CN105572853B - optical device - Google Patents

Abstract

The present invention provides an optical device, including a plurality of optical lens groups, an optical sensing element, at least one light source component and a housing. Any optical lens group allows a light beam to pass through it to change the direction of travel of the light beam; and the optical sensing element is used to sense the light beam that passes through at least one of the plurality of optical lens groups and is incident on the optical sensing element, and then converts it into an image signal; and the light source component is used to output the light beam; the housing is used to accommodate and fix the plurality of optical lens groups, the optical sensing element and the at least one light source component. The optical device of the present invention presents a single optical lens type and can also perform different optical functions at the same time, so the overall volume can be miniaturized and the manufacturing cost can be reduced, the assembly procedure of the optical device and the number of components to be assembled can be simplified, and the camera effect of the optical device can be improved.

Description

optical device

technical field

The present invention relates to an optical device, in particular to an optical camera device with illumination function.

Background technique

Please refer to FIG. 1 , which is a schematic structural diagram of a conventional single image photographing device. The single image photographing device 1 includes an optical lens 11, an image sensing element 12, and a housing 13, and the optical lens 11 is composed of at least one lens, and is used for allowing external light beams to pass therethrough, while the image sensing element 12 is used for The light beam passing through the optical lens 11 and incident on it is sensed, and then converted into an image signal for displaying images on the display, and the housing 13 is used to accommodate the optical lens 11 and the image sensing element 12, and provide a stable The positioning effect enables the optical lens 11 and the image sensor 12 to work normally. Wherein, although FIG. 1 shows an independent single image photographing device 1 , due to the rapid development of optical technology, it can also be miniaturized and installed on portable electronic communication products.

However, the single image capturing device 1 shown in FIG. 1 can only capture a single image during one imaging process. In order to overcome this defect, the current technology mainly gathers and arranges a plurality of independent single image capturing devices 1 so as to Capture multiple images at the same time interval.

In detail, please refer to FIG. 2 , which is a schematic structural diagram of a conventional array imaging device. Fig. 2 illustrates that the array image capturing device 2 arranges a plurality of independent single image capturing devices 1 in an array through a frame 21 to form a rectangular shape, and each single image capturing device 1 separates the image after each captures an image. The obtained image signals are sent to a back-end processor (not shown in the figure) for integration and processing for display on a monitor.

Although the existing array imaging device 2 can capture multiple images in one imaging process, the optical functions provided by all single imaging devices 1 are the same, for example, the optical axes of all single imaging devices 1 are fixed to A single direction, that is, there is no angle between any two optical axes, or the field of view or focal length of all single image capturing devices 1 are the same.

Also, limited by the manufacturing process of the current array imaging device, the imaging quality of a single imaging device 1 can only have a resolution of 1M-2M pixels (pixel), so the functions that the array imaging device 2 can provide are limited. . In addition, the structure arranged in an array is obviously too complicated, and since the array imaging device 2 must be provided with a plurality of independent single imaging devices 1 , the cost is too high to be effectively promoted.

Please refer to FIG. 3 , which is a schematic structural diagram of another existing image capturing device. The imaging device 9 includes a plurality of lens modules 91 and a housing 92 for fixing the lens modules, and each lens module 91 includes an optical lens group 911 and an optical sensing element (not shown); wherein, each A lens module 91 captures images separately, and transmits the obtained image signals to a processor (not shown in the figure, which can be built in the housing) for integrated processing to synthesize 3D stereoscopic images or display them on a display. Although the existing image capturing device 9 can also capture multiple images during one imaging process, since a plurality of optical sensing elements are required to be arranged in the housing 92 , the extent to which its volume can be reduced is quite limited.

In addition, whether it is an existing single image capturing device or multiple existing image capturing devices, in consideration of the imaging quality of the capturing device, in order to improve the sharpness of the image obtained by the capturing device, the aperture of the capturing device is often However, if the aperture is narrowed too small, the brightness required by the photographic device will be insufficient, and the overall performance will be reduced instead.

Please refer to FIG. 4 , which is a schematic structural diagram of an existing video camera device equipped with a flashlight. Fig. 4 illustrates that the flashlight 7 is an independent component, which can be independent from the imaging device 8, and can also be combined with the imaging device 8, mainly for the use of the imaging device 8 in the imaging process of the imaging device 8. The environment provides lighting brightness, thereby improving video quality. However, the flashlight 7 occupies too much space, so it is difficult to effectively reduce the overall volume of the image capturing device 8 equipped with the flashlight 7 .

