CN109884849B - Structured light projection device and method for manufacturing the same - Google Patents
Structured light projection device and method for manufacturing the same Download PDFInfo
- Publication number
- CN109884849B CN109884849B CN201711277627.1A CN201711277627A CN109884849B CN 109884849 B CN109884849 B CN 109884849B CN 201711277627 A CN201711277627 A CN 201711277627A CN 109884849 B CN109884849 B CN 109884849B
- Authority
- CN
- China
- Prior art keywords
- laser transmitter
- laser
- structured light
- light projection
- projection apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 24
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 230000003287 optical effect Effects 0.000 claims abstract description 37
- 230000008859 change Effects 0.000 claims abstract description 7
- 230000001788 irregular Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 description 11
- 238000003384 imaging method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
Landscapes
- Measurement Of Optical Distance (AREA)
- Semiconductor Lasers (AREA)
Abstract
The present application provides a structured light projection apparatus comprising: a laser emitter; the collimating lens system is positioned on the light path of the light rays emitted by the laser emitter so as to collimate the light rays emitted by the laser emitter; and a driver for driving the laser transmitter to move and/or rotate along the optical path direction so as to change the position and angle of the laser transmitter relative to the surface of the space object.
Description
Technical Field
The present application relates to a structured light projection apparatus, and more particularly, to an auto-focusing structured light projection apparatus. The application also relates to a method for manufacturing the structured light projection apparatus, a depth camera comprising the structured light projection apparatus and an electronic device comprising the depth camera.
Background
With the development of technology, the technology of depth cameras is also becoming more and more sophisticated (such as better imaging effect), so depth cameras are gradually applied to various electronic devices.
The function of the structured light projection device, which is an important component of the depth camera, is directly affected by the function of the entire depth camera. For example, the effect of the projection of the structured light projection module is poor, so that the imaging quality of the whole depth camera is poor. However, if the projection effect of the structured light projection module is enhanced, the structured light converged to the human eye may cause damage to the human eye. The form of convergence of the structured light that can be projected onto the surface of the spatial target is limited, which affects the projection range of the structured light projection module. In addition, because different focusing depth of field is needed for different distances, otherwise, too large light spots can interfere with each other, and an accurate identification effect cannot be ensured, so that the current structure light projection device is of a fixed structure, namely, when in use, optical parameters such as a focus and the like cannot change, and the shooting distance of a depth camera is a fixed range (similar to the depth of field). If the space target exceeds the range, the structured light projection device cannot ensure the quality of the structured light projected on the surface of the space target, so that the imaging effect of the depth camera is poor. In other words, the size, brightness, etc. of the light spot projected on the surface of the space target in the range meets the receiving requirement, but once the light spot exceeds the range, the projection effect is not easy to be identified or can not be identified, and can not be received or identified by the receiving module (i.e. after the light spot exceeds the range, the light spot can not be received and identified by the receiving module due to overlarge light spot), thereby affecting the imaging effect and the imaging quality of the depth camera.
As a result, more of the existing depth cameras are provided at the front end of the electronic device (e.g., front-facing camera), so that only close-range imaging can be provided. However, with the development of the market, short-range shooting imaging is difficult to meet the demand, and thus a depth camera that increases the shooting distance without affecting the imaging effect is urgently needed.
Disclosure of Invention
On the basis of the above, the application proposes to design the structured light projection device as a structured light projection device capable of automatically focusing, namely, the projection range of the structured light projection device is enlarged (namely, the distance is increased) by adjusting the position, the angle and other parameters of the laser emitter, so that the shooting distance of the whole depth camera is increased. According to the automatic focusing structured light projection device provided by the application, the size, the light intensity and the like of the structured light spot projected by the structured light projection device can be adjusted through an algorithm, and the requirement is met even in a long distance, so that the shooting distance can be increased.
