CN110716377A - Projection module, photoelectric device and electronic equipment - Google Patents
Projection module, photoelectric device and electronic equipment Download PDFInfo
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- CN110716377A CN110716377A CN201810769554.6A CN201810769554A CN110716377A CN 110716377 A CN110716377 A CN 110716377A CN 201810769554 A CN201810769554 A CN 201810769554A CN 110716377 A CN110716377 A CN 110716377A
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- laser
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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
- G03B21/2033—LED or laser light sources
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/0944—Diffractive optical elements, e.g. gratings, holograms
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Abstract
The invention discloses a projection module, an optoelectronic device and electronic equipment. The projection module comprises a light source, a collimation element and a diffraction optical element. The light source is used for emitting laser; the collimating element is used for collimating the laser emitted by the light source; the diffractive optical element comprises an incident surface and an emergent surface which are opposite, the incident surface is opposite to the collimating element and is provided with a Fresnel microstructure, the Fresnel microstructure is used for being matched with the collimating element to achieve collimation adjustment of laser, and the diffractive optical element is used for receiving the laser collimated by the collimating element and expanding the laser to form a laser pattern. According to the projection module, the photoelectric device and the electronic equipment, provided by the embodiment of the invention, the Fresnel microstructure is arranged on the incident surface of the diffractive optical element, so that the same optical performance can be achieved under the condition of reducing the number of lenses of the collimation element, the miniaturization of the projection module is facilitated, and the cost of the collimation element is reduced. Meanwhile, the Fresnel microstructure and the diffractive optical element are of an integrated structure, so that the laser beam expanding effect and quality can be further improved.
Description
Technical Field
The invention relates to the field of photoelectric technology, in particular to a projection module, a photoelectric device and electronic equipment.
Background
At present, the projection module often adopts collimating element to assemble the laser of light source transmission so that laser parallel projection goes out, but present collimating element is more in order to realize that the general lens of collimating effect is more, is unfavorable for projection module's miniaturization.
Disclosure of Invention
The embodiment of the invention provides a projection module, an optoelectronic device and electronic equipment.
The projection module comprises a light source, a collimation element and a diffraction optical element. The light source is used for emitting laser; the collimation element is used for collimating the laser emitted by the light source; the diffractive optical element comprises an incident surface and an emergent surface which are opposite to each other, the incident surface is opposite to the collimation element and is provided with a Fresnel microstructure, the Fresnel microstructure is used for being matched with the collimation element to realize collimation adjustment of the laser, and the diffractive optical element is used for receiving the laser collimated by the collimation element and expanding the laser to form a laser pattern.
According to the projection module provided by the embodiment of the invention, the Fresnel microstructure is arranged on the incident surface of the diffractive optical element, so that the same optical performance can be achieved under the condition of reducing the number of lenses of the collimating element, and the miniaturization of the projection module is facilitated. Meanwhile, based on the Fresnel microstructure and the diffractive optical element integrated structure, the light ray position and the alignment effect are better, and the laser beam expanding effect and quality are further improved.
In some embodiments, the fresnel microstructure includes a first region including the center of the incident surface and a second region surrounding the first region, and the depth of the fresnel microstructure of the second region is deeper than that of the fresnel microstructure of the first region.
Therefore, the depth of the Fresnel microstructure in the second area is set to be deeper than that of the Fresnel microstructure in the first area, and the optical performance requirement of the projection module can be met.
In some embodiments, a diffractive microstructure is disposed on the exit surface, and the diffractive microstructure is configured to expand the collimated laser light to form a laser pattern.
Therefore, the divergence angle of the laser and the appearance of the formed light spot can be accurately controlled through the diffraction microstructure, and one laser beam is expanded to form a specific laser pattern.
In some embodiments, the diffractive microstructures are nanoscale diffractive microstructures and are uniformly distributed on the exit surface; and/or the Fresnel microstructure is a nano-scale Fresnel microstructure.
The nanometer grade Fresnel microstructure is finer than the structure of a common Fresnel structure, the precision is higher, good light condensation performance and imaging performance can be guaranteed on the premise of reducing the number of lenses of the collimation element, and the influence of the spherical aberration of the collimation element on the laser quality can be reduced to a certain extent. The length of the projection module in the light-emitting direction is shortened, and the cost of the collimation element is reduced. The nanometer level diffraction microstructure has a finer structure than the common micrometer level diffraction structure, so that one laser beam can be expanded into more laser beams to form a finer laser pattern.