Therefore, how to make the photographing device capture multiple images in one photographing process and flexibly provide different optical functions according to the actual application conditions to obtain the required optical Effect, and in various applications (such as the case of narrowing the aperture), it has become an important issue to be able to obtain the brightness required for imaging.

Contents of the invention

The technical problem to be solved by the present invention is to provide an optical device that is in the form of a single optical lens and can perform different optical functions at the same time, so that the overall volume can be miniaturized and the manufacturing cost can be reduced. , and the assembly procedure of the optical device and the number of components to be assembled are simplified.

The technical problem to be solved by the present invention is to provide an optical device that can provide suitable lighting brightness for the use environment of the optical device to match the brightness required by its optical sensing element, so as to solve the above-mentioned shortcomings in the prior art. Improve the camera quality and effect of the optical device.

The technical solution adopted by the present invention to solve its technical problem is to provide an optical device, including a plurality of optical lens groups, an optical sensing element, at least one light source assembly and a housing, and any one of the optical lens groups is used for light beams passing through and changing the direction of travel; the optical sensing element is used to sense the light beam passing through at least one optical lens group in the plurality of optical lens groups and incident to the optical sensing element; the at least one light source component is used to output the light beam; The casing is used for accommodating and fixing the plurality of optical lens groups, the optical sensing element and the at least one light source assembly.

Preferably, the light beam output by the at least one light source component is used to provide illumination and/or a structured light.

Preferably, the optical device satisfies the following relationship:

B _w >0.6 E _w (F/# _w ) ² ;

Wherein, B _w is a total brightness of the light beam with wavelength w in the light beam output by the at least one light source assembly, E _w is a brightness of the light beam with wavelength w required by the optical sensing element, and F/# _w is An aperture value of the optical lens group for the beam of wavelength w to pass through.

Preferably, each of the light source components includes a light emitting source and a blocking member, and the blocking member is arranged between the light emitting source and the optical sensing element, so as to block the light beam output by the light emitting source from entering the Optical sensing element.

Preferably, the light emitting source includes at least one of a laser diode (LD), a light emitting diode (LED) and an organic light emitting diode (OLED), and the light emitting source is used to output a light beam having a first wavelength range, having At least one of a light beam in a second wavelength range and a light beam in a heat-sensitive wavelength range.

Preferably, one of the plurality of optical lens groups is a central optical lens group, and the other optical lens groups in the plurality of optical lens groups are respectively a peripheral optical lens group and surround the central optical lens group .

Preferably, the optical device satisfies the following relationship:

as well as

Wherein, f _c is an effective focal length (effective focal length, EFL) of this central optical lens group, f _{e, j} is an effective focal length of the jth peripheral optical lens group, and F/# is an effective focal length of this central optical lens group Aperture value (f-number).

Preferably, there is an included angle between a central optical axis of the central optical lens group and a peripheral optical axis of at least one peripheral optical lens group, and the included angle is less than 20 degrees.

Preferably, the at least one light source component is disposed in at least one peripheral optical lens group, or disposed between the at least one peripheral optical lens group and the optical sensing element.

Preferably, the optical device further includes at least one optical filter, and the at least one optical filter is arranged between the plurality of optical lens groups and the optical sensing element, for detecting The light beam is filtered and screened.

Preferably, the at least one optical filter is used to prevent at least one of visible beams, infrared beams, near-infrared beams and far-infrared beams from passing therethrough.

Preferably, the optical device further includes a light-shielding sheet, and the light-shielding sheet is arranged on the front side of the plurality of optical lens groups, and has a plurality of through holes corresponding to the plurality of optical lens groups.

Preferably, one of the plurality of optical lens groups is a visible light lens group, which allows at least one visible light beam to pass through and change the direction of travel, while the other of the plurality of optical lens groups is an invisible light beam The lens group is used for at least one invisible light beam to pass through and change the traveling direction.

Preferably, one of the plurality of optical lens groups is a first optical lens group having a first lens, and another one of the plurality of optical lens groups is a second optical lens group having a second lens A lens group; wherein, the first lens and the second lens are connected integrally.

Preferably, any one of the optical lens groups includes a single lens or a plurality of stacked lenses, and any one of the lenses is made of plastic, glass or silicon-based materials.

Preferably, the optical device is an optical camera device.

