CN208060871U - Three-dimensional information detection light field optical system - Google Patents
Three-dimensional information detection light field optical system Download PDFInfo
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- CN208060871U CN208060871U CN201820033725.4U CN201820033725U CN208060871U CN 208060871 U CN208060871 U CN 208060871U CN 201820033725 U CN201820033725 U CN 201820033725U CN 208060871 U CN208060871 U CN 208060871U
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Abstract
This application discloses a kind of three-dimensional information detection light field optical systems.By the way that laser illumination light source, a diffraction optical element and mirror system is arranged；The laser light source that the laser illumination light source is sent out reflexes to the diffraction optical element by the mirror system；The mirror system, including one or more pieces plane mirrors；The diffraction optical element, for using incident laser light source as the light field of optical field distribution needed for illumination light field and generation.Only use simple several optical elements, you can the function of realizing complicated optical system can effectively reduce system thickness using mirror system.Multiple advantages, the three-dimensional information detection structure light field systems that microstructure is realized such as the optical technology of the utility model has optical texture refining, mechanical control system is simple, optical efficiency is high, size is miniaturized, is of low cost, easy to operate are in urgent need state.
Description
Technical field
This application involves optical fields, in particular to a kind of three-dimensional information detection light field optical system.
Background technology
The mobile devices such as modern cell phones, tablet computer, smartwatch, consumer electronics are quickly grown, each photovoltaic neck
Domain is detected to the three-dimensional information of external environment and application is more and more extensive, such as is used for equipment solution for the 3D detections of face
Lock applies surrounding three-dimensional infomation detection for IOT or AR/VR.The technical products in above application field are required for using
In high precision, high-resolution and small size, the three dimensional detection of high integration structure light optical system.
It is blocked based on mask and the development of miniature projection optical systems technology, three-dimensional information detection structure may be implemented
Light field optical system, but the optical system is applied to mobile device, consumer electronics, needs to further decrease light intensity use effect
Rate, the size of the size of reduction system, especially short transverse, in order to improve integrated level, but after integrated level is got higher, meeting
Cause the problems such as mechanical adjustment is inconvenient, optical efficiency is low, and manufacturing cost is got higher.
For problem present in the relevant technologies, currently no effective solution has been proposed.
Utility model content
The main purpose of the application is to provide a kind of three-dimensional information detection light field optical system and its method, with
It solves the problems, such as present in the relevant technologies.
To achieve the goals above, according to the one side of the application, a kind of three-dimensional information detection structure light is provided
Field optical system.
Include according to a kind of three-dimensional information detection light field optical system of the application：
Laser illumination light source, a diffraction optical element and mirror system；What the laser illumination light source was sent out
Laser light source reflexes to the diffraction optical element by the mirror system；
The mirror system, including one or more pieces plane mirrors；
The diffraction optical element, for using incident laser light source as the knot of optical field distribution needed for illumination light field and generation
Structure light field.
Further, three-dimensional information detection light field optical system as the aforementioned, the laser illumination light source hair
The laser light source gone out vertically injects the diffraction optical element after being reflected by mirror system.
Further, three-dimensional information detection light field optical system as the aforementioned, the laser illumination light source hair
It is spherical wave laser light source or plane wave laser light source before the laser wave gone out.
Further, three-dimensional information detection light field optical system as the aforementioned, in the laser illumination light source
When being plane wave laser light source before the laser wave sent out, further include：Lens system；The lens system is for making the plane wave
Laser light source is generating the illumination light field propagated with spherical wave laser light source after the lens system.
Further, three-dimensional information detection light field optical system as the aforementioned, the diffraction optical element is full
The optical element of sufficient fresnel diffraction or the optical element for meeting Fraunhofer diffraction.
Further, three-dimensional information as the aforementioned detection light field optical system, the lens system be it is a piece of or
Multi-disc curved mirror.
Further, three-dimensional information as the aforementioned detection light field optical system, the laser illumination light source with
Diffraction optical element is fixed setting, and the mirror system is to be movably arranged.
In the embodiment of the present application, using only by adjusting the position of mirror system, realization diffraction optical element surface
The mode of the adjusting of light field parameter, by the way that laser illumination light source, a diffraction optical element and mirror system is arranged；It is described
The laser light source that laser illumination light source is sent out reflexes to the diffraction optical element by the mirror system；The reflection
Mirror system, including one or more pieces plane mirrors；The diffraction optical element is used for using incident laser light source as illumination light field simultaneously
The light field of optical field distribution needed for generating.Only use simple several optical elements, you can realize the function of complicated optical system,
System thickness can be effectively reduced using mirror system.The optical technology of the utility model has optical texture refining, machinery
The multiple advantages such as regulating system is simple, optical efficiency is high, size is miniaturized, is of low cost, easy to operate, microstructure institute are real
Existing three-dimensional information detection structure light field system is in urgent need state.
