30. At the most basic level, the photoluminescent structure 42 includes a energy conversion layer 44, and the energy conversion layer 44 may be provided as a single-layer or multi-layer structure, as shown by the dashed lines in fig. 2A and 2B.

The energy conversion layer 44 may include one or more photoluminescent materials having energy conversion elements selected from phosphorescent or fluorescent materials. The photoluminescent material may be configured to convert input electromagnetic radiation into output electromagnetic radiation that generally has a longer wavelength and exhibits a color that is not characteristic of the input electromagnetic radiation. The difference in wavelength between the input and output electromagnetic radiation is known as Stokes shift and serves as the primary driving mechanism for the energy conversion process (often referred to as down conversion) corresponding to the wavelength variation of the light. In various embodiments described herein, each wavelength of light (e.g., the first wavelength, etc.) corresponds to electromagnetic radiation utilized in the conversion process.

Each photoluminescent portion can contain at least one photoluminescent structure 42 that contains an energy conversion layer (e.g., conversion layer 44). The energy conversion layer 44 may be prepared by dispersing the photoluminescent material in the polymer matrix 50 using various methods to form a uniform mixture. Such a method may include preparing the energy conversion layer 44 from a formulation in a liquid carrier medium and applying the energy conversion layer 44 to a desired planar and/or non-planar substrate of a vehicle fixture. The energy conversion layer 44 coating can be deposited on the vehicle fastening device by painting (painting), screen printing, spraying, slot coating (slot coating), dip coating (dip coating), roller coating (roller coating) and bar coating (bar coating). Furthermore, the energy conversion layer 44 may be prepared by a method that does not use a liquid carrier medium.

For example, a solid solution (homogeneous mixture in the dry state) of one or more photoluminescent materials may be incorporated into the polymer matrix 50 to provide the energy conversion layer 44. The polymer matrix 50 may be formed by extrusion, injection molding, compression molding, calendaring, thermoforming, and the like. In examples where one or more energy conversion layers 44 are present as particles, a single layer or multiple layers of energy conversion layers 44 may be implanted into a vehicle fixture or panel. When the energy conversion layer 44 comprises a multi-layer formulation, each layer may be coated sequentially. In addition, the layers may be prepared separately and then laminated or embossed together to form an integral layer. The layers may also be coextruded to make a unitary multi-layer energy conversion structure.

Referring back to fig. 2A and 2B, the photoluminescent structure 42 may optionally include at least one stabilizing layer 46 to protect the photoluminescent material contained within the energy conversion layer 44 from photolytic and thermal degradation. The stabilization layer 46 may be configured as a separate layer that is optically coupled to and adhered to the energy conversion layer 44. The stabilization layer 46 may also be integrated with the energy conversion layer 44. The photoluminescent structure 42 may also optionally include a protective layer 48 or any layer or coating that is optically coupled and adhered to the stabilizing layer 46 to protect the photoluminescent structure 42 from physical and chemical damage resulting from environmental exposure.

The stabilization layer 46 and/or the protection layer 48 may be combined with the energy conversion layer 44 to form the integral photoluminescent structure 42 by sequential coating or printing of each layer, or by sequential lamination or stamping. Alternatively, several layers may be combined by sequential coating, lamination or embossing to form a substructure. The sub-structures are then laminated or stamped together to form the integral photoluminescent structure 42. Once formed, the photoluminescent structure 42 may be applied to selected vehicle fixtures and/or panels.

In some embodiments, the photoluminescent structure 42 may be incorporated into the vehicle fixture as one or more discrete multilayer particles, as shown in fig. 2C. Photoluminescent structure 42 may also be provided as one or more discrete multilayer particles dispersed in a polymer formulation, which is then applied as an adjoining structure in a vehicle fixture or panel. Additional information regarding the construction of photoluminescent structures utilizing at least one photoluminescent portion of a vehicle is disclosed in the application entitled "photolytically and environmentally stable multilayer structures for efficient electromagnetic energy conversion and sustained secondary emission" filed on day 31, 7, 31, 2012, by kinsley et al, U.S. patent No. 8,232,533, the entire disclosure of which is incorporated herein by reference.

Referring to fig. 3, the lighting system 12 is shown generally in accordance with a frontlit configuration 62, the frontlit configuration 62 converting the first emission 16 from the at least one light source 14 to the second emission 20. The first emission 16 comprises a first wavelength λ₁And the second emission 20 comprises a second wavelength lambda₂. The lighting system 12 may include a photoluminescent structure 42 in the form of a coating and applied to a substrate 64 of a vehicle fixture 66. The photoluminescent structure 42 may include an energy conversion layer 44, and in some embodiments the photoluminescent structure 42 may include a stabilization layer 46 and/or a protective layer 48. The first emission 16 is from a first wavelength λ in response to the at least one light source 14 being activated₁Converted to have at least a second wavelength lambda ₂20, respectively. The second emission 20 may include a plurality of wavelengths configured to emit a distinct white light from the vehicle fixture 66.