A plurality of optical lens groups of the optical device of the present invention can be designed in response to different optical functions (such as wide-angle camera function, non-wide-angle camera function, long-distance camera function, close-range camera function, etc.), and these optical lens groups All are fixed in the same housing and share the same optical sensing element, so the present invention can provide an optical device that is in the form of a single optical lens and can also perform different optical functions at the same time, for example, taking multiple images in one imaging process The images obtained by different optical functions make the overall volume of the optical device miniaturized and reduce the manufacturing cost, and the assembly procedure of the optical device and the number of components to be assembled are simplified. Moreover, since the optical device of the present invention is also provided with a light source assembly that can provide suitable illumination brightness to the use environment of the optical device to match the brightness required by the optical sensing element, and the design of the light source assembly with a plurality of optical lens groups and The optical sensing elements are jointly accommodated in the casing, so the present invention can improve the imaging quality and effect of the optical device while taking into account the overall volume of the optical device.

Description of drawings

FIG. 1 is a schematic structural view of an existing single-image photographing device.

FIG. 2 is a schematic structural diagram of an existing array imaging device.

FIG. 3 : is a schematic structural diagram of another existing video photography device.

FIG. 4 is a schematic structural diagram of an existing video camera device equipped with a flashlight.

FIG. 5 is a schematic diagram of the appearance structure of a first preferred embodiment of the optical device of the present invention.

FIG. 6 : is a partial cross-sectional schematic view of the optical device shown in FIG. 5 along the line L-L.

FIG. 7 is a schematic partial cross-sectional view of a second preferred embodiment of the optical device of the present invention.

Detailed ways

Please refer to FIG. 5 and FIG. 6. FIG. 5 is a schematic view of the appearance structure of the optical device in a first preferred embodiment of the present invention, and FIG. 6 is a partial cross-sectional view of the optical device shown in FIG. 5 along the line L-L. In this preferred embodiment, the optical device 3 is an optical camera device, and includes a first optical lens group 31, a second optical lens group 32, a third optical lens group 33, a fourth optical lens group 34, a light source assembly 35. Optical sensing element 36, optical filter 37, shading sheet 38, and used to house and fix the optical lens groups 31-34, light source assembly 35, optical sensing element 36, optical filter 37, and shading sheet 38 The shell 39. Wherein, the first optical lens group 31 includes the first lens 311, the third lens 312 and the fifth lens 313 in sequence along the direction of the first optical axis 314, and the third optical lens group 33 along the direction of the third optical axis 334 The direction includes the second lens 331, the fourth lens 332 and the sixth lens 333 in sequence; similarly, the second optical lens group 32 and the fourth optical lens group 34 are also along their second optical axis 324 and fourth optical axis 344 The direction of the lens sequence includes a plurality of lenses (not shown), which may be the same as or different from the lens arrangement of the first optical lens group 31 or the third optical lens group 33 .

Furthermore, any of the optical lens groups 31-34 is for light beams to pass through and change the direction of travel, and the optical sensing element 36 is used to sense the light beams that pass through any optical lens groups 31-34 and enter the optical sensing element 36. , and convert it into an image signal for signal processing by a signal processor (not shown) or displaying an image by a monitor (not shown).

Secondly, any of the above-mentioned lenses can be made of a plastic, a glass or a silicon-based material, and although the first optical lens group 31 and the third optical lens group 33 shown in FIG. However, the number of lenses is not limited thereto. For example, any one of the optical lens groups 31-34 may only include a single lens.

Preferably, but not limited thereto, the first lens 311 of the first optical lens group 31, the second lens 331 of the third optical lens group 33, and the phase of the second optical lens group 32 and the fourth optical lens group 34 The lenses at corresponding positions can be connected together, that is, the above-mentioned multiple lenses are integrally formed on a single light-transmitting body. In the same way, the third lens 312 of the first optical lens group 31, the fourth lens 332 of the third optical lens group 33 and the lenses on the corresponding positions of the second optical lens group 32 and the fourth optical lens group 34 can be connected together, and formed in an integrated manner; and the fifth lens 313 of the first optical lens group 31, the sixth lens 333 of the third optical lens group 33, and the second optical lens group 32 and the fourth optical lens group 34 Lenses at corresponding positions can be connected together and formed in an integrated manner.

The aforementioned design in which the plurality of lenses belonging to different optical lens groups 31 - 34 are integrally formed will make the assembly of the optical device 3 easier. In addition, because the optical device 3 of the present invention has the advantage of being miniaturized, it can be applied to handheld mobile devices, such as mobile phones, tablet computers or other wearable devices.