In some embodiments, the projection module further includes a prism for reflecting the laser light emitted from the light source so that the laser light is incident perpendicularly to the collimating element.
The prism and the matched light source can realize a periscopic structure, and the length of the projection module in the light emitting direction is favorably shortened.
In some embodiments, the prism, the collimating element and the diffractive optical element are sequentially arranged along the light-emitting optical path, the prism comprises a reflecting surface, the light source comprises a light-emitting surface, and the light-emitting surface and the reflecting surface are opposite in interval and mutually form an included angle.
So, can reflect the laser that the light emitting area sent to collimation component through the plane of reflection, can control the direction of reflection of laser through the regulation of contained angle to incide collimation component with more reasonable angle.
In some embodiments, the light source comprises a vertical cavity surface emitter or an edge emitting laser.
The edge-emitting laser is used as a light source, has a single-point light-emitting structure, does not need to design an array structure, is simple to manufacture, has lower cost for the light source of the laser projection module, and has smaller temperature drift than a vertical cavity surface emitter. And the vertical cavity surface emitter is adopted as a light source, so that the irrelevance of laser patterns is higher, and the acquisition of a high-precision depth image is facilitated.
In some embodiments, the incident surface having the fresnel microstructure is aspheric.
The incident surface is an aspheric surface, which is beneficial to the manufacture of the Fresnel microstructure.
The photoelectric device comprises a projection module and a camera module. The projection module is used for emitting laser patterns to a target object; the camera module is used for receiving the laser pattern modulated by the target object.
The photoelectric device provided by the embodiment of the invention has the advantages that the Fresnel microstructure is arranged on the incident surface of the diffractive optical element, so that the same optical performance can be achieved under the condition of reducing the number of lenses of the collimating element, and the miniaturization of the projection module is facilitated. Meanwhile, based on the Fresnel microstructure and the diffractive optical element integrated structure, the light ray position and the alignment effect are better, and the laser beam expanding effect and quality are further improved.
According to the electronic equipment provided by the embodiment of the invention, the Fresnel microstructure is arranged on the incident surface of the diffractive optical element, so that the same optical performance can be achieved under the condition of reducing the number of lenses of the collimating element, and the miniaturization of the projection module is facilitated. Meanwhile, based on the Fresnel microstructure and the diffractive optical element integrated structure, the light ray position and the alignment effect are better, and the laser beam expanding effect and quality are further improved. In addition, the housing has a protective effect on the photoelectric device.
Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of an electronic device according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of an optoelectronic device according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a projection module according to an embodiment of the invention; and
FIG. 4 is a schematic structural diagram of a diffractive optical element of the projection module shown in FIG. 3.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. The same or similar reference numbers in the drawings identify the same or similar elements or elements having the same or similar functionality throughout.
In addition, the embodiments of the present invention described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the embodiments of the present invention, and are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1, an electronic device 1000 according to an embodiment of the invention includes a housing 200 and an optoelectronic device 100. The electronic device 1000 may be a monitoring camera, a mobile phone, a tablet computer, a laptop computer, a game machine, a head display device, an access control system, a teller machine, etc., and the electronic device 1000 is taken as an example to illustrate the embodiment of the present invention. The optoelectronic device 100 is disposed on the housing 200 to obtain an image, specifically, the optoelectronic device 100 is disposed in the housing 200 and exposed from the housing 200, the housing 200 can provide protection for the optoelectronic device 100, such as dust prevention, water prevention, and falling prevention, and a hole corresponding to the optoelectronic device 100 is opened on the housing 200, so that light passes through the hole or penetrates into the housing 200.
Referring to fig. 2, the optoelectronic device 100 includes a projection module 10, a camera module 20, and a processor 30. The projection module 10 is used for emitting laser patterns towards a target object. The camera module 20 is used for receiving the laser pattern modulated by the target object. The processor 30 is used for imaging (depth image) according to the laser pattern received by the camera module 20.
Referring to fig. 3, the projection module 10 includes a light source 11, a collimating element 12, and a diffractive optical element 13. The light source 11 is used to emit laser light L. The collimating element 12 is used to collimate the laser light L emitted by the light source 11. The diffractive optical element 13 includes an incident surface 132 and an exit surface 134 that are opposite. The incident surface 132 is opposite to the collimating element 12 and is provided with a fresnel microstructure 136, and the fresnel microstructure 136 is used for realizing collimation adjustment of laser light by matching with the collimating element 12. The diffractive optical element 13 is configured to receive the laser light L collimated by the collimating element 12 and expand the laser light L to form a laser light pattern.