In various embodiments, the illumination system 12 comprises at least one energy conversion layer 44, the energy conversion layer 44 being configured for converting the first wavelength λ₁Is converted to have at least a second wavelength lambda ₂20, respectively. The at least one energy conversion layer 44 may be configured to produce various visible colors by using at least one of red, green, and blue light emitting photoluminescent materials dispersed in the polymer matrix 50. The red, green and blue light-emitting photoluminescent materials may be combined to produce a distinct white light from the second emission 20. Also, red, green and blue light emitting photoluminescent materials can be used in various ratios and combinations to control the color of the second emission 20.

Each photoluminescent material can vary in output intensity, output wavelength, and peak absorption wavelength based on the particular photochemical structure and combination of photochemical structures used in the energy conversion layer 44. The intensity of the second emission 20 can be varied by adjusting the wavelength of the first emission. In addition to or alternatively to the red, green and blue light-emitting photoluminescent materials, other photoluminescent materials may be used alone and in various combinations to produce the second emission 20 in various colors. In this manner, the lighting system 12 may be configured for various applications to provide a desired lighting color and effect for the vehicle 10.

The at least one light source 14 may refer to a plurality of light sources including a first light source 22 and a second light source 26. The at least one light source 14 may also be referred to as an excitation source and is operable to emit at least a first emission 16. The at least one light source 14 may comprise any form of light source, such as a halogen lighting device, a fluorescent lighting device, a Light Emitting Diode (LED), an Organic Light Emitting Diode (OLED), a Polymer Light Emitting Diode (PLED), a solid state lighting device, or any other form of lighting device configured to output the first emission 16.

Referring now to fig. 4, the lighting system 12 is shown in a configuration including a plurality of photo-luminescent portions 80, the photo-luminescent portions 80 including a first photo-luminescent portion 24 and a second photo-luminescent portion 30. The first photoluminescent portion 24 is configured to emit the second emission 20 in response to receiving the first emission 16 from the first light source 22. The second photoluminescent portion 30 is configured to emit a fourth emission 32 in response to receiving the third emission 28 from the second light source 26. Each of the plurality of photoluminescent portions 80 can be excited individually. For example, the second transmission 20 may be output while the fourth transmission 32 is disabled, and the fourth transmission 32 may be output while the second transmission 20 is disabled. Such selective activation of each photoluminescent portion 80 can be carried out by using photoluminescent materials having non-overlapping absorption ranges.

In some embodiments, the first emission 16 from the first light source 22 may be configured such that the first wavelength λ₁Corresponding to the first absorption range of the first photoluminescent portion 24. Third emission 28 from second light source 26 may be configured such that third wavelength λ₃Corresponding to the second absorption range of the second photoluminescent portion 30. The first absorption range may correspond to an absorption range of light emission that is substantially different from the second absorption range. In this configuration, the first light source 22 may selectively activate the first photoluminescent portion 24 via the first emission 16 in the first absorption range, and the second light source 26 may selectively activate the second photoluminescent portion 30 via the third emission 28 in the second absorption range.

Referring now to fig. 5, an exemplary illustration 84 of the transition of the first transmission 16 to the second transmission 20 and the third transmission 28 to the fourth transmission 32 is shown. The independent axes 86 in the diagram 84 show the absorption range in nanometers, which corresponds to the wavelength of light absorbed by the photoluminescent material and the corresponding

photoluminescent portions

24 and 30. The subordinate axis 88 shows the percentage of emitted fluorescence of the photoluminescent range as a function of the absorption of the emission. Each of the

emissions

20 and 32 from the

photoluminescent portions

24 and 30 is configured to output light at one or more wavelengths corresponding to the particular photoluminescent material implemented.

In this example, the illustration 84 shows a first absorption range 90 and a second absorption range 92 and each corresponding light emission (e.g., second emission 20 and fourth emission 32). The first absorption range 90 corresponds to wavelengths longer than the wavelengths of light of the second absorption range 92. In this way, the first photoluminescent portion 24 can be irradiated independently of the second photoluminescent portion 30. The absorption range and resulting emission can be configured by the particular photoluminescent material used in each of the

photoluminescent portions

24 and 30. Various combinations of photoluminescent materials can provide a wide range of color and wavelength combinations to produce motion effects.

The term absorption range as used herein defines the range of wavelengths over which the photoluminescent moiety or structure is excited and the photoluminescent material is excited. The photoluminescent portion emits an emission of at least one wavelength of light in response to the excitation, the wavelength being at least partially outside the absorption range. In various embodiments, the absorption range of the photoluminescent materials described herein can vary. Further, the emission of light in the form of fluorescence emission may be selected based on the material properties of the photoluminescent structures described herein.

Reference is now made to fig. 4 and 5, which show examples of specific combinations of photoluminescent materials and light sources. The first absorption range 90 may correspond to a wavelength range within the blue and/or near Ultraviolet (UV) light range having a wavelength of approximately 390-450 nanometers. The second absorption range 92 may correspond to a substantially non-overlapping wavelength range in the UV and/or blue light range having a wavelength of about 250-410 nanometers. The first emission 16 may be approximately 470 nanometers, with the first emission 16 configured to cause the first photoluminescent portion 24 to output the second emission 20 at approximately 525 nanometers. The third emission 28 may be approximately 370 nanometers, with the third emission 28 configured to cause the second photoluminescent portion 30 to output a fourth emission 32 of approximately 645 nanometers. In this manner, the second emission 20 and the fourth emission 32 may be selectively energized by each of the

light sources

22, 26 to independently output substantially green light and substantially orange-red light, respectively.

