CN115437162A - Laser projector, camera assembly and electronic device - Google Patents
Laser projector, camera assembly and electronic device Download PDFInfo
- Publication number
- CN115437162A CN115437162A CN202211003218.3A CN202211003218A CN115437162A CN 115437162 A CN115437162 A CN 115437162A CN 202211003218 A CN202211003218 A CN 202211003218A CN 115437162 A CN115437162 A CN 115437162A
- Authority
- CN
- China
- Prior art keywords
- light
- laser
- emitting
- laser projector
- emitting part
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 59
- 238000012806 monitoring device Methods 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 5
- 230000000737 periodic effect Effects 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 239000000758 substrate Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Images
Classifications
-
- 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
- G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
- G02B27/4205—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having a diffractive optical element [DOE] contributing to image formation, e.g. whereby modulation transfer function MTF or optical aberrations are relevant
-
- 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
- G02B27/30—Collimators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/30—Transforming light or analogous information into electric information
- H04N5/33—Transforming infrared radiation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Projection Apparatus (AREA)
- Semiconductor Lasers (AREA)
Abstract
The application provides a laser projector, a camera assembly and an electronic device. The laser projector includes a laser light source assembly including a laser light source emitting a first wavelength λ 1 And emitting a second wavelength lambda 2 The second light emitting portion of the laser of (1), wherein the second light emitting portion includes two portions located on both sides of the first light emitting portion; a collimating mirror; a diffractive optical element; and the control component is used for controlling the first light-emitting part and the second light-emitting part to emit light at different moments. Wherein the length of the first light-emitting part is L 1 Width of H 1 . Each of the two parts of the second light-emitting part has a length L 2 Width of H 2 The two parts being lengthwiseA distance of L 2 2N times. The laser projector is configured to satisfy the following relationship:
wherein f is the focal length of the collimating mirror.
Description
Technical Field
The application relates to the technical field of imaging, in particular to a laser projector, a camera assembly with the laser projector and an electronic device with the laser projector.
Background
At present, a Vertical-Cavity Surface-Emitting Laser (VCSEL) array is mostly used as a light source in a structured light projector, and a Laser pattern can be formed after a light beam emitted from the VCSEL array passes through a Diffraction Optical Element (DOE) for imaging.
Infrared cameras are often used for day and night surveillance, and their concealment makes it possible to obtain the most realistic image data, video evidence or real-time surveillance pictures.
The infrared camera can receive infrared rays with the wavelength of 830nm-960nm. Generally, the use of infrared light of shorter wavelength can enhance the image capturing ability of the camera, but can produce a red storm phenomenon, especially at night, which can reduce the concealment of the camera by emitting visible red light. The use of longer wavelength infrared is effective in avoiding this problem, but at the expense of camera clarity.
Accordingly, there is a need to provide a laser projector, and camera assembly and electronic device having the same, to at least partially address the above-mentioned problems.
Disclosure of Invention
In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the application is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
A first aspect of the application provides a laser projector comprising:
the laser light source assembly is used for emitting laser light, the laser light comprises first laser light and second laser light, the wavelength of the first laser light is a first wavelength, the wavelength of the second laser light is a second wavelength, the laser light source assembly comprises a first light emitting part used for emitting the first laser light and a second light emitting part used for emitting the second laser light, the first wavelength is not equal to the second wavelength, the second light emitting part comprises two parts which are spaced from each other along the length direction, and the two parts are respectively positioned on two sides of the first light emitting part;
a collimating mirror for collimating the laser light;
a diffractive optical element for diffracting the laser light to form a projection pattern; and
a control assembly coupled to the laser light source assembly for controlling the first and second light-emitting portions to be capable of emitting light at different times,
wherein,
the first light-emitting part has a dimension L in the longitudinal direction 1 A dimension in the width direction of H 1 ，
A dimension of each of the two portions of the second light emitting part in the length direction is L 2 A dimension in the width direction of H 2 The distance between the two parts along the length direction is L 2 2N times of (a), wherein N is a positive integer,
the laser projector is configured such that the sizes of the first and second light-emitting portions satisfy the following relationship:
wherein f is the focal length of the collimating mirror, and lambda 1 Is said first wavelength, λ 2 For the second wavelength, the width direction is perpendicular to the length direction, the width direction is perpendicular to the optical axis of the collimating mirror, and the length direction is perpendicular to the optical axis of the collimating mirror.
