CN112558389A - OLED-based projection system - Google Patents
OLED-based projection system Download PDFInfo
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- CN112558389A CN112558389A CN202011237675.XA CN202011237675A CN112558389A CN 112558389 A CN112558389 A CN 112558389A CN 202011237675 A CN202011237675 A CN 202011237675A CN 112558389 A CN112558389 A CN 112558389A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/142—Adjusting of projection optics
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention is suitable for the technical field of projection systems, and provides an OLED-based projection system, which comprises: at least two OLED display panels for generating self-emitting light sources and projecting the combined light sources; the lens group is arranged on a light path of a light source emitted by the OLED display panel, and projects the light source emitted by the OLED display panel onto a projection area for system imaging; the multiple OLED display panels display alternately, so that the limitation of the display frequency of a single OLED can be solved, and the projection speed of the system is increased; compared with the traditional projector, the optical structure can be greatly simplified by adopting the OLED display panel, and the system structure is greatly simplified without adding a light homogenizing device and the like; the OLED display panel can be used as a self-luminous light source, so that the energy utilization rate is high, and the power consumption is low. The invention can improve the utilization rate of the light source, has simple structure, improves the projection power and the projection speed, and has better use effect.
Description
Technical Field
The invention belongs to the technical field of projection systems, and particularly relates to an OLED-based projection system.
Background
An OLED (organic light-Emitting Diode), also called an organic electroluminescent Display, an organic light-Emitting semiconductor (OLED). The OLED is a current-type organic light emitting device, and emits light by injection and recombination of carriers, and the intensity of light emission is proportional to the injected current. Under the action of an electric field, holes generated by an anode and electrons generated by a cathode move, are respectively injected into a hole transport layer and an electron transport layer, and migrate to a light emitting layer. When the two meet at the light emitting layer, energy excitons are generated, thereby exciting the light emitting molecules to finally generate visible light.
Conventional projectors usually require a white light source or a plurality of monochromatic light sources as a backlight source, and the white light source or the plurality of monochromatic light sources illuminate devices generating transmission or reflection projection patterns, such as a DMD, polarized lenses of three primary colors, liquid crystals, and the like, and the generated patterns are projected through a series of lenses to form a projection picture. The structure is complex, the utilization rate of the light source is low, and an additional light source is needed.
Disclosure of Invention
The invention provides a projection system based on an OLED (organic light emitting diode), aiming at solving the problems of poor projection effect, complex structure and high energy consumption.
The invention is thus realized, an OLED-based projection system comprising:
at least two OLED display panels for generating self-emitting light sources and projecting the combined light sources;
and the lens group is arranged on a light path of a light source emitted by the OLED display panel, and projects the light source emitted by the OLED display panel onto a projection area for system imaging.
Still further, the OLED display panel includes: the first OLED display panel is arranged on one side of the lens group, the second OLED display panel and the third OLED display panel are oppositely arranged on the upper end and the lower end of the lens group, and the lens group combines light sources emitted by the first OLED display panel, the second OLED display panel and the third OLED display panel and then projects the light sources onto the projection area.
Furthermore, the OLED display panel is in a planar or curved structure.
Further, the viewing angle width of the OLED display panel is more than 170 degrees.
Further, the display area of the OLED display panel is provided with one or more light-emitting blocks.
Further, the OLED display panel emits a white light source or a monochromatic light source.
Further, a plurality of monochromatic light sources are emitted through a plurality of the OLED display panels for displaying a pattern of unused wavelengths or the same wavelength light source is used for increasing the display brightness.
Still further, the lens group includes: any one or more of a diaphragm, a glass plate with pinholes or a grating or a black opaque pattern or other light-transmitting material, a prism, a lens, a reflector, a polarizing prism, a semitransparent reflector, a polarization beam splitter, a trichromatic beam splitter prism, a filter, a spatial light modulator and a polarizing plate.
Still further, the lens is placed in the lens group and used together with other devices in the lens group for adjusting and adjusting the projection distance and the imaging quality, and for adjusting the projection distance between the lens group and the projection area.
Further, the lens comprises any one or more of a telecentric lens, a tube lens, a common imaging lens and a scanning lens.
Compared with the prior art, the invention has the following beneficial effects:
the plurality of light sources emitted by at least two OLED display panels are combined and then projected, the lens group is arranged on the light path of the light sources emitted by the OLED display panels, so that the projected light source patterns can pass through the lens group conveniently, the light sources emitted by the OLED display panels are projected onto a projection area by the lens group for system imaging, and the limitation of the display frequency of a single OLED can be solved and the projection speed of the system can be increased by alternately displaying the plurality of OLED display panels; compared with the traditional projector, the optical structure can be greatly simplified by adopting the OLED display panel, and the system structure is greatly simplified without adding a light homogenizing device and the like; therefore, the projection height adjusting effect is good, and the projection effect is better; the OLED display panel can be used as a self-luminous light source, so that the energy utilization rate is high, and the power consumption is low. The invention can improve the utilization rate of the light source, has simple structure, improves the projection power and the projection speed, and has better use effect.