In general, the photoluminescent materials of the first and

second photoluminescent portions

24, 30 can be combined in various proportions, types, layers, etc. to produce various colors for each luminescent emission. Although described herein as specific materials and structures of photoluminescent materials, various materials can be used without departing from the spirit of the present invention. In some embodiments, the first photoluminescent portion 24 is configured to have a first absorption range 90 that is substantially greater than a second absorption range 92. Furthermore, a second wavelength λ of the second emission 20₂May be configured to output a fourth wavelength λ substantially greater than the fourth emission 32₄Shorter wavelengths or wavelength ranges.

In some embodiments, the first photoluminescent portion 24 may comprise an organic fluorescent dye configured to convert the first emission 16 to the second emission 20. For example, the first photoluminescent material may comprise photoluminescent structures of rylene dyes (rylene dye), xanthene (xanthene), porphyrin (porphyrin), phthalocyanine (phthalocyanine), or other materials suitable for a particular stokes shift defined by absorption range and emitted fluorescence. The first photoluminescent portion 24 and corresponding materials may be configured to have a shorter stokes shift than the second photoluminescent portion. In this manner, each of the

photoluminescent portions

24 and 30 can be independently illuminated by the

light sources

22 and 26 to output a different color of light.

The second photoluminescent portion 30 can include a photoluminescent structure 42, the photoluminescent structure 42 configured to produce a longer stokes shift than the first photoluminescent portion 24. The second photoluminescent portion may comprise an organic or inorganic material configured to have a second absorption range 92 and a desired output wavelength or color. In an exemplary embodiment, the photoluminescent structure 42 of the second photoluminescent portion 30 may be at least one inorganic luminescent material selected from the group of phosphors. The phosphor may more specifically be from the group of cerium (Ce) -doped garnets, e.g. YAG (yttrium aluminum garnet): Ce. This configuration can provide a second stokes shift of the second photoluminescent portion 30 that is longer than the first stokes shift of the first photoluminescent portion 24.

The first emission 16 and the third emission 28 from the light source are shown as having wavelengths in the blue spectral color range and shorter wavelengths (UV wavelengths). Such wavelengths can be used as an excitation source for photoluminescent moieties and provide a nearly imperceptible illumination source because they have limited perceptual acuity in the visible spectrum of the human eye. By using shorter wavelength excitation sources (e.g., first emission 16 and third emission 28), illumination system 12 may produce a visual effect of light originating from

photoluminescent portions

24 and 30. Also, in this configuration, light is emitted from the photoluminescent structures 42 (e.g., the first and second photoluminescent portions 24, 30) at multiple locations of the vehicle 10 where adding conventional light sources requiring electrical connections is impractical or costly.

To achieve the various colors and combinations of photoluminescent materials described herein, the illumination system 12 may use any form of photoluminescent material, such as phosphorescent materials, organic and inorganic dyes, and the like. Additional information on the manufacture and utilization of photoluminescent materials to achieve various emissions refer to the application filed on 26/6/2012, invented by botts (Bortz) et al, U.S. patent No. 8,207,511 entitled "photoluminescent fibers, compositions, and fabrics made with photoluminescent fibers and compositions," and the application filed on 21/8/2012, invented by argalawal (Agrawal) et al, U.S. patent No. 8,247,761 entitled "photoluminescent indicia with functional covering layer," and the application filed on 27/8/2013, invented by Kingsley (Kingsley) et al, U.S. patent No. 8,519,359B2 entitled "photolytically and environmentally stable multilayer structure for efficient electromagnetic energy conversion and sustained secondary emission," and the application filed on 4/3/2014, invented by Kingsley (Kingsley) et al, filed on 3/4/2014, Us patent No. 8,664,624B2 entitled "illumination delivery system for producing sustained secondary emission", and applications filed on 7/19/2012, invented by argravoll (Agrawal) et al, us patent publication No. 2012/0183677 entitled "photoluminescent composition, method of making a photoluminescent composition, and novel uses thereof", and applications filed on 3/6/2014, invented by Kingsley (Kingsley), et al, us patent publication No. 2014/0065442a1 entitled "photoluminescent object", and applications filed on 4/17/2014, invented by argravoll (Agrawal), et al, us patent publication No. 2014/0103258a1 entitled "chromium luminescent composition and textile", all of which are incorporated herein by reference in their entirety.

Reference is now made to fig. 6A-6C, which illustrate detailed views of the first and

second photoluminescent portions

24 and 30, showing the motion effect and/or combined intense illumination in accordance with the present invention. As described herein, the illumination system 12 is operable to selectively illuminate the first photoluminescent portion 24 by emitting the first emission 16 from the first light source 22. The illumination system 12 is further operable to selectively illuminate the second photoluminescent portion 30 by emitting a third emission 28 from the second light source 26. Each of the

light sources

22 and 26 may be selectively activated by one or more lighting controllers configured to control the first and second

light sources

22 and 26.