Specifically, the light source 11 is configured to emit laser light L, the laser light L is collimated by the collimating element 12 and emitted to the incident surface 132 of the diffractive optical element 13, and the laser light L is adjusted by the fresnel microstructure 136 and emitted from the emitting surface 134 of the diffractive optical element 13 to form a laser light pattern.
In the projection module 10 according to the embodiment of the present invention, the fresnel microstructure 136 is disposed on the incident surface 132 of the diffractive optical element 13, so that the same optical performance can be achieved while the number of lenses of the collimating element 12 is reduced, which is advantageous for the miniaturization of the projection module 10. And under the condition that the conditions such as the material and the manufacturing process of the collimation element 12 are not changed, the number of the lenses of the collimation element 12 is reduced, so that the cost of the collimation element 12 is reduced. Meanwhile, based on the Fresnel microstructure 136 and the diffractive optical element 13 which are integrated, the light position and the alignment effect are better, and the laser beam expanding effect and the laser beam expanding quality are further improved.
Referring to fig. 3 and 4, the projection module 10 includes a light source 11, a collimating element 12, a diffractive optical element 13, a prism 14, a substrate 15, and a lens barrel 16.
The substrate 15 may be at least one of a flexible circuit board, a hard circuit board, or a rigid-flex circuit board.
The lens barrel 16 is disposed on the substrate 15 and forms a housing space 17 with the substrate 15, and the connection method of the lens barrel 16 and the substrate 15 includes screwing, gluing, engaging and the like. The light source 11, the collimating element 12, the diffractive optical element 13, and the prism 14 are all housed in the housing space 17. The diffractive optical element 13, the collimating element 12 and the prism 14 are arranged in this order along the outgoing light path. The lens barrel 16 has a protective function for the light source 11, the collimating element 12, the diffractive optical element 13, and the prism 14.
The light source 11 may be disposed on the substrate 15. The light source 11 includes a light-emitting surface 112, and laser light is emitted from the light-emitting surface 112. The light source 11 may be an edge-Emitting Laser (e.g., a Distributed Feedback Laser (DFB)) or a Vertical-Cavity Surface-Emitting Laser (VCSEL)). The light source 11 is used to emit laser light toward the prism 14. The edge-emitting laser is used as the light source 11, has a single-point light-emitting structure, does not need to design an array structure, is simple to manufacture, has lower cost for the light source 11 of the laser projection module, and has smaller temperature drift than a vertical cavity surface emitter. By using the vertical cavity surface emitter as the light source 11, the irrelevance of the laser pattern is higher, which is beneficial to obtaining a high-precision depth image.
The collimating element 12 is disposed on the barrel 16 and may be fixed within the barrel 16 by means of snap-fit, gluing, or the like. The collimating element 12 is used to collimate the laser light. The collimating element 12 is a lens, which may be a separate lens, the lens being a convex lens or a concave lens; or the collimating element 12 is a plurality of lenses, which may be all convex lenses or concave lenses, or part of the lenses is convex lenses and part of the lenses is concave lenses.