Drawings
FIG. 1 is a schematic diagram of an OLED-based projection system according to the present invention;
FIG. 2 is a schematic view of a light-emitting block structure of an OLED panel provided by the present invention;
FIG. 3 is a schematic diagram of a projection system based on OLED according to the present invention.
In the figure, 1, an OLED display panel, 11, a first OLED display panel, 12, a second OLED display panel, 13, a third OLED display panel, 2, a lens group, 3, a lens, 4, a projection area, 5 and a light-emitting block.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
According to the embodiment of the invention, the at least two OLED display panels are combined and projected out of the plurality of light sources emitted by the OLED display panels, the lens group is arranged on the light path of the light sources emitted by the OLED display panels, so that the projected light source patterns can conveniently pass through the lens group, the light sources emitted by the OLED display panels are projected onto a projection area by utilizing the lens group for system imaging, and the plurality of OLED display panels are used for displaying alternately, so that the limitation of the display frequency of a single OLED can be solved, and the projection speed of the system can be increased; compared with the traditional projector, the optical structure can be greatly simplified by adopting the OLED display panel, and the system structure is greatly simplified without adding a light homogenizing device and the like; therefore, the projection height adjusting effect is good, and the projection effect is better; the OLED display panel can be used as a self-luminous light source, so that the energy utilization rate is high, and the power consumption is low.
Example one
Referring to fig. 1, the present invention provides an OLED-based projection system, including: at least two OLED display panels 1 for generating self-emitting light sources and projecting the combined light sources; and the lens group 2 is arranged on a light path of a light source emitted by the OLED display panel 1, and projects the light source emitted by the OLED display panel 1 onto a projection area 4 for system imaging.
Specifically, by combining at least two OLED display panels 1 and a plurality of light sources emitted by the OLED display panels, the light sources are projected, and the lens group 2 is disposed on a light path of the light sources emitted by the OLED display panels 1, so that a projected light source pattern can pass through the lens group 2, and the light sources emitted by the OLED display panels 1 are projected onto a projection area 4 by the lens group 2 for system imaging. The plurality of OLED display panels 1 are used for displaying alternately, so that the limitation of the display frequency of a single OLED can be solved, and the projection speed of the system is increased; the plurality of OLED display panels 1 are combined to display an image, so that the projection power can be improved, compared with the traditional projector, the OLED display panels 1 can greatly simplify the optical structure, and a light homogenizing device and the like are not required to be added, so that the system structure is greatly simplified; therefore, the projection height adjusting effect is good, and the projection effect is better; because the OLED display panel 1 can be used as a self-luminous light source, the energy utilization rate is high, and the power consumption is low
In this embodiment, as shown in fig. 1 to 3, the OLED display panel 1 includes: the display device comprises a first OLED display panel 11, a second OLED display panel 12 and a third OLED display panel 13, wherein the first OLED display panel 11 is arranged on one side of the lens group 2, the second OLED display panel 12 and the third OLED display panel 13 are oppositely arranged on the upper end and the lower end of the lens group 2, and the lens group 2 combines light sources emitted by the first OLED display panel 11, the second OLED display panel 12 and the third OLED display panel 13 and then projects the combined light to the projection area 4.
Specifically, the first, second, and third OLED display panels 11, 12, and 13 are used for a spontaneously required light source pattern. Here, the patterns of the first, second, and third OLED display panels 11, 12, and 13 may be the same or different.
By disposing the first OLED display panel 11 on one side of the lens group 2, the second OLED display panel 12 and the third OLED display panel 13 are oppositely disposed on both upper and lower ends of the lens group 2. The light sources emitted by the first OLED display panel 11, the second OLED display panel 12 and the third OLED display panel 13 are combined by the lens assembly 2 and then projected onto the projection area 4. The lens groups 2 passing through the lens groups 2 may be used for achromatization, light collimation, filtering, etc. Therefore, the display power of the projector is convenient to improve, and the patterns with different wavelengths can be displayed by combining a plurality of single-color OLEDs, so that the projector is widely applicable.