Light sources

22 and 26 may be activated in combination or intermittently to produce visual effects such as blinking, wobbling, animated movement, etc. As shown in FIG. 6C, the combination of the second emission 20 and the fourth emission 32 provides a wavelength corresponding to the second wavelength λ when activated in combination₂Of the first color 100 and corresponding to the fourth wavelength lambda₄Is output simultaneously with the second color 102 of light. As shown in fig. 5, the second wavelength λ₂And a fourth wavelength λ₄May each correspond to one or more wavelengths that are combined to form an average or perceived color of the light. Each of the first color 100 and the second color 102 may correspond to a different perceptible color or hue of a color that may be selectively output to produce a motion effect.

Referring now to fig. 7A and 7B, a detailed view of the first photo-luminescent portion 112 and the second photo-luminescent portion 114 is shown showing a fading or shifting lighting effect configured to produce multiple colors of light. In this example, each of the photoluminescent portions 112 and 114 may be similar to the first and

second photoluminescent portions

24 and 30, with the first photoluminescent portion illuminated primarily in response to the first emission 16 from the first light source 22 and the second photoluminescent portion illuminated primarily in response to the third emission 28 from the second light source 26. In such a configuration, the first and second

light sources

22, 26 may be configured to produce moving, fading, and/or pulsing illumination effects by controlling the intensity and directional focusing of the first and second

light sources

22, 26.

Each of the illustrated photoluminescent portions 112 and 114 form a selectively illuminated portion 116 that corresponds to a coating applied to a surface 118 of the vehicle 10 and/or to at least one photoluminescent material applied to the surface 118 in a spray or coating application. The selectively illuminated portion 116 is shown as a simple trapezoid for clarity, but the selectively illuminated portion 116 may correspond to any shape, design, feature, and/or combination thereof. Also, the first photoluminescent portion 112 may correspond to a first shape or design, and the second photoluminescent portion 114 may correspond to a second shape or design, each having a different range and/or ratio. The first photoluminescent portion 112 may also partially or completely overlap with the second photoluminescent portion 114 within the selectively illuminated portion 116.

As shown in fig. 7A and 7B, the first photoluminescent portion 112 is shown as a line of a first pattern extending diagonally downward from the upper left boundary of the selectively illuminated portion 116 to the lower right boundary of the selectively illuminated portion 116. The second photoluminescent portion 114 is shown as a line of a second pattern that extends diagonally upward from the lower left boundary of the selectively illuminated portion 116 to the upper right boundary of the selectively illuminated portion 116. For clarity, each of the photoluminescent portions 112 and 114 are shown as being coextensive to the boundary of the selectively illuminated portion 116. However, each of the photoluminescent portions may be applied to any portion of the surface 118 or any other surface of the vehicle 10 to which the

light sources

22 and 26 may be directed.

Referring to fig. 7A, the second light source 26 is shown as a second plurality of illumination devices 120. The illumination system 12 is operable to generate a second gradient of light or a second pattern of light 122a emitted as third emissions 28, as indicated by the length of each arrow representing the third emissions 28. Corresponding to the pattern of light 122a, an irradiated region 124a of the second photoluminescent portion 114 can be excited to emit fourth emissions 126. The first light source 22 comprises a first plurality of illumination devices 130 and is also operable to generate a first gradient of light or first pattern of light 132a emitted as first emissions 16, as indicated by the length of each arrow representing the first emissions 16. Corresponding to the pattern 132a of light, the illuminated area 134a of the first photoluminescent portion 112 can be excited to emit a second emission 136. In this configuration, each of the

light sources

22 and 26 and their respective illumination devices 130 and 120 are operable to selectively illuminate various patterns and portions of each of the photoluminescent portions 112 and 114.

Referring to fig. 7B, as another example, illumination system 12 is operable to generate a first gradient of light or first pattern of light 132B emitted as first emissions 16, as shown by the length of each arrow representing first emissions 16. Corresponding to the pattern 132b of light, the illuminated area 134b of the first photoluminescent portion 112 can be excited to emit a second emission 136. The second light source 26 includes a second plurality of lighting devices 120 and is also operable to generate a second gradient of light or a second pattern of light 122b emitted as a third emission 28. Corresponding to the pattern of light 122b, the illuminated area 124b of the second photoluminescent portion 114 can be excited to emit a fourth emission 126.

The various illumination emissions and corresponding patterns emitted from the first plurality of illumination devices 130 and the second plurality of illumination devices 120 may be configured to illuminate different ranges, portions, and patterns of the photoluminescence emissions from the surface 118. The photoluminescent materials of the first and second photoluminescent portions 112 and 114 are excited by each of the illumination devices 130 and 120 to selectively produce photoluminescent emissions. Various patterns of light emitted from the photo-luminescent portions 130 and 120 may be controlled by the illumination intensity and selective illumination of each of the illumination devices 130 and 120. In this configuration, the lighting system 12 is operable to generate various patterns and lighting effects of light on the surface 118 of the vehicle 10. In some embodiments, the lighting system 12 is operable to generate evanescent, moving, pulsing, and various additional lighting patterns by selectively activating the second emission 136 and the fourth emission 126 in response to activation of the first plurality of lighting devices 130 and the second plurality of lighting devices 120.