The diffractive optical element 13 is also provided on the lens barrel 16 so as to face the collimating element 12, and can be fixed in the lens barrel 16 by means of engagement, gluing, or the like. The diffractive optical element 13 comprises opposite entrance and exit faces 132, 134. The entrance face 132 is opposite the collimating element 12 and is formed with a fresnel microstructure 136. Exit face 134 is provided with diffractive microstructure 138, diffractive microstructure 138 being configured to expand the collimated laser light to form a laser light pattern. The fresnel structure is generally a plurality of zigzag concentric circles from small to large, and it should be noted that the embossed concentric circle texture is designed according to the requirements of light interference, diffraction, relative sensitivity and acceptance angle. In the field of focusing or collimating of optical lenses, the refraction energy of laser light generally only occurs on the optical surface of the lens, and the appropriate reduction of the partially incoherent optical material of the lens does not affect the refraction energy of the lens to the laser light. Since the fresnel microstructure 136 is formed on the incident surface 132 of the diffractive optical element 13, the collimating element 12 can cooperate to collimate the laser light emitted by the light source 11, and the refraction energy of the collimated laser light is not affected. Meanwhile, based on the Fresnel microstructure 136 and the diffractive optical element 13 which are integrated, the light position and the alignment effect are better, and the laser beam expanding effect and quality can be further improved. The fresnel microstructure 136 according to the embodiment of the invention includes a first region 1362 and a second region 1364 surrounding the first region 1362, wherein the first region 1362 surrounds the center of the incident surface 132. The depth of the fresnel microstructure 136 of the second region 1364 is deeper than the depth of the fresnel microstructure 136 of the first region 1362, that is, the height of the concentric circle of the second region 1364 is higher than the height of the concentric circle of the first region 1362. Thus, the optical performance requirements of the projection module 10 can be satisfied. In addition, the incident surface 132 is aspheric, which is beneficial to the fabrication of the fresnel microstructure 136. The fresnel microstructure 136 is disposed on the incident surface 132 of the diffractive optical element 13, so that the good light-gathering performance and the good imaging performance can be ensured on the premise of reducing the number of lenses of the collimating element 12, and the influence of the spherical aberration of the collimating element 12 on the quality of the laser can be reduced to a certain extent, which is beneficial to shortening the length of the projection module 10 and reducing the cost of the collimating element 12. Furthermore, the fresnel microstructure 136 according to the embodiment of the present invention is a nano-scale fresnel microstructure 136, and the nano-scale fresnel microstructure 136 has a finer structure, higher precision and better optical performance than a common fresnel structure.
The Diffractive Optical Elements 13 (DOE) are a type of Optical Elements that are based on the principle of light diffraction, and are formed by etching a step-type or continuous relief structure (generally, a grating structure) on a substrate (or a surface of a conventional Optical device) through a semiconductor chip manufacturing process by using a computer aided design to form a coaxial reproduction and have an extremely high diffraction efficiency. Different optical path differences are generated when the laser passes through, and the Bragg diffraction condition is met. The divergence angle of the laser and the appearance of the formed light spot are controlled through different designs, and the function of forming a specific pattern by the laser is realized. The exit surface 134 of the diffractive optical element 13 of the embodiment of the present invention is provided with the diffractive microstructure 138, the diffractive microstructure 138 is a plurality of steps (i.e., a grating structure) with a certain depth, and compared with the micron-scale diffractive microstructure 138 of a general diffractive optical structure, the diffractive microstructure 138 of the present invention is the nano-scale diffractive microstructure 138, and the nano-scale diffractive microstructure 138 is uniformly distributed on the exit surface 134, so as to more precisely control the divergence angle of the laser and form the appearance of a light spot, and expand a beam of laser to form a specific laser pattern. Moreover, the grating structure of the nano-scale diffractive microstructure 138 has a higher density, and can expand one laser beam into more laser beams to form a finer laser pattern than a typical micro-scale diffractive structure.
The prism 14 is formed with a reflection surface 142 and may be disposed on the substrate 15. The prism 14 may be a triangle, a trapezoid, etc., and is not limited thereto, and the prism 14 according to the embodiment of the present invention is a triangle prism. The reflecting surface 142 and the light emitting surface 112 are opposite at intervals and form an included angle with each other, and the reflecting angle of the laser can be controlled by controlling the included angle. For example, the included angle is 45 degrees, so that the light emitted from the light emitting surface 112 is reflected by the prism 14, the light incident in parallel in the light is reflected by the reflecting surface 142 and then vertically enters the collimating element 12, a small part of the other light incident in non-parallel is reflected by the reflecting surface 142, the reflected light is not vertically entered into the collimating element 12, and the light is collimated by the collimating element 12 and adjusted by the fresnel microstructure 136 and then enters the diffractive optical element 13 from the incident surface 132 of the incident diffractive optical element 13 together with the light incident in parallel, thereby facilitating the diffraction replication of the laser in the diffractive optical element 13 to form a laser pattern. In addition, the prism 14 can realize a periscopic structure in cooperation with the light source 11, which is beneficial to shortening the length of the projection module 10 in the light outgoing direction.