In this application, the laser projector employs two laser light sources with different wavelengths, which can emit light at different times. By limiting the arrangement mode and the size relation of the two laser light sources, the laser projector can project speckle lattices with two wavelengths by using the same diffractive optical element.
Optionally, the optical axis of the first light emitting portion of the laser projector is offset from the optical axis of the collimating mirror by no more than 5 μm, and the optical axis of the second light emitting portion is offset from the optical axis of the collimating mirror by no more than 5 μm.
According to the application, since L 1 、H 1 、L 2 、H 2 Is much smaller than the focal length f of the collimator lens (i.e., the distance from the laser optical assembly to the collimator lens), slight deviations of the optical axes of the first and second light-emitting portions from the optical axis of the collimator lens will only correspond to "arctan (H) in the above equation 1 /2 f) "and" arctan (L) 1 The value of/2 f) "is changed extremely slightly, and in practical use, the change is negligible, and the projection effect is not affected, so that two laser light sources can share the same diffractive optical element.
Optionally, the first and second light emitting portions of the laser projector have an unequal gap.
Or alternatively, the first and second light-emitting portions of the laser projector are equally spaced.
According to the present application, the first light-emitting portion and the second light-emitting portion may be provided symmetrically or asymmetrically, and the configuration is flexible.
Optionally, the laser light source assembly of the laser projector is configured in a 180 degree radiation symmetric configuration.
Furthermore, the distance between the optical axis of the collimating mirror of the laser projector and the symmetry axis of the laser light source component is not more than 5 μm.
In the present application, since L 1 、H 1 、L 2 、H 2 Is much smaller than the focal length f of the collimating mirror (i.e., the distance from the laser optical assembly to the collimating mirror), so that a slight deviation of the optical axis of the laser light source assembly from the optical axis of the collimating mirror will only be found for "arctan (H) in the above equation 1 2 f) "and" arctan (L) 1 The value of/2 f) "produces an extremely slight change which is negligible in practical applications and does not affect the projection effect. That is, the laser light source component can be allowed to slightly deviate from the optical axis arrangement of the collimating mirror, and the process precision requirement of manufacturing is reduced.
Alternatively, in the above relational expression, N is any one of 1, 2, and 3.
In the application, the value of N is limited, the two parts of the second light-emitting part are prevented from being spaced too far away from each other, and the fact that each part of the second light-emitting part is also prevented from being too far away from the optical axis of the collimating mirror to a certain extent is avoided, so that the collimating effect of the collimating mirror on the laser emitted by the two parts of the second light-emitting part is guaranteed. Meanwhile, in the case of realizing the same angle of view of the projection light, when the value of N is small, the order of the diffractive optical element is less, so that the design and the processing of the diffractive optical element are easier.
Optionally, the laser projector according to any of the above technical solutions, wherein one of the first wavelength and the second wavelength is 840nm to 860nm, and the other of the first wavelength and the second wavelength is 930nm to 950nm.
In the application, the laser radiation with the wavelength of 840mm to 860nm is high in intensity and high in brightness; the red burst phenomenon of the laser with the wavelength of 930nm to 950nm is not obvious, so that the laser projector can be applied to two different use scenes according to the characteristics of the laser with two wavelengths.
Optionally, the control assembly of the laser projector controls one of the first and second light emitting parts to emit the laser light according to a user instruction; or the laser projector further comprises a light-sensitive sensor for sensing ambient brightness, the light-sensitive sensor is coupled to the control component, and the control component controls one of the first light-emitting part and the second light-emitting part to emit the laser according to time information and/or ambient brightness information.
In this application, to the start-stop and the switching of the first laser and the second laser of laser light source subassembly transmission, control assembly can realize manual control according to user's instruction, also can realize automatic control according to ambient brightness and/or time information to satisfy the user demand of laser projector at daytime and night.
A second aspect of the present application provides a camera assembly comprising:
the laser projector of any of the above aspects of the present application;
an image collector for collecting a laser image formed by the projection pattern of the laser projector; and
a processor for processing the laser image to obtain a depth image.