In an alternative embodiment of the present invention, as shown in fig. 1-3, when there are two OLED display panels 1, there may be a first OLED display panel 11 and a second OLED display panel 12, the first OLED display panel 11 is disposed on one side of the lens assembly 2, the second OLED display panel is disposed above the lens assembly 2, the light source patterns emitted by the first OLED display panel 11 and the second OLED display panel 12 are projected onto the lens assembly 2, and the light source patterns emitted by the first OLED display panel 11 and the second OLED display panel 12 are combined by the lens assembly 2 and then projected out to the projection area 4 for projection display.
When there are two OLED display panels 1, there may be a first OLED display panel 11 and a third OLED display panel 13, the first OLED display panel 11 is disposed on one side of the lens assembly 2, the third OLED display panel is disposed above the lens assembly 2, the light source patterns emitted by the first OLED display panel 11 and the third OLED display panel 13 are projected onto the lens assembly 2 through the lens assembly 2, and the light source patterns emitted by the first OLED display panel 11 and the third OLED display panel 13 are combined together and then projected out to the projection area 4 for projection display.
In this embodiment, as shown in fig. 1, the OLED display panel 1 has a planar or curved structure. The bending degree of the patterns of the OLED display panel 1 in the shapes and sizes can be flexibly customized, the color of a light source can be flexibly customized, and the LED display panel can adapt to wider and more complex application scenes. The OLED display panel 1 has the characteristics of self-luminous source, high energy utilization rate, low power consumption and the like.
The OLED can be produced on different flexible substrate materials such as plastics and resin, and the soft screen can be realized by evaporating or coating an organic layer on a plastic substrate. Therefore, the pattern focal plane projected by the OLED-based projector can be a plane or a curved surface, and the application scene is wider.
In this embodiment, as shown in fig. 1, the left and right viewing angles of the OLED display panel 1 exceed 170 degrees. The OLED display panel 1 has a wide viewing angle as a light source of a projector, and since the OLED is actively illuminated, a picture is not distorted over a wide viewing angle range compared to other displays. The upper and lower view angles and the left and right view angles exceed 170 degrees, so that the application scenes are wider. Because the finished OLED product has light weight, light and thin volume and self-luminescence, the projection system structure based on the OLED can be made smaller, lighter and more portable.
In this embodiment, as shown in fig. 1-2, the display area of the OLED display panel 1 is provided with one or more light-emitting blocks 5. The display area of the OLED display panel 1 is formed by the light-emitting blocks 5, and the shapes, sizes and numbers of the light-emitting blocks 5 can be customized according to actual requirements. The OLED display panel 1 may thus not be limited to pixel blocks, specific patterns such as a plurality of light emitting strips, non-dense pin hole patterns, and the like. The patterns are various, and the visual effect is better. Meanwhile, the response speed of the OLED display panel 1 is high, and the response time can reach microsecond level. The moving image is better realized due to higher response speed, and the projector can be used as a high-speed projector.
In this embodiment, as shown in fig. 1, the OLED display panel 1 emits a white light source or a monochromatic light source. The OLED display panel 1 directly projects the patterns out from the white light source or the monochromatic light source to generate a projection picture, so that the utilization rate of the light source is greatly improved, and the OLED display panel has the advantages of simple structure, low power consumption and the like.
Further, OLEDs can operate over a wide temperature range compared to LCDs, and can operate properly at temperatures from-40 to 80 degrees celsius, as analyzed by the relevant technology. Therefore, the regional limitation can be reduced, and the solar water heater can be normally used in extremely cold regions. Thus, the OLED projector can work in a more severe scene.
In the present embodiment, as shown in fig. 1, a plurality of OLED display panels 1 emit a plurality of monochromatic light sources for displaying patterns of different wavelengths or a light source of the same wavelength for improving the display brightness.
In this embodiment, referring to fig. 1, the lens group 2 includes: any one or more of a diaphragm, a glass plate with pinholes or a grating or a black opaque pattern or other light-transmitting material, a prism, a lens, a reflector, a polarizing prism, a semitransparent reflector, a polarization beam splitter, a trichromatic beam splitter prism, a filter, a spatial light modulator and a polarizing plate. The light transmission effect is good, so that the projection effect is better.
Optionally, the lens assembly 2 may also be a turning structure for adjusting the projection position of the light source pattern, so as to make the projection effect better.
In this embodiment, as shown in fig. 3, a lens 3 is further included, and the lens 3 is disposed in the lens group 2 and used in combination with other devices in the lens group to adjust the imaging quality and adjust the projection distance between the lens group 2 and the projection area 4. The projection effect is convenient to improve, and the use is convenient.