As described herein, the first and second photoluminescent portions 112 and 114 may correspond to a first color and a second color, respectively. Each of the photoluminescent portions 112 and 114 may also be configured to have a first absorption range 90 and a second absorption range 92 as described with reference to fig. 5. In general, the first and second absorption ranges may correspond to substantially different ranges or partially overlapping ranges of wavelengths of light emitted from the first and second

light sources

22, 26. In examples where the first and second absorption ranges correspond to substantially different wavelengths of light, the first and second photoluminescent portions 112 and 114 may be independently excited by their respective

light sources

22 and 26. In an example where the first absorption range and the second absorption range partially overlap, the first photoluminescent portion 112 and the second photoluminescent portion 114 may be partially excited by each of the

light sources

22 and 26 to vary the intensity and produce a mixing effect of the first photoluminescent portion 112 and the second photoluminescent portion 114.

For example, the first light source 22 may illuminate the first photoluminescent portion 112 at an efficiency of about ninety percent and also illuminate the second photoluminescent portion 114 at an efficiency of about forty percent. The efficiency of each of the

light sources

22 and 26 used to illuminate the photoluminescent portions 112 and 114 can be controlled by selecting the light source that emits the desired wavelength of light. The desired wavelength of light may correspond to different portions of the absorption range of a particular photoluminescent material or combination of photoluminescent materials. In this configuration, the first light source 22 is operable to mix a first color emitted from the first photoluminescent portion 112 with a second color emitted from the second photoluminescent portion 114. Similarly, the second light source 26 is operable to mix the second color emitted from the second photoluminescent portion 114 with the first color emitted from the first photoluminescent portion 112. By varying the intensity from each of the plurality of lighting devices 130 and 120, the lighting system is operable to produce various colors of light, patterns of light, motion effects, and combinations thereof.

In some embodiments, the first photoluminescent portion 112 can be further configured to emit multiple colors of light from the first plurality of colored portions 140. For example, the first photoluminescent portion 112 can include a first colored portion 142, a second colored portion 144, and a third colored portion 146. Each of the

colored portions

142, 144, 146 can be configured to be excited at various efficiency levels in response to the first emission 16 from the first light source 22. Also, the second photoluminescent portion 114 can be configured to emit multiple colors of light from the second plurality of colored portions 150. The second photoluminescent portion 114 can include a fourth colored portion 152, a fifth colored portion 154, and a sixth colored portion 156. Each of the

colored portions

152, 154, 156 is configured to be excited at various efficiency levels in response to the second emission 28 from the second light source 26.

Although the

colored portions

142, 144, 146, 152, 154, and 156 are shown as overlapping portions of the first and second photoluminescent portions 112 and 114, each colored portion may be applied to different portions and/or partially overlapping portions of the surface 118. In this manner, the lighting system 12 provides illumination of various patterns, colors, designs, lighting effects, and motion effects. By controlling each of the plurality of lighting devices 130, 120, the lighting system 12 is operable to control the intensity of each of the

colored portions

142, 144, 146, 152, 154, and 156 at various levels and intensities. As shown in the various examples and configurations described herein, the lighting system provides a flexible lighting system operable to provide various lighting effects. The lighting system 12 also has the additional benefit of being operable to produce a variety of lighting effects while maintaining low implementation costs.

Referring now to fig. 8A, 8B, 8C, and 8D, the lighting system 178 may be configured to illuminate a surface 180 of a vehicle 182. The lighting device 178 may include various components and elements as described with reference to the lighting system 12. As such, the same reference numbers may be used to describe various elements of the lighting system 178. The illumination system 178 may be configured to illuminate the first graphic 184 and the second graphic 186. Each of the first graphic 184 and the second graphic 186 may be configured to be selectively illuminated in response to receiving emissions from at least one light source 188. The lighting system 178 may also be configured to interact with ambient lighting conditions (day, night, artificial lighting, etc.) to provide various visual effects that are displayed by selectively illuminating the first graphic 184 and the second graphic 186.

The term graphic as used herein may refer to any form of characters, logos, indicia, shapes, and any other form of design. As such, each of the first graphic, the second graphic, and any other graphics, designs, logos, and/or characters may be interchanged, combined, and/or blended to achieve a desired appearance of the first graphic 184 and the second graphic 186. For example, the first graphic 184 is displayed as a logo or character set and the second graphic is displayed as a shape. However, in various embodiments, the first graphic 184 and the second graphic 186 may correspond to any combination of characters, designs, logos, shapes, and/or markings disposed on the surface of the vehicle.

The at least one light source 188 may be disposed on the surface 180 of the vehicle 182, and in some embodiments, the at least one light source 188 may be hidden behind a panel or fascia 190. In this configuration, the lighting system 12 is operable to project light from at least one light source 188 that may cause the first graphic 184 and the second graphic 186 to be illuminated. In some embodiments, the at least one light source 188 may include the first light source 22 and the second light source 26. The first and second

light sources

22, 26 may each be configured as an array of emitters that extend longitudinally along the surface 180 of the vehicle 182. Similar to the lighting system 12, the first light source 22 may be configured to emit a first emission 16, and the second light source 26 may be configured to emit a third emission 28. For clarity, the first light source 22 is denoted only by reference numeral 22 in fig. 8B and 9, and the second light source 26 is denoted only by reference numeral 26 in fig. 8C and 9. Reference numerals corresponding to the first emission 16 and the second emission 28 may also be represented in fig. 8B and 9, and fig. 8C and 9, respectively.