Moreover, the shading sheet 38 is disposed on the front side of the optical lens groups 31-34, and has a plurality of through holes 381 corresponding to the optical lens groups 31-34 and the light source assembly 35, so that each optical lens group 31 Both ~34 and the light source assembly 35 can be exposed, so that the light beams from the outside can enter the optical lens groups 31-34 and the light beams provided by the light source assembly 35 can be output to the outside. Wherein, the purpose of the light-shielding sheet 38 is to shield the stray light around each optical lens group 31 - 34 , thereby ensuring the optical resolution of the light beam incident on the optical sensing element 36 .

In addition, the optical filter 37 is arranged between the optical lens groups 31-34 and the optical sensing element 36, and is used to filter the light beams passing through the optical lens groups 31-34, so that the light beams incident on the optical sensing elements The light beams of the measuring element 36 are all available light beams; for example, the optical filter 37 can be designed to prevent at least one of visible light beams, infrared light beams, near-infrared light beams and far-infrared light beams from passing through according to actual application requirements in.

Secondly, in this preferred embodiment, the third optical lens group 33 is a central optical lens group, and the first optical lens group 31, the second optical lens group 32 and the fourth optical lens group 34 are respectively surrounding the central optical lens group. The peripheral optical lens groups of the lens group, and these peripheral optical lens groups surround the central optical lens group.

Furthermore, each of these optical lens groups 31-34 has an effective focal length (effective focal length, EFL), and since these optical lens groups 31-34 can be composed of lenses with different numbers and/or different optical properties , so the effective focal lengths of any two optical lens groups can be the same or different. In this preferred embodiment, f _c is the effective focal length of the central optical lens group (that is, the effective focal length of the third optical lens group 33), and f _{e, j} is the effective focal length of the jth peripheral optical lens group (that is, f _{e, 1} is the effective focal length of the first optical lens group 31, f _{e, 2} is the effective focal length of the second optical lens group 32, f _{e, 3} is the effective focal length of the fourth optical lens group 34), F/# is the center The aperture value (f-number) of the optical lens group (being the aperture value of the third optical lens group 33), and the optical device 3 satisfies the following relational expression:

as well as

That is to say, in this preferred embodiment, the effective focal lengths of the first optical lens group 31, the second optical lens group 32 and the fourth optical lens group 34 divided by the effective focal length of the third optical lens group 33 are respectively between Between 0.6 and 1.2, and the effective focal length of the third optical lens group 33 divided by the aperture value of the third optical lens group 33 is less than 2.5, so that the optical sensing element 36 can convert the received light beam into The performance of video signal is improved.

Preferably, but not limited thereto, in this preferred embodiment, the optical axis 314 of the first optical lens group 31, the optical axis 324 of the second optical lens group 32 and the optical axis of the fourth optical lens group 34 The angles between 344 and the optical axis 334 of the third optical lens group 33 are all less than 20 degrees, that is, the angles between the optical axis of any peripheral optical lens group and the central optical lens group are all less than 20 degrees, so that the optical Device 3 has a better camera effect.

Optionally, one of the optical lens groups 31-34 and the other are respectively a visible light lens group and an invisible light lens group, and the visible light lens group is for the visible light beam to pass through and change the traveling direction, and The invisible light lens group allows the invisible light beam to pass through and change the traveling direction, but not limited to the above.

In particular, the light source assembly 35 is used to provide suitable lighting brightness for the use environment of the optical device 3, so as to match the brightness required by the optical sensing element 36, so as to improve the light beam received by the optical sensing element 36. The efficiency of converting into image signals, that is, when the brightness of the environment in which the optical device 3 is used is insufficient, or when the aperture (not shown) of any optical lens group 31-34 is too small, the optical sensing element When the total brightness of the light beam received by 36 is insufficient, the light source assembly 35 can be used to provide illumination to the outside of the optical device 3 , so as to improve the imaging effect and function of the optical device 3 .

In this preferred embodiment, the light source assembly 35 includes a stacked light emitting source 351 and a blocking member 352, and the blocking member 352 is located between the light emitting source 351 and the optical sensing element 36 to block the output of the light emitting source 351. The light beam is incident on the optical sensing element 36, thereby ensuring that the light beam output by the light emitting source 351 is output toward the outside of the optical device 3 only in one direction. In another preferred embodiment, the light source unit 35 can also add a diffractive optical unit (not shown) through which the light beam output by the light source 351 passes through according to actual application requirements, so that the optical device 3 can provide a structure to the outside world. Light.