According to one aspect of the present application, a structured light projection apparatus is provided. The structured light projection device includes: a laser emitter; the collimating lens system is positioned on the light path of the light rays emitted by the laser emitter so as to collimate the light rays emitted by the laser emitter; and a driver for driving the laser transmitter to move and/or rotate along the optical path direction so as to change the position and angle of the laser transmitter relative to the surface of the space object.
According to an exemplary embodiment of the present application, the structured light projection apparatus may further comprise a diffractive optical element located at a side of the collimating lens system remote from the laser transmitter to project light rays passing through the collimating lens system to a surface of the spatial target.
According to an exemplary embodiment of the present application, the structured light projection apparatus may further comprise a wiring board electrically connected to the laser transmitter, which wiring board may be used to carry the laser transmitter.
According to an exemplary embodiment of the present application, the driver may drive the wiring board to move together with the laser emitter along the optical path direction or to rotate together at an angle with respect to the optical path direction.
According to an exemplary embodiment of the present application, the driver may be in direct contact with the laser transmitter to drive the laser transmitter to move along the optical path direction and/or to rotate at an angle with respect to the optical path direction.
According to an exemplary embodiment of the present application, the laser transmitter may be electrically connected to the wiring board through a flexible wire.
According to an exemplary embodiment of the present application, the laser transmitter may comprise a plurality of laser emitting sources arranged in an array.
According to an exemplary embodiment of the present application, the structured light projection apparatus may further comprise a plurality of drivers for driving the plurality of laser light emitting sources, respectively.
According to an embodiment of the present application, the diffractive optic may comprise a diffractive layer. The diffraction layer may split light.
According to an embodiment of the application, the diffractive optic may further comprise an irregular speckle layer. The irregular speckle layer may have an irregular speckle pattern.
According to another aspect of the application, a method for manufacturing a structured light projection device is provided. The method may include: providing a laser transmitter; a collimating lens system is arranged on the light path of the light rays emitted by the laser emitter and is used for collimating the light rays emitted by the laser emitter; and a driver arranged adjacent to the laser transmitter for driving the laser transmitter to move and/or rotate along the optical path direction, thereby adjusting the size of the structural light spot projected on the surface of the space object.
According to an exemplary embodiment of the application, the method may further comprise providing a diffractive optical element on a side of the collimator lens system remote from the laser transmitter for projecting the light rays passing through the collimator lens system to a surface of the spatial target.
According to an exemplary embodiment of the present application, the method may further comprise electrically connecting the wiring board to the laser transmitter. The circuit board may be used to carry a laser transmitter.
According to an exemplary embodiment of the application, the method may further comprise driving the circuit board together with the laser transmitter to move along the optical path direction or together to rotate at an angle with respect to the optical path direction.
According to an exemplary embodiment of the application, the method may further comprise driving the laser transmitter to move along the optical path direction and/or to rotate at an angle with respect to the optical path direction.
According to an exemplary embodiment of the application, the method may further comprise electrically connecting the laser transmitter to the wiring board, for example by means of flexible wires.
According to an exemplary embodiment of the present application, the method may further comprise arranging a plurality of laser emission sources in an array to constitute a laser emitter.
According to an exemplary embodiment of the present application, the method may further include driving each of the plurality of laser emission sources separately by a separate driver.
According to yet another aspect of the present application, a depth camera is provided. The depth camera may include a structured light projection device as described above, and a receiving module. The receiving module can be a zooming module or a focusing module, and the depth of field of the receiving module is larger than or equal to the projection range of the structured light projection device. In addition, the depth camera may further include an RGB module.
According to still another aspect of the present application, there is also provided an electronic device including the depth camera described above.