Fig. 8A shows the lighting system 178 in a first state 190, the first state 190 corresponding to the first and second

light sources

22, 26 being inactivated. As shown, fig. 8A may show the appearance of surface 180 in daytime or nighttime lighting conditions. The surface 180 of the vehicle 182 is shown having a contoured or textured appearance in the form of a light-blocking layer 192, the light-blocking layer 192 corresponding to an area that can be illuminated by the at least one light source 188. The surface 180 may also correspond to an area of the vehicle 182 in which the first graphic 184 and the second graphic 186 may be incorporated. In some embodiments, surface 180 may be painted and/or coated with a finish and/or paint configured to provide a textured appearance 192.

In some embodiments, light-shielding layer 192 may be used to attenuate and hide the emission of light corresponding to first graphic 184 and second graphic 186 produced by ambient lighting conditions. For example, the first graphic 184 and the second graphic 186 may contain at least one photoluminescent material that may be excited in response to receiving at least one wavelength of light from an ambient illumination source, such as the sun. Thus, the first graphic 184 and the second graphic 186 may be at least partially visible when the first light source 22 and the second light source 26 are not activated. By applying light-shielding layer 192 to surface 180, first graphic 184 and second graphic 186 may be substantially hidden even when exposed to ambient lighting conditions. In such embodiments, first and second

light sources

22, 26 may correspond to high power light sources, such as high power LEDs, operable to emit sufficient light energy to illuminate first graphic 184 and/or second graphic 186 when vehicle 182 is exposed to ambient lighting conditions.

In some embodiments, the matte layer 192, which combines a molded and textured appearance, may be applied to the entire vehicle 182 to provide a substantially uniform painted appearance. Similarly, the finish of the vehicle 182 may be configured similar to the opaque layer 192. The matte layer 192 may also be configured to present spray features, such as racing stripes. In this manner, the first graphic 184 and the second graphic 186 may be hidden in various ways when the surface 180 is exposed to ambient lighting conditions.

Although light-shielding layer 192 is described as being used to reduce and/or hide first graphic 184 and second graphic 186 when exposed to ambient lighting conditions, in some embodiments, light-shielding layer 192 may not be used. The brightness of the first graphic 184 and the second graphic 186 in response to ambient lighting conditions may be highly dependent on the combination of the finish colors of the vehicle 182, the concentration and/or intensity of the photoluminescent materials used in the

graphics

184 and 186, and the color or colors emitted by the photoluminescent materials used in the

graphics

184 and 186. For example, sunlight may cause each of the first graphic 184 and the second graphic 186 to illuminate by providing an excitation emission similar to the first and/or

third emissions

16 and 28. However, if the concentration and/or intensity of the photoluminescent material used to produce the emission from the first graphic 184 and the second graphic 186 is limited, the broad spectrum of sunlight may partially or fully clear and/or hide any substantially visible evidence that the first graphic 184 and the second graphic 186 are illuminated. As such, light-shielding layer 192 may be used in some embodiments, and light-shielding layer 192 may not be needed in other embodiments.

Referring now to fig. 8B, 8C, and 8D, the lighting system 178 is shown in a second state 194, a third state 196, and a fourth state 198, respectively. The exemplary appearance created by surface 180 as shown in fig. 8B, 8C, and 8D may correspond to an ambient lighting condition that does not include the first and third wavelengths corresponding to first emission 16 and third emission 28. That is, the lighting condition may not correspond to one or more excitation emissions configured to excite a photoluminescent material corresponding to the first graphic 184 and the second graphic 186. For example, the ambient lighting condition may correspond to a night lighting condition or an artificial lighting condition, such as a lighting condition of a vehicle display room.

Further, fig. 8B, 8C, and 8D depict a less pronounced and lighter textured light shielding layer 192. This depiction of light-shielding layer 192 may provide an exemplary illustration of an embodiment of illumination system 178 that employs light-shielding layer 192. The less pronounced and lighter texture of light-shielding layer 192 may be used for display during artificial and night lighting conditions, and the contrast of light-shielding layer 192 and other surfaces of vehicle 182 may be less pronounced. To reiterate, in some embodiments of the lighting system 178, the matte layer 192 may not be incorporated and/or blended to match the appearance of other surfaces of the vehicle 182.

Fig. 8B shows the illumination system 178 with the first light source 22 activated such that the first emission 16 is emitted from the corresponding first array of emitters 202 toward the surface 180. In such a configuration, the second light source 26 may be inactive. The first photoluminescent portion 204 corresponding to the first pattern 184 can be excited and emit a second emission 206 in response to receiving the first emission 16. In this configuration, the first photoluminescent portion 204 of the first pattern 184 can be illuminated to a substantially higher illumination or brightness level than the illumination or brightness level of the second pattern 186. In response to receiving the first emission 16, the higher illumination level of the first graphic 184 relative to the second graphic 186 may be attributed to the first photoluminescent portion 204 having the first absorption range 90.

Referring to fig. 8C, an illumination system 178 with a second light source 26 activated to cause third emissions 28 to be emitted from a corresponding second array 208 of emitters toward a surface 180 is shown. In such a configuration, the first light source 22 may be inactive. A second photoluminescent portion 210 corresponding to the second pattern 186 can be excited and emit a fourth emission 212 in response to receiving the third emission 28. The second photoluminescent portion 210 of the second pattern 186 may be illuminated to a substantially higher illumination level than the illumination level of the first pattern 184 in response to receiving the third emission 28. As such, the illumination system 178 is operable to selectively illuminate the first photoluminescence portion 204 substantially independently of the second photoluminescence portion 210.