In the projection module 10 according to the embodiment of the present invention, the fresnel microstructure 136 is disposed on the incident surface 132 of the diffractive optical element 13, so that laser light can be adjusted by the fresnel microstructure 136 to ensure good light-condensing performance and imaging performance while the number of lenses of the collimating element 12 is reduced, and the influence of spherical aberration of the collimating element 12 on the quality of the laser light can be reduced to a certain extent. And under the condition that the conditions such as the material and the manufacturing process of the collimation element 12 are not changed, the number of the lenses of the collimation element 12 is reduced, so that the cost of the collimation element 12 is reduced.
Referring to fig. 2 to 4, the optoelectronic device 100 may have a collecting window 50 corresponding to the camera module 20 and a projecting window 40 corresponding to the projecting module 10. The projection module 10 is used for projecting a laser pattern to a target space through the projection window 40, and the camera module 20 is used for receiving the laser pattern modulated by the target object for imaging. When the projection module 10 emits light, the light source 11 emits laser, the laser is reflected by the prism 14 and then enters the collimating element 12, then the laser is collimated by the collimating element 12, and then is adjusted by the fresnel microstructure 136 arranged on the entrance surface 132 and then reaches the exit surface 134 of the diffractive optical element 13, and the laser is expanded after passing through the diffractive microstructure 138 to form a laser pattern. For example, the projection module 10 emits a laser pattern, which is a speckle pattern, toward the target object. The camera module 20 collects the laser pattern modulated and reflected by the target object through the collection window 50. The processor 30 is connected to both the camera module 20 and the projection module 10, and the processor 30 is used for processing the laser pattern to obtain a depth image. Specifically, the processor 30 generates a depth image from the difference between the laser pattern and the reference pattern by comparing the laser pattern with the reference pattern. In other embodiments, the laser pattern is a coded structured light image with a specific pattern, i.e. with a specific code, and the depth image is obtained by extracting the coded structured light image from the laser pattern and comparing the extracted coded structured light image with a reference pattern. The obtained depth image can be applied to the fields of face recognition, 3D modeling and the like.
In the optoelectronic device 100 according to the embodiment of the present invention, the fresnel microstructure 136 is disposed on the incident surface 132 of the diffractive optical element 13, so that the number of lenses of the collimating element 12 can be reduced, and the influence of the spherical aberration of the collimating element 12 on the laser quality can be reduced to a certain extent. And under the condition that the conditions such as the material and the manufacturing process of the collimation element 12 are not changed, the number of the lenses of the collimation element 12 is reduced, so that the cost of the collimation element 12 is reduced. In addition, the optoelectronic device 100 can receive and process the laser pattern modulated by the target object through the cooperation of the camera module 20 and the processor 30 to obtain a depth image, so that the optoelectronic device can be applied to the fields of face recognition, 3D modeling, and the like.
In the description of the specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, unless specifically limited otherwise.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention, which is defined by the claims and their equivalents.
Claims (10)
1. The utility model provides a projection module, its characterized in that, projection module includes:
a light source for emitting laser light;
a collimating element for collimating laser light emitted by the light source; and
the laser device comprises a diffractive optical element and a laser beam splitter, wherein the diffractive optical element comprises an incident surface and an emergent surface which are opposite to each other, the incident surface is opposite to the collimation element and is provided with a Fresnel microstructure, the Fresnel microstructure is used for being matched with the collimation element to realize collimation adjustment of laser, and the diffractive optical element is used for receiving the laser collimated by the collimation element and expanding the laser beam to form a laser pattern.
2. The projection module as claimed in claim 1, wherein the fresnel microstructure comprises a first region including the center of the incident surface and a second region surrounding the first region, and the depth of the fresnel microstructure of the second region is deeper than that of the fresnel microstructure of the first region.
3. The projection module of claim 1, wherein the exit surface has diffractive microstructures disposed thereon, the diffractive microstructures being configured to expand the collimated laser light to form a laser pattern.
4. The projection module of claim 3, wherein the diffractive microstructure is a nano-diffractive microstructure and is uniformly distributed on the exit surface; and/or
The Fresnel microstructure is a nano Fresnel microstructure.
5. The projection module of claim 1, further comprising a prism for reflecting the laser light emitted from the light source so that the laser light is incident perpendicularly to the collimating element.
6. The projection module of claim 5, wherein the prism, the collimating element and the diffractive optical element are sequentially disposed along an outgoing light path, the prism includes a reflective surface, the light source includes a light-emitting surface, and the light-emitting surface and the reflective surface are spaced and opposed to each other to form an included angle.