In this application, the camera subassembly adopts two kinds of laser source that the wavelength is different, and two kinds of laser source can give out light at different moments. By limiting the arrangement mode and the size relation of the two laser light sources, the effect that the laser projector of the camera assembly projects speckle lattices with two wavelengths by using the same diffractive optical element is achieved.
Optionally, the processor of the camera assembly comprises the control assembly.
In this application, camera assembly compact structure.
A third aspect of the present application provides an electronic device, comprising:
a housing; and
the camera assembly of any of the above aspects of the present application, the camera assembly being disposed to and exposed from the housing to obtain a depth image.
In the present application, the electronic device employs two laser light sources with different wavelengths, and the two laser light sources can emit light at different times. By limiting the arrangement mode and the size relation of the two laser light sources, the laser projector of the electronic device can project speckle lattices with two wavelengths by using the same diffractive optical element.
Optionally, the electronic device is a monitoring device.
In this application, the monitoring device emits diffracted laser light of different wavelengths at different times, so that a red storm phenomenon can be avoided by selecting the wavelength range of the laser light.
Drawings
The following drawings of the present application are included to provide an understanding of the present application. The drawings illustrate embodiments of the application and, together with the description, serve to explain the principles of the application. In the drawings:
FIG. 1 is a schematic exterior view of a laser projector according to a preferred embodiment of the present application;
FIG. 2 is an exploded view of the laser projector shown in FIG. 1;
FIG. 3 is a schematic optical path diagram of the laser projector shown in FIG. 1;
fig. 4 to 6 are schematic top views of the laser light source assembly in fig. 3.
Description of reference numerals:
10: laser projector
11: substrate
20: support frame
21: protective cover
22: collimating lens
30: diffractive optical element
50: laser light source assembly
51: a first light emitting part
52: the second light emitting part
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present application. It will be apparent, however, to one skilled in the art, that the present application may be practiced without one or more of these specific details. In other instances, well-known features of the art have not been described in order to avoid obscuring the present application.
In the following description, a detailed description will be given in order to thoroughly understand the present application. It should be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art. It is apparent that the implementation of the embodiments of the present application is not limited to the specific details familiar to those skilled in the art. The following detailed description of the preferred embodiments of the present application, however, the present application may have other embodiments in addition to these detailed descriptions.
It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Ordinal words such as "first" and "second" are referred to in this application as labels only, and do not have any other meaning, such as a particular order, etc. Also, for example, the term "first component" does not itself imply the presence of "second component", and the term "second component" does not itself imply the presence of "first component".
Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, in a preferred embodiment of the present application, the laser projector 10 includes a collimating mirror 22, a diffractive optical element 30, a laser light source assembly 50, and a control assembly (not shown).
The laser light source assembly 50 is for emitting laser light. It will be appreciated that the laser light emitted by the laser light source assembly 50 has lightA beam path and an optical axis. Wherein the laser comprises a first laser and a second laser. The wavelength of the first laser is a first wavelength lambda 1 The wavelength of the second laser is a second wavelength lambda 2 . The laser light source assembly 50 includes a first light emitting portion 51 and a second light emitting portion 52. The first light-emitting portion 51 and the second light-emitting portion 52 are arranged on the substrate 11, close to or in contact with each other. The first light-emitting part 51 is used for emitting light with a first wavelength lambda 1 The second light emitting part 52 for emitting the laser light having the second wavelength λ 2 The laser of (1). Preferably, the first wavelength λ 1 And a second wavelength lambda 2 840nm to 860nm, for example 850nm; first wavelength lambda 1 And a second wavelength lambda 2 Of 930nm to 950nm, for example 940nm.
The diffractive optical element 30 serves to diffract the laser light emitted by the laser light source assembly 50 to form a projection pattern. The diffractive optical element 30 is arranged on the holder 20, for example, parallel to the substrate 11 (the holder 20 is provided to the substrate 11). It will be appreciated that the diffractive optical element 30 has an optical axis.
A collimator lens 22 is provided to the holder 20, for example, for collimating the laser light with a focal length f. It will be appreciated that the collimator 22 has an optical axis. Preferably, the collimator lens 22 is arranged with its optical axis coinciding with the optical axis of the diffractive optical element 30.