Drawings
The principles of the inventive concept are explained below by describing exemplary embodiments of the present application with reference to the attached drawings. It is to be understood that the drawings are intended to illustrate exemplary embodiments of the application, and not to limit it. Wherein the accompanying drawings are included to provide a further understanding of the concepts of the application and are incorporated in and constitute a part of this specification. Like reference numerals in the drawings denote like features. In the drawings:
FIG. 1 shows a schematic diagram of a structured light projection apparatus according to an exemplary embodiment of the present application;
FIGS. 2A-2C show schematic diagrams of a DOE diffracted (split) beam after collimation by a collimating lens system;
FIG. 3 shows a schematic view of a structured light projection apparatus according to another exemplary embodiment of the present application;
Fig. 4 shows a schematic view of a structured light projection device according to another exemplary embodiment of the application
FIG. 5 shows a schematic view of a laser transmitter of a structured light projection apparatus according to an exemplary embodiment of the present application;
FIG. 6 illustrates a cross-sectional view taken along line A-A in FIG. 3 in accordance with an exemplary embodiment of the present application; and
Fig. 7 shows a schematic flow chart for manufacturing a structured light projection apparatus according to an exemplary embodiment of the application.
Detailed Description
For a better understanding of the application, various aspects of the application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the application and is not intended to limit the scope of the application in any way.
The terminology used herein is for the purpose of describing particular example embodiments and is not intended to be limiting. The terms "comprises," "comprising," "includes," "including," and/or "having," when used in this specification, specify the presence of stated features, integers, elements, components, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, elements, components, and/or groups thereof.
The description herein refers to schematic diagrams of exemplary embodiments. The exemplary embodiments disclosed herein should not be construed as limited to the particular shapes and dimensions shown, but are to include various equivalent structures capable of performing the same function, as well as deviations in shapes and dimensions that result, for example, from manufacturing. The positions shown in the drawings are schematic in nature and are not intended to limit the positions of the components.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Various aspects of the application are described in greater detail below with reference to the accompanying drawings.
Fig. 1 shows a schematic view of a structured light projection apparatus 100 according to an exemplary embodiment of the application. Structured light projection device 100 may include a laser emitter (VCSEL) 11, a collimating lens system 12, and a Diffractive Optical Element (DOE) 13. As shown in fig. 1, a collimating lens system 12 may be positioned in the optical path L of the light emitted by the laser emitter 11 to collimate the light emitted by the laser emitter 11. The diffractive optical element 13 may be located on a side of the collimating lens system 12 remote from the laser transmitter 11 to split and project the light rays passing through the collimating lens system 12 to the surface of the spatial target. In use, the laser transmitter 11 emits light which is then collimated by the collimating lens system 12, then split by the diffractive optical element 13 and projected onto the surface of a spatial target.
As shown in fig. 1, the structured light projection apparatus 100 may further comprise a structural support 10 and a driver 14. The structural support 10 may be used to provide support for a collimating lens system 12 and a Diffractive Optical Element (DOE) 13. The driver 14 may drive the laser transmitter 11 to move along the optical path direction L and/or to rotate at an angle with respect to the optical path direction L, thereby changing parameters such as the relative position and angle of the laser transmitter 11 of the structured light projection apparatus 100 to the spatial target, such that the size, light intensity, etc. of the structured light spot projected on the surface of the spatial target is correspondingly changed. For example, in an application, features of a spatial target may be identified in advance, and if the spatial target is identified as a human eye, light rays are not converged; if there is no spatial target that needs to be avoided, the focal depth can be adjusted by changing the relative distance and relative angle of the laser transmitter 11 of the structured light projection apparatus 100 to the spatial target, etc., so that the light is converged. In the embodiment of the present application, the laser emitter 11 of the auto-focusing structured light projection apparatus 100 may be moved, that is, the laser emitter 11 may be moved along the optical path direction under the action of the driver 14, so that the projection of the structured light may meet the requirement, that is, the spot size, the light intensity, etc. of the structured light projected on the surface of the spatial target may be accurately identified.