In this embodiment, referring to fig. 3, the lens 3 includes any one or more combinations of a telecentric lens, a tube lens, a common imaging lens, and a scanning lens. Telecentric lenses (Telecentric) are designed mainly for correcting parallax of conventional industrial lenses, and can be used in a certain object distance range to ensure that the magnification of the obtained image is not changed, which is very important for the case that the measured objects are not on the same object plane. A stop is an entity that acts to limit the light beam in an optical system. It may be the edge of a lens, a frame or a specially provided screen with holes. Its effect can be divided into two aspects, which facilitate limiting the beam or limiting the size of the field of view (imaging range). Thereby improving the projection efficiency of the projection system. The projection system can be applied to intraoral scanners of teeth and the like, and has a wide application range.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An OLED-based projection system, comprising:
at least two OLED display panels for generating self-emitting light sources and projecting the combined light sources;
and the lens group is arranged on a light path of a light source emitted by the OLED display panel, and projects the light source emitted by the OLED display panel onto a projection area for system imaging.
2. The OLED-based projection system of claim 1, wherein the OLED display panel includes: the first OLED display panel is arranged on one side of the lens group, the second OLED display panel and the third OLED display panel are oppositely arranged on the upper end and the lower end of the lens group, and the lens group combines light sources emitted by the first OLED display panel, the second OLED display panel and the third OLED display panel and then projects the light sources onto the projection area.
3. The OLED-based projection system of claim 1, wherein the OLED display panel is in the shape of a planar or curved structure.
4. The OLED based projection system of claim 3 wherein the viewing angle widths to the left and right of the OLED display panel exceed 170 degrees.
5. The OLED-based projection system of claim 1, wherein the display area of the OLED display panel is provided with one or more light-emitting blocks.
6. The OLED-based projection system of claim 1 wherein the OLED display panel emits a white light source or a monochromatic light source.
7. The OLED based projection system of claim 6 wherein multiple monochromatic light sources are emitted by a plurality of said OLED display panels for displaying patterns of unused wavelengths or a same wavelength light source for increasing display brightness.
8. The OLED-based projection system of claim 1, wherein said lens group includes: any one or more of a diaphragm, a glass plate with pinholes or a grating or a black opaque pattern or other light-transmitting material, a prism, a lens, a reflector, a polarizing prism, a semitransparent reflector, a polarization beam splitter, a trichromatic beam splitter prism, a filter, a spatial light modulator and a polarizing plate.
9. The OLED-based projection system of claim 1 further including a lens disposed in said lens group for use with other devices in the lens group for adjusting projection distance and image quality.
10. The OLED based projection system of claim 9 wherein said lens is any one or more combination of a telecentric lens, a tube lens, a normal imaging lens and a scanning lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011237675.XA CN112558389A (en) | 2020-11-09 | 2020-11-09 | OLED-based projection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011237675.XA CN112558389A (en) | 2020-11-09 | 2020-11-09 | OLED-based projection system |
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| CN112558389A true CN112558389A (en) | 2021-03-26 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060227574A1 (en) * | 2005-03-30 | 2006-10-12 | Tseng-Lu Chien | Linear tube night light with changeable light patterns |
| US20090051879A1 (en) * | 2007-06-13 | 2009-02-26 | Anthony Vitale | Viewing System for Augmented Reality Head Mounted Display with Rotationally Symmetric Aspheric Lenses |
| US20090115970A1 (en) * | 2007-11-02 | 2009-05-07 | Jabil Circuit, Inc. | High efficiency compact oled microdisplay projection engine |
| CN109388012A (en) * | 2017-08-04 | 2019-02-26 | 深圳光峰科技股份有限公司 | Projection screen and optical projection system |
| CN111105735A (en) * | 2020-01-13 | 2020-05-05 | 荆门市探梦科技有限公司 | An all-solid-state holographic projector |
-
2020
- 2020-11-09 CN CN202011237675.XA patent/CN112558389A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060227574A1 (en) * | 2005-03-30 | 2006-10-12 | Tseng-Lu Chien | Linear tube night light with changeable light patterns |
| US20090051879A1 (en) * | 2007-06-13 | 2009-02-26 | Anthony Vitale | Viewing System for Augmented Reality Head Mounted Display with Rotationally Symmetric Aspheric Lenses |
| US20090115970A1 (en) * | 2007-11-02 | 2009-05-07 | Jabil Circuit, Inc. | High efficiency compact oled microdisplay projection engine |
| CN109388012A (en) * | 2017-08-04 | 2019-02-26 | 深圳光峰科技股份有限公司 | Projection screen and optical projection system |
| CN111105735A (en) * | 2020-01-13 | 2020-05-05 | 荆门市探梦科技有限公司 | An all-solid-state holographic projector |
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