The control assembly is coupled to the laser light source assembly 50 for controlling the first light-emitting portion 51 and the second light-emitting portion 52 to be capable of emitting light at different times. For example, the control component is coupled to the first and second light-emitting portions 51 and 52, respectively, and controls the first and second light-emitting portions 51 and 52 to be capable of emitting light at different times. Thus, the laser projector 10 can respectively project the laser beams with the first wavelength λ 1 Of a second wavelength lambda 2 The laser of (1). So that the laser projector 10 can select the wavelength of the laser light as desired.
For example, the control component controls one of the first light-emitting portion 51 and the second light-emitting portion 52 to emit laser light according to a user instruction. Or the laser projector 10 may also include a light sensor for sensing ambient light. The light sensor is coupled to a control assembly which controls one of the first and second light emitting parts 51 and 52 to emit laser light according to time information and/or ambient brightness information. For example, the emission of laser light having a wavelength of 840nm to 860nm may be controlled in the case of daytime or ambient light is high, and the emission of laser light having a wavelength of 930nm to 950nm may be controlled in the case of night or ambient light is low, so that the red storm phenomenon may be prevented. For example, when the laser projector 10 is used to monitor an apparatus, the monitoring apparatus may be hidden.
Preferably, the laser projector 10 further comprises a protective cover 21. The protective cover 21 is provided to the holder 20. The protective cover 21 and the laser light source unit 50 are respectively located on both sides of the diffractive optical element 30 in the extending direction of the optical axis of the laser light. The protective cover 21 forms an enclosed space with the bracket 20 and the base plate 11 to accommodate and protect internal structures and components.
As shown in fig. 3 to 6, the second light emitting portion 52 includes two portions spaced apart from each other in the longitudinal direction, and the two portions are respectively located on both sides of the first light emitting portion 51 in the longitudinal direction. The first light emitting portion 51 is a vertical cavity surface emitting laser that emits first laser light, and each of the two portions of the second light emitting portion 52 is a vertical cavity surface emitting laser that emits second laser light. In the present application, the "longitudinal direction" is defined as the left-right direction of fig. 3 to 6; the "width direction" is defined as a direction perpendicular to the paper surface of fig. 3, and an up-down direction of fig. 4 to 6. The length direction is perpendicular to the width direction. The length direction is perpendicular to the optical axis of the collimator lens 22. The width direction is perpendicular to the optical axis of the collimator lens 22.
In one embodiment, the gaps between the first and second light emitting portions 51 and 52 are not equal, i.e. the laser source assembly 50 has an asymmetric arrangement. In another embodiment, the first and second light emitting portions 51 and 52 have equal gaps, i.e., the laser source assemblies 50 are symmetrically arranged along the length direction. In yet another embodiment, laser source assembly 50 is configured in a 180-degree radiation symmetric configuration, i.e., laser source assembly 50 exhibits symmetric arrangement along both the length and width directions. Preferably, the optical axis of the collimator 22 is spaced from the symmetry axis of the laser light source assembly 50 by a distance of no more than 5 μm. In the present application, it is preferable that the optical axis of the first light emitting portion 51 is not deviated by more than 5 μm from the optical axis of the collimator lens 22, and the optical axis of the second light emitting portion 52 is not deviated by more than 5 μm from the optical axis of the collimator lens 22.
The first light-emitting portion 51 has a dimension L in the longitudinal direction 1 A dimension in the width direction of H 1 . The dimension of each of the two portions of the second light emitting section 52 in the longitudinal direction is L 2 A dimension in the width direction of H 2 . The distance L between the two parts along the length direction d Is L 2 Where N is a positive integer, e.g., N is any one of 1, 2, and 3.