As described herein, the first and second

photoluminescent portions

204 and 210 may correspond to a first color and a second color, respectively. Each of the

photoluminescent portions

204 and 210 may also be configured to have a first absorption range 90 and a second absorption range 92, as described with reference to fig. 5. In general, the first and second absorption ranges may correspond to substantially different ranges or partially overlapping ranges of wavelengths of light substantially emitted from the first and second

light sources

22 and 26, respectively. In examples where the first and second absorption ranges correspond to substantially different wavelengths of light, the first photoluminescent portion 204 and the second photoluminescent portion 210 may be independently excited by their respective

light sources

22 and 26.

In an example where the first absorption range and the second absorption range partially overlap, the first photoluminescent portion 204 and the second photoluminescent portion 210 may be partially excited by each of the

light sources

22 and 26. For example, the first wavelength of the first emission 16 may illuminate the second photoluminescent portion 210 at a lower intensity or brightness than the intensity or brightness of the third wavelength of the third emission 28. Similarly, the third wavelength of the third emission 28 may illuminate the first photoluminescent portion 204 at a lower intensity or brightness than the intensity or brightness of the first wavelength of the first emission 16. In such a configuration, each of the

light sources

22 and 26 may be configured to partially illuminate each of the

photoluminescent portions

204 and 210 at different intensities to illuminate each of the

patterns

184 and 186 in various combinations.

Referring to fig. 8D, an illumination system 178 is shown with both the first and second

light sources

22 and 26 activated. In this configuration, both first emission 16 and third emission 28 may emit toward surface 180. Both

photoluminescent portions

204 and 210 may be excited in response to receiving these

excitation emissions

16 and 28 and emit second and

fourth emissions

206 and 212, respectively. In this manner, the illumination system 178 is operable to selectively illuminate both the first photoluminescence portion 204 and the second photoluminescence portion 210.

In some implementations, the lighting system 178 can be configured to selectively illuminate each light emitter in the first array of emitters 202 and/or the second array of emitters 208. Referring to fig. 9, which shows the illumination device 178, the illumination device 178 illuminates a portion of the first graphic 184 by selectively activating a first selection of the emitters 222 of the first array 202 of emitters corresponding to the first light source 22. A portion of the second pattern 186 may also be illuminated by a second selection of emitters 224 that selectively activate the second array 208 of emitters corresponding to the second light source 26. In this configuration, the lighting device 178 may be operable to produce various visual effects by illuminating various combinations of emitters to illuminate portions of the first graphic 184 and/or the second graphic 186.

As described herein, selection of emitters (e.g., 222 and 224) may correspond to one or more adjacent or non-adjacent emitters of each of the emitter arrays 202 and 208. Some examples of visual effects that may be produced by the lighting system 178 may include sequentially or randomly activating each emitter of each of the emitter arrays 202 and 208, one or more emitter strobes, and/or various selections of blinking emitters. In addition, each emitter may vary in intensity to vary the intensity of first emission 22 and/or third emission 28. In this manner, the lighting device 178 is operable to produce a mixing effect of the second and

fourth emissions

206, 212 from the first and second

photoluminescent portions

204, 210, respectively.

For example, the first light source 22 may be activated at a first intensity, which may be about 50% of the total first intensity. In response, the first photoluminescent portion 204 may illuminate the first pattern 184 at about 50% of the maximum intensity of the second emission 206. Further, the second light source 26 may be activated at a second intensity, which may be about 10% of the total second intensity. In response, the second photoluminescent portion 210 can illuminate the second pattern 186 at about 10% of the maximum intensity of the fourth emission 212. In this manner, the illumination system 178 may be operable to illuminate the first graphic 184 and the second graphic at various intensities to adjust, mix, and/or project illumination in various combinations of the second emission 206 and/or the fourth emission 212. The lighting device is operable to adjust the intensity of each emitter of the

light sources

22 and 26 by varying the magnitude and/or duty cycle of the voltage/current supplied to each individual emitter of the

light sources

22 and 26 or the first and second arrays of emitters 202 and 208. In this manner, the illumination system 178 is operable to adjust the brightness or intensity level of the light emitted as the first emission 16 and the third emission 28.

In some embodiments, the lighting system 178 may be further operable to selectively activate the

light sources

22 and 26 to illuminate the first graphic and/or the second graphic at various intensities, patterns, and sequences in response to at least one vehicle condition. The lighting controller of the lighting system may communicate with the vehicle control module so that the lighting controller may control the

light sources

22 and 26 in response to signals identifying the vehicle status received from the vehicle control module. The lighting controller may contain one or more circuits and/or processors operable to control the

light sources

22 and 26 in response to receiving a signal from a vehicle controller configured to identify a state of the vehicle 182.