7. The projection module of claim 1, wherein the light source comprises a vertical cavity surface emitter or an edge emitting laser.
8. The projection module of claim 1, wherein the incident surface with the fresnel microstructure is aspheric.
9. An optoelectronic device, comprising:
the projection module of any one of claims 1 to 8, the projection module being configured to emit a laser light pattern towards a target object; and
a camera module for receiving the laser pattern modulated by the target object.
10. An electronic device, characterized in that the electronic device comprises:
a housing; and
the optoelectronic device of claim 9, disposed on the housing to acquire an image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810769554.6A CN110716377A (en) | 2018-07-13 | 2018-07-13 | Projection module, photoelectric device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810769554.6A CN110716377A (en) | 2018-07-13 | 2018-07-13 | Projection module, photoelectric device and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN110716377A true CN110716377A (en) | 2020-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810769554.6A Withdrawn CN110716377A (en) | 2018-07-13 | 2018-07-13 | Projection module, photoelectric device and electronic equipment |
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| CN (1) | CN110716377A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113391498A (en) * | 2021-07-09 | 2021-09-14 | 嘉兴驭光光电科技有限公司 | Laser projection optical device and laser projection module |
| WO2021218826A1 (en) * | 2020-04-30 | 2021-11-04 | 华域视觉科技(上海)有限公司 | Lens unit, optical lens, illumination module, vehicle light, and vehicle |
| CN114002768A (en) * | 2021-10-28 | 2022-02-01 | 江西欧迈斯微电子有限公司 | Optical element, projection module and electronic equipment |
| CN114295082A (en) * | 2021-12-10 | 2022-04-08 | 散裂中子源科学中心 | High-precision detection method for curved wavefront and surface shape based on near-field speckle |
| TWI783409B (en) * | 2021-03-16 | 2022-11-11 | 大陸商廣州立景創新科技有限公司 | Complex diffuser, illumination module and three-dimensional scanning device |
| WO2023000544A1 (en) * | 2021-07-22 | 2023-01-26 | 亿信科技发展有限公司 | Three-dimensional display system |
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2018
- 2018-07-13 CN CN201810769554.6A patent/CN110716377A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021218826A1 (en) * | 2020-04-30 | 2021-11-04 | 华域视觉科技(上海)有限公司 | Lens unit, optical lens, illumination module, vehicle light, and vehicle |
| TWI783409B (en) * | 2021-03-16 | 2022-11-11 | 大陸商廣州立景創新科技有限公司 | Complex diffuser, illumination module and three-dimensional scanning device |
| CN113391498A (en) * | 2021-07-09 | 2021-09-14 | 嘉兴驭光光电科技有限公司 | Laser projection optical device and laser projection module |
| WO2023000544A1 (en) * | 2021-07-22 | 2023-01-26 | 亿信科技发展有限公司 | Three-dimensional display system |
| CN114002768A (en) * | 2021-10-28 | 2022-02-01 | 江西欧迈斯微电子有限公司 | Optical element, projection module and electronic equipment |
| CN114002768B (en) * | 2021-10-28 | 2023-01-13 | 江西欧迈斯微电子有限公司 | Optical element, projection module and electronic equipment |
| CN114295082A (en) * | 2021-12-10 | 2022-04-08 | 散裂中子源科学中心 | High-precision detection method for curved wavefront and surface shape based on near-field speckle |
| CN114295082B (en) * | 2021-12-10 | 2024-01-26 | 散裂中子源科学中心 | Curved surface wavefront and surface shape high-precision detection method based on near-field speckle |
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Address after: 330013 No.698 Tianxiang Avenue, high tech Zone, Nanchang City, Jiangxi Province Applicant after: OFilm Microelectronics Technology Co.,Ltd. Address before: 330013 No.698 Tianxiang Avenue, high tech Zone, Nanchang City, Jiangxi Province Applicant before: NANCHANG OFILM BIO-IDENTIFICATION TECHNOLOGY Co.,Ltd. Address after: 330096 No.699 Tianxiang North Avenue, Nanchang hi tech Industrial Development Zone, Nanchang City, Jiangxi Province Applicant after: Jiangxi OMS Microelectronics Co.,Ltd. Address before: 330013 No.698 Tianxiang Avenue, high tech Zone, Nanchang City, Jiangxi Province Applicant before: OFilm Microelectronics Technology Co.,Ltd. |
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