As shown in fig. 2A-2C, in theory, after the light emitted by the laser emitter 11 is collimated by the collimating lens system 12, the beams diffracted (split) by the DOE should be parallel to each other, that is, the sizes of the light spots at any position in space are consistent (as shown in fig. 2A), but due to errors in the manufacturing process of the optical components, the beams cannot be parallel (as shown in fig. 2B), so that the light spot sizes will change, and the light spot sizes will affect the reception of the receiving module. Typically, the depth of focus of the entire projection device can be adjusted by adjusting the distance and relative angle of the collimating lens system 12 and the laser transmitter 11. Here, the focal depth may be interpreted as a range in which the light beam can be accurately recognized by the receiving module after being diffracted by the DOE. For example, as shown in fig. 2B, the depth of focus may be shown as the range between L1 and L2 in fig. 2B. For example, but not limiting of, the focal depth may be a size, a density, a light intensity, etc. of a light spot between L1 and L2 that may be well received and identified by the receiving module. In the present application, as shown in fig. 2C, the shooting distance is changed by moving the laser emitter 11 such that the distance between the collimator lens system 12 and the laser emitter 11 is changed, thereby changing the position of the focal depth. It should be understood, however, that for ease of illustration, only one light beam (from one light source on a VCSEL) is shown in fig. 2, in actual use there are many light sources or multiple VCSEL arrays on a VCSEL, and each VCSEL has multiple light sources.
As described above, the laser emitter 11 is movable along the optical path direction L. The movement of the laser emitter 11 can be controlled by an algorithm, and accurate movement is realized by the algorithm according to the position feedback of the spatial target, so that the projection effect is better.
In an exemplary embodiment, the driver 14 may be a motor or the like of a smaller size.
Referring again to fig. 1, structured light projection device 100 may also include a wiring board 15 electrically connected to laser transmitter 11 to control the state of laser transmitter 11. Typically, the positive electrode of the laser transmitter 11 is connected to the circuit board by a wire, while the negative electrode is directly disposed on the circuit board. The laser transmitter 11 of the present application may be configured to move with the circuit board because the wires are brittle and thus subject to alternating stresses. However, the metal wire may be upgraded, for example, a wire made of silicon material is coated with conductive metal on the surface for connection, so that the driver 14 may directly drive the laser emitter 11 to move. Only an exemplary manner of connecting the laser transmitter 11 to the circuit board 15 is shown above, it being understood that the laser transmitter 11 may be electrically connectable to the circuit board 15 in any suitable manner, for example, using flexible wires or the like.
Fig. 3 shows a schematic view of a structured light projection apparatus 100 according to another exemplary embodiment of the application. In the embodiment shown in fig. 3, both the positive and negative poles of the laser transmitter 11 are connected to the circuit board with electrical signal connections, such as flexible wires, to allow the driver to drive only the laser transmitter 11 for movement.
Fig. 3 shows a schematic view of a structured light projection apparatus 100 according to another exemplary embodiment of the application. In the embodiment shown in fig. 4, the Diffractive Optical Element (DOE) 13 includes a diffraction layer 131 and an irregular speckle layer 132. The diffraction layer 131 serves to diffract light, i.e., split the light into bundles.
In conventional structured light projection devices, an irregular speckle pattern is typically designed in the laser transmitter 11, resulting in a complex structure of the laser transmitter 11. In this embodiment, the irregular speckle layer 132 has an irregular speckle pattern, so that the laser transmitter 11 does not need to be provided with the irregular speckle pattern, thereby simplifying the structure of the laser transmitter 11 and reducing the design difficulty of the laser transmitter 11.
According to another exemplary embodiment of the present application, the driver 14 may also drive the laser transmitter 11 to rotate at an angle with respect to the optical path direction L, so that the structured light projection may be made to meet the requirements, i.e. the structured light spot size projected on the spatial target surface. For example, the laser transmitter 11 may be rotated by driving the drivers 14 on each side of the laser transmitter 11 at different speeds, respectively. But the laser transmitter 11 may be driven in rotation in other suitable ways, such as by a particular rotation mechanism.
Fig. 5 shows an exemplary arrangement of the laser emission source 101 on the laser emitter 11 according to an embodiment of the present application. As shown in fig. 5, a plurality of laser emission sources 101 may be arranged in an array to form a laser emitter 11 of a desired size. It should be understood that the arrangement of the laser light emitting sources 101 shown in fig. 5 is only one example, and is not limiting to the shape and size of the laser light emitters 11. It will be appreciated by those skilled in the art that the arrangement, size, number, etc. of the laser emitting sources 101 may be adjusted according to actual needs.