As shown in fig. 3, the distance between the collimator lens 22 and the first and second light emitting portions 51 and 52 is equal to the focal length f thereof. As shown in fig. 3 and 4, the periodic structure dimension E in the width direction and the first wavelength λ of the diffractive optical element 30 are according to the grating equation 1 Having a relationship defined by equation (1):
E sin[arctan(H 1 /2f)]＝kλ 1 (1)
where k is the photogate order. Thus, with respect to the first light-emitting portion 51, the minimum periodic structure dimension E in the width direction of the diffractive optical element 30 1 Having a relationship defined by equation (2):
similarly, for the second light emitting section 52, the minimum periodic structure dimension E in the width direction of the diffractive optical element 30 2 Having a relationship defined by equation (3):
if the periodic structure of the diffractive optical element 30 satisfies both the first light-emitting part 51 and the second light-emitting part 52, E is required to be equal to 1 ＝E 2 . Therefore, the laser projector 10 is configured such that the dimensions in the width direction of the first light-emitting portion 51 and the second light-emitting portion 52 satisfy the relationship defined by the formula (4):
similarly, according to the grating equation, in order to enable the periodic structure of the same diffractive optical element 30 in the length direction to satisfy both the first wavelength λ 1 and the second wavelength λ 2, and to ensure that the projection lights of the two portions of the second light emitting portion 52 can be well spliced, the laser projector 10 is configured such that the dimensions of the first light emitting portion 51 and the second light emitting portion 52 in the length direction satisfy the relationship defined by the formula (5):
according to the laser projector 10 of the present application, by emitting laser light of different wavelengths, respectively, it is possible to satisfy different needs of users, such as red storm prevention or obtaining a clear image. The arrangement and size relationship of the first light-emitting part 51 and the second light-emitting part 52 are defined, so that the laser beams with two wavelengths can share the same diffractive optical element 30, and the laser projector 10 has a simple structure, low cost and easy operation.
A second aspect of the present application provides a camera assembly. In a preferred embodiment, it comprises the laser projector 10, image collector and processor described above. Wherein the image collector is used to collect a laser image formed by the projection pattern of the laser projector 10. A processor is used to process the laser image to obtain a depth image. Preferably, the processor comprises the control components of the laser projector 10.
A third aspect of the present application provides an electronic device. In a preferred embodiment, it comprises a housing and a camera assembly according to the following application. Wherein the camera assembly is disposed to and exposed from the housing to obtain the depth image. Preferably, the electronic device is a monitoring device.
The camera assembly and the electronic device according to the present application have all the features and effects of the laser projector 10 since they include the laser projector 10.
It should be particularly noted that fig. 3 to 6 in the drawings of the present application are only schematic diagrams for easy understanding, and are not used to specifically limit the product. The characteristics of the product are subject to the description herein.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.
The present application has been described in terms of the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the present application to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present application, all of which fall within the scope of the present application as claimed.
Claims (13)
1. A laser projector, comprising:
the laser light source assembly comprises a first light-emitting part and a second light-emitting part, wherein the first light-emitting part is used for emitting first laser light, the second light-emitting part is used for emitting second laser light, the first wavelength is not equal to the second wavelength, the second light-emitting part comprises two parts which are spaced from each other along the length direction, and the two parts are respectively positioned at two sides of the first light-emitting part;
a collimating mirror for collimating the laser light;
a diffractive optical element for diffracting the laser light to form a projection pattern; and
a control assembly coupled to the laser light source assembly for controlling the first and second light-emitting portions to be capable of emitting light at different times,
wherein,
a dimension of the first light-emitting portion in the longitudinal direction is L 1 And a dimension in the width direction of H 1 ，
A dimension of each of the two portions of the second light-emitting portion in the length direction is L 2 A dimension in the width direction of H 2 The distance between the two parts along the length direction is L 2 2N times of (a), wherein N is a positive integer,
the laser projector is configured such that the sizes of the first and second light-emitting portions satisfy the following relationship:
wherein f is the focal length of the collimating mirror, λ 1 Is said first wavelength, λ 2 For the second wavelength, the width direction is perpendicular to the length direction, the width direction is perpendicular to the optical axis of the collimating mirror, and the length direction is perpendicular to the optical axis of the collimating mirror.
2. The laser projector of claim 1 wherein the optical axis of the first light emitting portion is offset from the optical axis of the collimating mirror by no more than 5 μ ι η and the optical axis of the second light emitting portion is offset from the optical axis of the collimating mirror by no more than 5 μ ι η.
3. The laser projector of claim 1 wherein the gap between the two portions of the first and second light-emitting portions is not equal.
4. The laser projector of claim 1 wherein the first and second light emitting portions have equal gaps between the two portions.
5. The laser projector of claim 4 wherein the laser light source assembly is configured in a 180 degree radiation symmetric configuration.