Description of the drawings
The attached drawing constituted part of this application is used for providing further understanding of the present application so that the application's is other
Feature, objects and advantages become more apparent upon.The illustrative examples attached drawing and its explanation of the application is for explaining the application, not
Constitute the improper restriction to the application.In the accompanying drawings：
Fig. 1 is that laser illumination light source is radiated at the light on diffraction optical element by monolithic speculum in a kind of embodiment
Learn system structure diagram；
Fig. 2 is the optical system knot that laser illumination light source passes through by 2 speculums and lens forming in a kind of embodiment
Structure schematic diagram；
Fig. 3 is the optics that laser illumination light source is radiated at by monolithic speculum and single element lens on diffraction optical element
A kind of structural schematic diagram of embodiment of system；And
Fig. 4 is the optics that laser illumination light source is radiated at by monolithic speculum and single element lens on diffraction optical element
The structural schematic diagram of another embodiment of system.
Specific implementation mode
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, technical solutions in the embodiments of the present application are clearly and completely described, it is clear that described embodiment is only
The embodiment of the application part, instead of all the embodiments.Based on the embodiment in the application, ordinary skill people
The every other embodiment that member is obtained without making creative work should all belong to the model of the application protection
It encloses.
It should be noted that term " first " in the description and claims of this application and above-mentioned attached drawing, "
Two " etc. be for distinguishing similar object, without being used to describe specific sequence or precedence.It should be appreciated that using in this way
Data can be interchanged in the appropriate case, so as to embodiments herein described herein.In addition, term " comprising " and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing series of steps or unit
Process, method, system, product or equipment those of are not necessarily limited to clearly to list step or unit, but may include without clear
It is listing to Chu or for these processes, method, product or equipment intrinsic other steps or unit.
In this application, term "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outside",
" in ", "vertical", "horizontal", " transverse direction ", the orientation or positional relationship of the instructions such as " longitudinal direction " be orientation based on ... shown in the drawings or
Position relationship.These terms are not intended to limit indicated primarily to preferably describe the utility model and embodiment
Device, element or component must have particular orientation, or constructed and operated with particular orientation.
Also, above-mentioned part term is other than it can be used to indicate that orientation or positional relationship, it is also possible to for indicating it
His meaning, such as term "upper" also are likely used for indicating certain relations of dependence or connection relation in some cases.For ability
For the those of ordinary skill of domain, the concrete meaning of these terms in the present invention can be understood as the case may be.
In addition, term " installation ", " setting ", " being equipped with ", " connection ", " connected ", " socket " shall be understood in a broad sense.For example,
It may be a fixed connection, be detachably connected or monolithic construction；Can be mechanical connection, or electrical connection；It can be direct phase
Even, or indirectly connected through an intermediary, or it is two connections internal between device, element or component.
For those of ordinary skills, it can understand that above-mentioned term in the present invention specific contains as the case may be
Justice.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Figure 1, a kind of three-dimensional information detection light field optical system, including：Laser illumination light source 1, one
A diffraction optical element 3 and mirror system 2；The laser light source that the laser illumination light source 1 is sent out passes through the speculum
System 2 reflexes to the diffraction optical element 3；
The mirror system 2, including one or more pieces plane mirrors；
The diffraction optical element 3, for incident laser light source as illumination light field and to be generated required optical field distribution
Light field；In general, the diffraction optical element, is to use needs for the detection of optical system three-dimensional information, sets in advance
Count out original optical field distribution；And it after processing of the light field of the laser illumination light source 1 by mirror system 2, is radiated at
On diffraction optical element 3, the light field needed for three-dimensional information detection is realized by diffraction optical element 3.
The present embodiment changes in the related technology by adjusting the position of laser illumination light source, laser illumination light source 1
Coordinate with mirror system 2 and adjust, to adjust the structure feature for being radiated at the light field wavefront on diffraction optical element.Diffraction light
Learning the position of element 3 and laser illumination light source 1 can determine and fix completely, only by adjusting the position of mirror system 2,
Realize the adjusting of 3 surface optical field parameter of diffraction optical element, you can the realization of light field needed for realizing.Utility model design is complete
Simple, the high-precision regulative mode of three-dimensional information detection light field, and the compact dimensions of the optical system are realized, it is high
Spend small-sized, assembling integrated level is high, is a kind of function improving optical system, reduces optical system size and low cost
Simple optics structure design.