Fig. 6 illustrates a cross-sectional view taken along line A-A in fig. 3 according to an exemplary embodiment of the present application. As shown in fig. 6, each of the plurality of laser emission sources 101 in the laser emitter 11 may be individually driven by using a separate driver to more flexibly adjust the position, angle, etc. of the laser emitter 11 with respect to the spatial target.
In the application, the projection range of the structured light is larger by changing the parameters such as the position, the distance, the angle and the like of the structured light projection device relative to the space target, so that the projection effect can not be influenced under the condition of increasing the projection distance.
Fig. 7 shows a schematic flow chart of a method 1000 for manufacturing a structured light projection device according to an exemplary embodiment of the application. To manufacture a structured light projection apparatus as described above, first, a laser emitter is provided as required according to actual needs (step S1001). Then, a collimating lens system may be disposed on the optical path of the light emitted from the laser transmitter to collimate the light emitted from the laser transmitter (step S1002). In the next step S1003, a diffractive optical element is disposed on a side of the collimator lens system remote from the laser emitter, so that the light rays passing through the collimator lens system are split and projected onto the surface of the spatial target. The method may further comprise providing a driver adjacent to the laser transmitter to drive the laser transmitter to move and/or rotate in the direction of the optical path to change the position and angle of the laser transmitter relative to the surface of the spatial target to adjust the projection range. (S1004).
According to an exemplary embodiment of the present application, a depth camera including the above structured light projection apparatus 100 and a receiving module may also be provided. The structured light projection device 100 and the receiving module may be connected to a processor. The receiving module can be an auto-focusing (zooming) module or a fixed focus module. It can be understood that the range variation of the projected structured light does not affect the effect of the receiving module, that is, the depth of field of the receiving module should be greater than or equal to the projection range of the structured light projection device. In some implementations, the depth camera may also include an RGB module. In addition, an electronic device including the depth camera may be provided, such as, but not limited to, a smart phone, a tachograph, a tablet computer, a wearable device, and the like.
Exemplary embodiments of the present application are described above with reference to the accompanying drawings. It will be appreciated by persons skilled in the art that the above embodiments have been described by way of example only and are not intended to limit the scope of the application. The scope of the application is to be given the full breadth of the appended claims and any and all equivalents thereof, including any combination of features thereof. Any modifications, equivalents, and so forth that come within the teachings of the application and the scope of the claims are intended to be included within the scope of the application as claimed.
Claims (23)
1. A structured light projection device comprising:
A laser emitter;
The collimating lens system is positioned on the light path of the light rays emitted by the laser emitter so as to collimate the light rays emitted by the laser emitter;
The driver drives the laser emitter to move and rotate along the light path direction so as to change the position and angle of the laser emitter relative to the surface of the space target, so that the light rays are converged to adjust the focal depth of the structure light projection device;
a diffractive optical element located on a side of the collimating lens system remote from the laser transmitter to project light rays passing through the collimating lens system to a surface of the spatial target; and
A circuit board electrically connected with the laser emitter,
Wherein the driver drives the laser transmitter to move together with the circuit board; and
The drivers on each side of the laser transmitter drive the laser transmitter at different speeds, causing the laser transmitter to rotate.
2. The structured light projection apparatus of claim 1 wherein said structured light projection apparatus further comprises:
the circuit board carries the laser transmitter.
3. The structured light projection apparatus of claim 2 wherein said driver drives said wiring board together with said laser emitter to move along said light path direction.
4. The structured light projection apparatus of claim 2 wherein said driver drives said wiring board together with said laser transmitter to rotate at an angle with respect to said optical path direction.
5. The structured light projection apparatus of claim 2 wherein,
The laser transmitter is electrically connected with the circuit board through a flexible wire.