6. The laser projector of claim 5 wherein the optical axis of the collimating mirror is no more than 5 μm from the axis of symmetry of the laser light source assembly.
7. The laser projector of claim 1 wherein N is any one of 1, 2 and 3.
8. The laser projector of any one of claims 1 to 7 wherein one of the first and second wavelengths is 840nm to 860nm and the other of the first and second wavelengths is 930nm to 950nm.
9. The laser projector of claim 8,
the control component controls one of the first light-emitting part and the second light-emitting part to emit the laser according to a user instruction; or
The laser projector further comprises a light sensor for sensing ambient brightness, the light sensor is coupled to the control component, and the control component controls one of the first light-emitting part and the second light-emitting part to emit the laser light according to time information and/or ambient brightness information.
10. A camera head assembly, comprising:
the laser projector of any one of claims 1 to 9;
an image collector for collecting a laser image formed by the projection pattern of the laser projector; and
a processor for processing the laser image to obtain a depth image.
11. The camera assembly of claim 10, wherein the processor comprises the control assembly.
12. An electronic device, comprising:
a housing; and
the camera assembly of claim 10 or 11, disposed to and exposed from the housing to obtain a depth image.
13. The electronic device of claim 12, wherein the electronic device is a monitoring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211003218.3A CN115437162A (en) | 2022-08-19 | 2022-08-19 | Laser projector, camera assembly and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211003218.3A CN115437162A (en) | 2022-08-19 | 2022-08-19 | Laser projector, camera assembly and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115437162A true CN115437162A (en) | 2022-12-06 |
Family
ID=84243477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211003218.3A Pending CN115437162A (en) | 2022-08-19 | 2022-08-19 | Laser projector, camera assembly and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115437162A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040264859A1 (en) * | 2003-05-28 | 2004-12-30 | Funai Electric Co., Ltd. | Diffraction grating for plural wavelengths, optical pickup apparatus and optical disk apparatus using diffraction grating for plural wavelengths |
| JP2007214153A (en) * | 2006-02-07 | 2007-08-23 | Ricoh Co Ltd | Multi-beam light source unit, optical scanning apparatus and image forming apparatus |
| JP2010244588A (en) * | 2009-04-01 | 2010-10-28 | Sharp Corp | Diffraction element for two wavelength, and optical pickup using the same |
| JP2011186175A (en) * | 2010-03-09 | 2011-09-22 | Konica Minolta Opto Inc | Laser optical element and image projector using the same |
| US20110310921A1 (en) * | 2010-03-05 | 2011-12-22 | TeraDiode, Inc. | Wavelength Beam Combining Laser with Multiple Outputs |
| JP2014062796A (en) * | 2012-09-20 | 2014-04-10 | Sanyo Electric Co Ltd | Information acquisition device and object detector |
| EP3124923A1 (en) * | 2015-07-28 | 2017-02-01 | Mitutoyo Corporation | Displacement detecting device |
| US20170322424A1 (en) * | 2014-11-21 | 2017-11-09 | Heptagon Micro Optics Pte. Ltd. | Optical pattern projection |
| CN111880318A (en) * | 2020-05-09 | 2020-11-03 | 浙江水晶光电科技股份有限公司 | Structured light projector, three-dimensional imaging device and three-dimensional imaging method |
| US20210265821A1 (en) * | 2020-02-25 | 2021-08-26 | Nichia Corporation | Light source device and direct diode laser system |
| 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 |
| WO2022063451A1 (en) * | 2020-09-24 | 2022-03-31 | Dr. Johannes Heidenhain Gmbh | Device and method for simultaneously imaging two object planes |
| CN115327792A (en) * | 2022-08-19 | 2022-11-11 | 北京驭光科技发展有限公司 | Laser projector, camera assembly and electronic device |
-
2022
- 2022-08-19 CN CN202211003218.3A patent/CN115437162A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040264859A1 (en) * | 2003-05-28 | 2004-12-30 | Funai Electric Co., Ltd. | Diffraction grating for plural wavelengths, optical pickup apparatus and optical disk apparatus using diffraction grating for plural wavelengths |
| JP2007214153A (en) * | 2006-02-07 | 2007-08-23 | Ricoh Co Ltd | Multi-beam light source unit, optical scanning apparatus and image forming apparatus |
| JP2010244588A (en) * | 2009-04-01 | 2010-10-28 | Sharp Corp | Diffraction element for two wavelength, and optical pickup using the same |
| US20110310921A1 (en) * | 2010-03-05 | 2011-12-22 | TeraDiode, Inc. | Wavelength Beam Combining Laser with Multiple Outputs |
| JP2011186175A (en) * | 2010-03-09 | 2011-09-22 | Konica Minolta Opto Inc | Laser optical element and image projector using the same |
| JP2014062796A (en) * | 2012-09-20 | 2014-04-10 | Sanyo Electric Co Ltd | Information acquisition device and object detector |
| US20170322424A1 (en) * | 2014-11-21 | 2017-11-09 | Heptagon Micro Optics Pte. Ltd. | Optical pattern projection |
| EP3124923A1 (en) * | 2015-07-28 | 2017-02-01 | Mitutoyo Corporation | Displacement detecting device |
| US20210265821A1 (en) * | 2020-02-25 | 2021-08-26 | Nichia Corporation | Light source device and direct diode laser system |
| CN111880318A (en) * | 2020-05-09 | 2020-11-03 | 浙江水晶光电科技股份有限公司 | Structured light projector, three-dimensional imaging device and three-dimensional imaging method |
| WO2022063451A1 (en) * | 2020-09-24 | 2022-03-31 | Dr. Johannes Heidenhain Gmbh | Device and method for simultaneously imaging two object planes |
| 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 |
| CN115327792A (en) * | 2022-08-19 | 2022-11-11 | 北京驭光科技发展有限公司 | Laser projector, camera assembly and electronic device |
Non-Patent Citations (1)
| Title |
|---|
| 朱占达;缑龙;姜梦华;惠勇凌;雷訇;李强;: "双光栅实现半导体激光阵列波长组束", 强激光与粒子束, no. 04, 15 April 2015 (2015-04-15) * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11373321B2 (en) | Projector including meta-lens | |
| EP3483640A1 (en) | Projector including meta-lens | |
| US8690341B2 (en) | Image projector and an illuminating unit suitable for use in an image projector | |
| US7542669B2 (en) | Diffraction display device and viewfinder display device | |
| US20070146473A1 (en) | Light source device, optical scanning device, and image forming apparatus | |
| JP2006191521A (en) | Illumination device and image reading device | |
| JP3538128B2 (en) | Projection device | |
| JP2007057656A (en) | Optical diaphragm device and projector | |
| JP2006301424A (en) | Projector | |
| US20120326006A1 (en) | Object detecting device and information acquiring device | |
| CN108415209B (en) | Structured light projection module, camera shooting assembly and electronic device | |
| CN115327792A (en) | Laser projector, camera assembly and electronic device | |
| US7355615B2 (en) | Optical scanning apparatus | |
| CN115437162A (en) | Laser projector, camera assembly and electronic device | |
| JP6172494B2 (en) | Light source device and projector | |
| JP4945723B2 (en) | Floodlight unit for camera superimposition | |
| JP4661635B2 (en) | Optical apparatus and projector | |
| KR20080110341A (en) | Micro scanner and image projector using the same | |
| JP2003098329A (en) | Diffraction grating, diffraction optical element and optical system using the diffraction optical element | |
| JP7078985B2 (en) | Image projection device | |
| JP5169420B2 (en) | Lighting device, display device, finder device, and camera | |
| JP2009175352A (en) | Projector | |
| JP2007052358A (en) | Optical unit | |
| JP5099319B2 (en) | Hologram imaging optical system | |
| JP2000066134A (en) | Image forming device, image reading device using this image forming device and optical writing device |
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 | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230615 Address after: 8 / F, building 3, 1156 Gaoqiao Avenue, Tongxiang City, Jiaxing City, Zhejiang Province, 314500 Applicant after: JIAXING UPHOTON OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Address before: Room 1206-6, floor 12, building 7, yard a 13, Huayuan Road, Haidian District, Beijing 100088 Applicant before: BEIJING THETO OPTICAL SCIENCE AND TECHNOLOGY DEVELOPMENT CO.,LTD. |
|
| TA01 | Transfer of patent application right |