Further, three-dimensional information detection light field optical system as the aforementioned, the laser illumination light source 1 are sent out
The laser light source gone out vertically injects the diffraction optical element 3 after being reflected by mirror system 2.And use the setting can be with
The length or thickness for effectively reducing optical system are more easy to be integrated in other apparatus structures.
In some embodiments, three-dimensional information detection light field optical system as the aforementioned, the laser illumination
It is spherical wave laser light source or plane wave laser light source before the laser wave that light source 1 is sent out.It is spherical wave laser before the laser wave
There are certain diverging or convergence angle when light source.
In some embodiments, three-dimensional information detection light field optical system as the aforementioned, shines in the laser
It is plane wave laser light source to penetrate before the laser wave that light source 1 is sent out, i.e., the laser illumination light source 1 be the laser by collimating
When device, further include：Lens system 4；The lens system 4 is for making the plane wave laser light source across the lens system
The illumination light field propagated with spherical wave laser light source is generated after 4.Fig. 1 shows laser illumination light sources to pass through monolithic speculum
It is radiated on diffraction optical element；Fig. 2 indicates that laser illumination light source passes through the optical system by 2 speculums and lens forming
System, is radiated on diffraction optical element；Fig. 3 and Fig. 4 indicates that laser illumination light source shines by monolithic speculum and single element lens
It penetrates on diffraction optical element.
In some embodiments, three-dimensional information detection light field optical system as the aforementioned, the diffraction optics member
Part 3 is to meet the optical element of fresnel diffraction or meet the optical element of Fraunhofer diffraction.
In some embodiments, three-dimensional information detection light field optical system as the aforementioned, the lens system 4 are
One or more pieces curved mirrors.
Further, three-dimensional information as the aforementioned detection light field optical system, the laser illumination light source 1 with
Diffraction optical element 3 is fixed setting, and the mirror system 2 is to be movably arranged.
Using the method that above-mentioned optical system generates three-dimensional information detection light field, including：
S1. laser light source is launched by laser illumination light source 1, and makes the laser light source irradiation mirror system 2；
S2. the laser light source is reflected by the mirror system 2, is radiated on diffraction optical element 3；
S3. three-dimensional information detection structure light is generated after the specific light field is on being radiated at the diffraction optical element 3
?.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (7)
1. a kind of three-dimensional information detection light field optical system, which is characterized in that including：Laser illumination light source, one
Diffraction optical element and mirror system；The laser light source that the laser illumination light source is sent out is anti-by the mirror system
It is incident upon the diffraction optical element；
The mirror system, including one or more pieces plane mirrors；
The diffraction optical element, for using incident laser light source as the structure light of optical field distribution needed for illumination light field and generation
?.
2. three-dimensional information detection light field optical system according to claim 1, which is characterized in that the laser
The laser light source that radiation source is sent out vertically injects the diffraction optical element after being reflected by mirror system.
3. three-dimensional information detection light field optical system according to claim 1, which is characterized in that the laser
It is spherical wave laser light source or plane wave laser light source before the laser wave that radiation source is sent out.
4. three-dimensional information detection light field optical system according to claim 3, which is characterized in that in the laser
When being plane wave laser light source before the laser wave that device radiation source is sent out, further include：Lens system；The lens system is for making
The plane wave laser light source is generating the illumination light field propagated with spherical wave laser light source after the lens system.
5. three-dimensional information detection light field optical system according to claim 1, which is characterized in that the diffraction light
It is the optical element for meeting fresnel diffraction or the optical element for meeting Fraunhofer diffraction to learn element.
6. three-dimensional information detection light field optical system according to claim 4, which is characterized in that the lens system
System is one or more pieces curved mirrors.
7. three-dimensional information detection light field optical system according to claim 1, which is characterized in that the laser
Radiation source is fixed setting with diffraction optical element, and the mirror system is to be movably arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201820033725.4U CN208060871U (en) | 2018-01-09 | 2018-01-09 | Three-dimensional information detection light field optical system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820033725.4U CN208060871U (en) | 2018-01-09 | 2018-01-09 | Three-dimensional information detection light field optical system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051929A (en) * | 2018-01-09 | 2018-05-18 | 北京驭光科技发展有限公司 | Three-dimensional information detection light field optical system and its method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051929A (en) * | 2018-01-09 | 2018-05-18 | 北京驭光科技发展有限公司 | Three-dimensional information detection light field optical system and its method |
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