6. The structured light projection apparatus of claim 5 wherein said driver is in direct contact with said laser transmitter to drive said laser transmitter to move along said optical path.
7. The structured light projection apparatus of claim 5 wherein said driver is in direct contact with said laser transmitter to drive said laser transmitter to rotate at an angle relative to said optical path direction.
8. The structured light projection apparatus of any one of claims 1 to 7 wherein said laser transmitter comprises a plurality of laser emitting sources arranged in an array.
9. The structured light projection apparatus of claim 8 wherein said structured light projection apparatus comprises a plurality of drivers to drive said plurality of laser light emitting sources respectively.
10. The structured light projection apparatus of claim 1 wherein said diffractive optical element comprises a diffractive layer that splits said light rays.
11. The structured light projection apparatus of claim 10 wherein said diffractive optical element further comprises an irregular speckle layer having an irregular speckle pattern.
12. A method for manufacturing a structured light projection device, comprising:
Providing a laser transmitter;
a collimating lens system is arranged on the light path of the light rays emitted by the laser emitter and is used for collimating the light rays emitted by the laser emitter;
a driver is arranged adjacent to the laser transmitter and used for driving the laser transmitter to move and rotate along the optical path direction so as to change the position and angle of the laser transmitter relative to the surface of a space target, so that the light rays are converged to adjust the focal depth of the structure light projection device;
Providing a diffractive optical element on a side of the collimating lens system remote from the laser transmitter for projecting light rays passing through the collimating lens system to a surface of the spatial target; and
A wiring board is electrically connected to the laser transmitter,
Wherein, drive the said laser emitter and said circuit board to move together; and
The drivers on each side of the laser transmitter are driven at different speeds to rotate the laser transmitter.
13. The method of claim 12, further comprising:
the circuit board carries the laser transmitter.
14. The method of claim 13, further comprising:
The circuit board and the laser transmitter are driven to move along the light path direction.
15. The method of claim 13, further comprising:
The circuit board and the laser transmitter are driven to rotate together at an angle relative to the direction of the light path.
16. The method of claim 13, further comprising:
The laser transmitter is driven to move along the direction of the light path.
17. The method of claim 13, further comprising:
The laser transmitter is driven to rotate at an angle relative to the direction of the light path.
18. The method of claim 16, further comprising:
the laser transmitter is electrically connected to the wiring board by flexible wires.
19. The method of claim 17, further comprising:
the laser transmitter is electrically connected to the wiring board by flexible wires.
20. The method of any one of claims 12 to 19, wherein the laser transmitter comprises a plurality of laser transmitting sources arranged in an array.
21. The method of claim 20, further comprising:
Each of the plurality of laser emission sources is driven by a separate driver.
22. A depth camera, comprising:
The structured light projection apparatus according to any one of claims 1 to 11, and
The receiving module is a zooming module or a focusing module, and the depth of field of the receiving module is larger than or equal to the projection range of the structured light projection device.