Also, the light emitting source 351 may include at least one of laser diodes (LDs), light emitting diodes (LEDs), organic light emitting diodes (OLEDs), and other light emitting elements similar to semiconductors such as laser diodes, light emitting diodes, and organic light emitting diodes, And the light beam provided by the light source 351 can be at least one of the light beam with the first wavelength range and the light beam with the second wavelength range. For example, the light beams provided by the light source 351 may include visible light beams, invisible light beams, and light beams with heat-sensitive wavelengths.

Optionally, the light source assembly 35 may further include an optical element matched with the light source 351, for example, the optical element may be connected with the first lens 311 of the first optical lens group 31 and the third optical lens group 33 The second lens 331 is connected with the lens 353 , and the lens 353 allows the light beam output by the light source assembly 35 to pass through and change the traveling direction.

Preferably, but not limited thereto, in this preferred embodiment, Bw is the total brightness of the light beam with wavelength _w in the light beam output by the light source assembly 35, and _Ew is the required value of the optical sensing element 36 The wavelength is the brightness of the beam of w, and F/# _w is the aperture value (f-number) of the optical lens group for the beam of wavelength w to pass through, and the optical device 3 satisfies the following relational expression:

B _w >0.6 E _w (F/# _w ) ² ;

Wherein, the light source assembly 35 provides suitable illumination brightness to the operating environment of the optical device 3 through the above relational expression, so as to match the brightness required by the optical sensing element 36 , thereby improving the imaging effect and function of the optical device 3 .

Please refer to FIG. 7 , which is a partial cross-sectional view of a second preferred embodiment of the optical device of the present invention. Wherein, the optical device 3' of this preferred embodiment is roughly similar to that described in the aforementioned first preferred embodiment, and will not be repeated here; however, this preferred embodiment is different from the aforementioned first preferred embodiment The difference is that the light source assembly 35 of the aforementioned first preferred embodiment only includes a single light emitting source 351 , while the light source assembly 35 ′ of this preferred embodiment includes multiple light emitting sources 351 , 354 .

However, the above description is only an embodiment of the present invention, and those skilled in the art can make any equivalent changes and designs according to actual application requirements. For example, the design can be changed so that the optical device is not provided with a filter 37, or the optical device is not provided with a shading sheet 38; for another example, although the shading sheet 38 in the above-mentioned preferred embodiment is It is arranged on the front side of these optical lens groups, but it is not limited thereto, and the design can be changed so that the shading sheet 38 is arranged at other suitable places in the optical device, such as between two optical lens groups, or a single optical lens between the two lenses in the group.

For another example, although the optical device in the above-mentioned preferred embodiment only includes a single optical filter 37, it is not limited thereto, and the design can be changed so that the optical device includes multiple lenses corresponding to multiple optical lens groups respectively. Optionally, any two filters can also be designed to prevent the same kind of light beams from passing through it or prevent different kinds of light beams from passing through them respectively according to specific requirements.

For another example, although the multiple optical lens groups of the optical device in the above-mentioned preferred embodiments are arranged in such a way that the peripheral optical lens groups surround the central optical lens group, it is not limited thereto, and the design can be changed as follows: A plurality of optical lens groups are arranged in a specific shape such as a rectangle.

A plurality of optical lens groups of the optical device of the present invention can be designed respectively in response to different optical functions (such as wide-angle camera function, non-wide-angle camera function, long-distance camera function, close-range camera function, etc.), and it can be seen from the above description Since these optical lens groups are all fixed in the same casing and share the same optical sensing element, the present invention provides an optical device that is in the form of a single optical lens and can perform different optical functions at the same time, for example, in A plurality of images obtained by different optical functions are taken during one imaging process, so that the overall volume of the optical device can be miniaturized and the manufacturing cost can be reduced, and the assembly procedure of the optical device and the number of components to be assembled can be simplified.

Moreover, since the optical device of the present invention is also provided with a light source assembly that can provide suitable illumination brightness to the use environment of the optical device to match the brightness required by the optical sensing element, and the design of the light source assembly with a plurality of optical lens groups and The optical sensing elements are jointly accommodated in the casing, so the present invention can improve the imaging quality and effect of the optical device while taking into account the overall volume of the optical device.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of the claims of the present invention. Therefore, all other equivalent changes or modifications that do not deviate from the spirit disclosed in the present invention should be included in this disclosure. inventions within the scope of patent protection.

Claims (14)

1. A kind of 1. Optical devices, it is characterised in that including：

   Multiple optical lens groups, and any optical lens group be for light beam by and changed direct of travel, wherein, this is more One of a optical lens group is a central optical lens group, and other optical lens components in the plurality of optical lens group Not Wei a peripheral optical lens group, and around the central optical lens group；

   One optical sensing elements, to sense by least optical lens group in the plurality of optical lens group and be incident to this The light beam of optical sensing elements；

   An at least light source assembly, to output beam；And

   One housing, to accommodating and fixed the plurality of optical lens group, the optical sensing elements and an at least light source assembly；

   Wherein, which meets following relationship：

   And

   <mrow> <mfrac> <msub> <mi>f</mi> <mi>c</mi> </msub> <mrow> <mi>F</mi> <mo>/</mo> <mo>#</mo> </mrow> </mfrac> <mo>&lt;</mo> <mn>2.5</mn> <mo>;</mo> </mrow>

   Wherein, f_cFor an effective focal length of the central optical lens group, f_e,jOne for j-th of peripheral optical lens group is effectively burnt Away from F/# is a f-number of the central optical lens group.
2. 2. Optical devices as claimed in claim 1, it is characterised in that the light beam that at least a light source assembly is exported be to Illumination and/or a structure light are provided.
3. 3. Optical devices as claimed in claim 1, it is characterised in that the Optical devices meet following relationship：

   B_w>0.6·E_w·(F/#_w)²；

   Wherein, B_wOne total brightness of the light beam of a length of w of light beam medium wave exported for an at least light source assembly, E_wFor the optics The required wavelength of sensing element be w light beam a brightness, F/#_wThe optical lens group passed through for the light beam for being w for wavelength One f-number.
4. 4. Optical devices as claimed in claim 1, it is characterised in that each light source assembly includes a light emitting source and a resistance Part is hidden, and the resistance hides part and is arranged between the light emitting source and the optical sensing elements, to stop light beam that the light emitting source is exported It is incident to the optical sensing elements.
5. 5. Optical devices as claimed in claim 4, it is characterised in that the light emitting source includes laser diode, light emitting diode And at least one of Organic Light Emitting Diode, and the light emitting source be export with a first wave length section light beam, At least one of light beam with a second wave length section and the light beam with thermoinduction range of wavelengths.
6. 6. Optical devices as claimed in claim 1, it is characterised in that a central optical axis of the central optical lens group with least There is an angle, and the angle is less than 20 degree between one periphery optical axis of the one peripheral optical lens group.
7. 7. Optical devices as claimed in claim 1, it is characterised in that an at least light source assembly is arranged at least one periphery In optical lens group, or it is arranged between at least one peripheral optical lens group and the optical sensing elements.
8. 8. Optical devices as claimed in claim 1, it is characterised in that the Optical devices further include an at least optical filter, and should At least an optical filter is arranged between the plurality of optical lens group and the optical sensing elements, to passing through any optical lens Light beam after microscope group carries out filtering screening.
9. 9. Optical devices as claimed in claim 8, it is characterised in that an at least optical filter is preventing visible light beam, red At least one of outer light beam, near-infrared light beam and far infrared light beam are by wherein.
10. 10. Optical devices as claimed in claim 1, it is characterised in that the Optical devices further include an anti-dazzling screen, and the shading Piece is arranged at the front side of the plurality of optical lens group, and with multiple through holes corresponding to the plurality of optical lens group.
11. 11. Optical devices as claimed in claim 1, it is characterised in that one of the plurality of optical lens group is visible for one Light lens group, it passes through for an at least visible light beam and changes direct of travel, and the another one in the plurality of optical lens group For a black light lens group, it passes through at least one invisible light beam and changes direct of travel.
12. 12. Optical devices as claimed in claim 1, it is characterised in that one of the plurality of optical lens group is with one First optical lens group of the first lens, and the another one in the plurality of optical lens group is second with one second lens Optical lens group；Wherein, which is to be connected with being integrally formed with second lens.
13. 13. Optical devices as claimed in claim 1, it is characterised in that any optical lens group includes single lens or phase Folded multiple lens, and any of which lens are as made by plastics, glass or silica-base material.
14. 14. Optical devices as claimed in claim 1, it is characterised in that the Optical devices are an optical pick-up apparatus.