For example, the lighting controller may be operable to control the intensity or illumination level of

light sources

22 and 26 in response to ambient light conditions, presence detection, or any form of sensing interface. The lighting controller may also selectively activate

light sources

22 and 26 in response to an ignition event, lock, unlock drive, gear selection, emergency brake drive, vehicle speed, braking, steering signal, etc. In some embodiments, the lighting system 178 may also be configured to selectively illuminate the

light sources

22 and 26 in response to the presence or proximity detection of a car key or key fob and/or a signal from a key fob device.

The present disclosure provides a lighting system 178, the lighting system 178 configured to output light from a plurality of photoluminescent portions, which may correspond to various symbols and/or graphics on a surface of a vehicle. Various embodiments provide a plurality of photoluminescent materials that can be selectively activated in response to activation of a plurality of light sources to produce various lighting effects. The system 178 provides various benefits including creating visual effects for improving vehicle appearance, adding value, and the system 178 provides various safety benefits by improving visibility.

It is to be understood that variations and modifications can be made on the aforementioned structure without departing from the concepts of the present invention, and further it is to be understood that such concepts are intended to be covered by the following claims unless these claims by their language expressly state otherwise.

Claims

1. A vehicle lighting device, comprising:

a surface to the side of the vehicle comprising a first photoluminescent graphic and a second photoluminescent graphic, the first photoluminescent graphic comprising a first absorption range and the second photoluminescent graphic comprising a second absorption range; and

at least one light source configured to emit a first emission at a first wavelength, wherein the first wavelength substantially corresponds to the first absorption range to produce a higher level of fluorescence from the first photoluminescence pattern than a level of fluorescence of the second photoluminescence pattern, the first photoluminescence pattern and the second photoluminescence pattern combining to provide a motion effect.

2. The illumination device of claim 1, wherein the first photoluminescent pattern is configured to emit light of a first color and the second photoluminescent pattern is configured to emit light of a second color.

3. The lighting device of claim 1, wherein the at least one light source corresponds to a first light source and a second light source, the first light source configured to emit the first emission.

4. The illumination device of claim 3, wherein the second light source is configured to emit a third emission at a second wavelength, the second wavelength substantially corresponding to the second absorption range.

5. The illumination device of claim 4, wherein the second photoluminescent pattern is configured to emit a fourth emission in response to receiving the third emission.

6. The illumination device of claim 4, further comprising:

a controller in communication with the first and second light sources, wherein the controller is configured to selectively illuminate each of the first and second light sources.

7. The illumination device of claim 6, wherein the controller is configured to control the first emission and the third emission such that a portion of the first photoluminescent pattern is selectively illuminated substantially independently of illumination of the second photoluminescent pattern.

8. A vehicle lighting system, comprising:

a panel corresponding to a surface on a side of the vehicle;

at least one light source configured to emit a first emission; and

a coating disposed on the surface adjacent the at least one light source, the coating including at least one photoluminescent portion extending along the surface, wherein the first emission is directed toward the photoluminescent portion to cause the photoluminescent portion to emit a second emission, wherein the at least one photoluminescent portion corresponds to a first photoluminescent pattern and a second photoluminescent pattern that combine to provide a motion effect.

9. The lighting system of claim 8, wherein the panel corresponds to a fascia trim disposed on a vehicle panel.

10. The lighting system of claim 8, wherein the first photoluminescent pattern comprises a first absorption range and the second photoluminescent pattern comprises a second absorption range, the second absorption range being at least partially outside the first absorption range.

11. The lighting system of claim 10, wherein the at least one light source corresponds to a first light source configured to emit the first emission and a second light source configured to emit a third emission.

12. The lighting system of claim 11, wherein the first emission substantially corresponds to a peak brightness of the first absorption range and the third emission substantially corresponds to a peak brightness of the second absorption range.

13. The lighting system of claim 12, wherein the lighting system is configured to selectively illuminate at least a portion of the first photoluminescent pattern independently of the second photoluminescent pattern.

14. A vehicle lighting system, comprising:

a first light source configured to emit a first emission;

a first photoluminescent pattern comprising a first absorption range disposed on a surface lateral to the vehicle; and

a second photoluminescent pattern comprising a second absorption range disposed on the surface, wherein the first light source faces at least a portion of each of the photoluminescent patterns and is configured to excite the first photoluminescent pattern to cause the first photoluminescent pattern to output a second emission in response to the first emission that is at a stronger fluorescence than that of the second photoluminescent pattern, the first and second photoluminescent patterns combining to provide a motion effect.

15. The lighting system of claim 14, further comprising a second light source configured to output a third emission configured to excite the second photoluminescent pattern to cause the second photoluminescent pattern to output a fourth emission in stronger fluorescent light relative to fluorescent light of the first photoluminescent pattern in response to the third emission.

16. The lighting system of claim 15, wherein the first light source includes a first plurality of emitters configured to output the first emissions at a first wavelength, the second light source includes a second plurality of emitters configured to output the third emissions at a second wavelength, the second wavelength different from the first wavelength.

17. The lighting system of claim 16, further comprising a controller operable to selectively activate each of the first and second pluralities of emitters, thereby selectively exciting portions of the first and second photoluminescent patterns.

18. The lighting system of claim 17, wherein the first and second light sources are distributed along the surface of the vehicle and are concealed by a fascia.

19. The lighting system of claim 17, wherein the controller is operable to selectively activate each of the first and second plurality of emitters, thereby creating at least one of a lighting pattern and a movement effect.