23. An electronic device comprising the depth camera of claim 22.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711277627.1A CN109884849B (en) | 2017-12-06 | 2017-12-06 | Structured light projection device and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711277627.1A CN109884849B (en) | 2017-12-06 | 2017-12-06 | Structured light projection device and method for manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109884849A CN109884849A (en) | 2019-06-14 |
| CN109884849B true CN109884849B (en) | 2024-05-10 |
Family
ID=66923895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711277627.1A Active CN109884849B (en) | 2017-12-06 | 2017-12-06 | Structured light projection device and method for manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109884849B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112945520B (en) * | 2019-12-11 | 2023-07-04 | 余姚舜宇智能光学技术有限公司 | Projector assembling apparatus and assembling method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101878409A (en) * | 2007-10-02 | 2010-11-03 | 双镜头公司 | Laser beam pattern projector |
| CN106767529A (en) * | 2016-12-14 | 2017-05-31 | 深圳奥比中光科技有限公司 | Laser facula identification and the automatic focusing method and system of laser-projector |
| US9703016B1 (en) * | 2016-02-26 | 2017-07-11 | Everready Precision Ind. Corp. | Structured light generation module |
| CN107026392A (en) * | 2017-05-15 | 2017-08-08 | 深圳奥比中光科技有限公司 | Vcsel array light source |
| CN207764540U (en) * | 2017-12-06 | 2018-08-24 | 宁波舜宇光电信息有限公司 | Structured light projecting device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110188054A1 (en) * | 2010-02-02 | 2011-08-04 | Primesense Ltd | Integrated photonics module for optical projection |
| US20170131560A1 (en) * | 2014-11-14 | 2017-05-11 | Ahead Optoelectronics, Inc. | Diffractive optical element and laser diode-doe module |
| US9553423B2 (en) * | 2015-02-27 | 2017-01-24 | Princeton Optronics Inc. | Miniature structured light illuminator |
| CN108604053B (en) * | 2015-10-21 | 2021-11-02 | 普林斯顿光电子股份有限公司 | Coding pattern projector |
| US10007994B2 (en) * | 2015-12-26 | 2018-06-26 | Intel Corporation | Stereodepth camera using VCSEL projector with controlled projection lens |
-
2017
- 2017-12-06 CN CN201711277627.1A patent/CN109884849B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101878409A (en) * | 2007-10-02 | 2010-11-03 | 双镜头公司 | Laser beam pattern projector |
| US9703016B1 (en) * | 2016-02-26 | 2017-07-11 | Everready Precision Ind. Corp. | Structured light generation module |
| CN106767529A (en) * | 2016-12-14 | 2017-05-31 | 深圳奥比中光科技有限公司 | Laser facula identification and the automatic focusing method and system of laser-projector |
| CN107026392A (en) * | 2017-05-15 | 2017-08-08 | 深圳奥比中光科技有限公司 | Vcsel array light source |
| CN207764540U (en) * | 2017-12-06 | 2018-08-24 | 宁波舜宇光电信息有限公司 | Structured light projecting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109884849A (en) | 2019-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108333859B (en) | Structured light projection device and depth camera for depth image imaging method based on depth camera | |
| US11095365B2 (en) | Wide-angle illuminator module | |
| KR101687994B1 (en) | LIDAR light-emitting system | |
| EP3786707B1 (en) | Projection module and terminal | |
| US11442147B2 (en) | Transmitter unit and lidar device for scanning a scanning region | |
| US11873988B2 (en) | Light shaping assembly having light sources mounted on a PCB via supporting pins bent for orienting light toward a projector lens | |
| CN112379528A (en) | Transmission module, image capturing module and electronic equipment | |
| JP2017531281A (en) | Small lighting system | |
| CN109884849B (en) | Structured light projection device and method for manufacturing the same | |
| JP2020155403A (en) | Light source device, detection device and electronic apparatus | |
| CN114428437A (en) | 3D projector and electronic equipment that structured light and floodlight illumination closed and put | |
| CN207764540U (en) | Structured light projecting device | |
| CN113466884A (en) | Time-of-flight depth measurement transmitting device and electronic equipment | |
| CN220171253U (en) | 3D module and electronic equipment | |
| CN114502985A (en) | Emitting device for flight time depth detection and electronic equipment | |
| CN110471192B (en) | Projection device, diffractive optical element, method for manufacturing the same, and electronic apparatus with projection device | |
| US20210389654A1 (en) | Projection module, imaging device, and electronic device | |
| US20160223913A1 (en) | Exposure device and lighting unit | |
| CN214846079U (en) | Transmission module, image capturing module and electronic equipment | |
| CN219302667U (en) | Laser projection module and depth camera | |
| KR20200086815A (en) | Camera Module | |
| KR101828882B1 (en) | Light Glancing Angle Adjustable Floodlight | |
| CN215006099U (en) | Laser emitter and terminal equipment | |
| US10886689B2 (en) | Structured light sensing assembly | |
| KR20220015133A (en) | Distance measuring camera |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |