WO2019192240A1

WO2019192240A1 - Laser emitter, optoelectronic apparatus, depth camera and electronic device

Info

Publication number: WO2019192240A1
Application number: PCT/CN2019/070768
Authority: WO
Inventors: 白剑
Original assignee: Oppo广东移动通信有限公司
Priority date: 2018-04-03
Filing date: 2019-01-08
Publication date: 2019-10-10
Also published as: CN108490637B; CN108490637A

Abstract

A laser emitter (10), an optoelectronic apparatus (100), a depth camera (1000), and an electronic device (2000). The laser emitter (10) comprises a light source (12) and a mask (14) disposed on a light emitting path of the light source (12). The mask (14) comprises a plurality of light-transmitting regions (142), wherein the shape and/or light transmittance of each light-transmitting region (142) is different, or the plurality of the light-transmitting regions (142) are divided into a plurality of groups, and the shape and/or light transmittance of each group of light-transmitting regions (142) is different.

Description

Laser transmitters, optoelectronic devices, depth cameras and electronic devices

Priority information

The present application claims priority to and the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit.

Technical field

The present application relates to the field of imaging technologies, and in particular, to a laser transmitter, an optoelectronic device, a depth camera, and an electronic device.

Background technique

Optoelectronic devices such as laser projectors are used to emit a set optical pattern to a target space, and optoelectronic devices are widely used in the field of optical-based three-dimensional measurement. The photoelectric device generally comprises a light source, a collimating element and a diffractive optical element, wherein the light source may be a single edge emitting laser light source, or an area array laser light source composed of a plurality of vertical cavity surface emitting lasers.

Summary of the invention

Embodiments of the present application provide a laser emitter, an optoelectronic device, a depth camera, and an electronic device.

A laser emitter of an embodiment of the present application includes a light source and a mask disposed on a light-emitting path of the light source, the mask including a plurality of light-transmitting regions; wherein each of the light-transmitting regions has a shape and/or a transparent shape The amount of light is different; or a plurality of the light-transmitting regions are divided into a plurality of groups, and the shape and/or the amount of light transmission of each of the light-transmitting regions are different.

The photovoltaic device of the embodiment of the present application includes a substrate and the laser emitter described in the above embodiment, and the laser emitter is disposed on the substrate.

The depth camera of the embodiment of the present application includes the optoelectronic device, the image collector, and the processor according to the above embodiments; the image collector is configured to collect a laser pattern projected by the optoelectronic device into the target space; The optoelectronic device and the image collector are coupled, and the processor is configured to process the laser pattern to obtain a depth image.

The electronic device of the embodiment of the present application includes a housing and the depth camera described in the above embodiment, the depth camera being disposed in the housing and exposed from the housing to acquire a depth image.

Additional aspects and advantages of the embodiments of the present invention will be set forth in part in the description which follows

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a schematic structural view of a laser emitter according to some embodiments of the present application;

2 is a schematic structural view of a mask of a laser emitter according to some embodiments of the present application;

3 is a schematic structural diagram of an optoelectronic device according to some embodiments of the present application;

4 is a schematic structural view of a mask of a laser emitter according to some embodiments of the present application;

5 is a schematic structural view of a light source of a laser emitter according to some embodiments of the present application;

6 is a schematic structural view of a laser emitter according to some embodiments of the present application;

7 is a schematic structural view of a laser emitter according to some embodiments of the present application;

8 is a schematic structural view of a laser emitter according to some embodiments of the present application;

9 is a schematic structural diagram of an optoelectronic device according to some embodiments of the present application;

10 is a schematic structural diagram of a depth camera according to some embodiments of the present application;

11 is a schematic structural diagram of an electronic device according to some embodiments of the present application.

detailed description

The embodiments of the present application are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are intended to be illustrative of the embodiments of the present invention and are not to be construed as limiting.

In the description of the embodiments of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "previous" "," "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of describing the embodiments and the simplified description of the present application, and does not indicate or imply that the device or component referred to has a specific orientation to be specific. The orientation configuration and operation are therefore not to be construed as limiting the embodiments of the present application. Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include one or more of the described features either explicitly or implicitly. In the description of the embodiments of the present application, the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise.

In the description of the embodiments of the present application, it should be noted that the terms "installation", "connection", and "connection" are to be understood broadly, and may be fixed connection, for example, or Removable connection, or integral connection; can be mechanical connection, electrical connection or communication with each other; can be direct connection or indirect connection through intermediate medium, can be internal connection of two components or two components Interaction relationship. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood on a case-by-case basis.

The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present application. In order to simplify the disclosure of embodiments of the present application, the components and settings of the specific examples are described below. Of course, they are merely examples and are not intended to limit the application. In addition, the embodiments of the present application may repeat reference numerals and/or reference letters in different examples, which are for the purpose of simplicity and clarity, and do not in themselves indicate the relationship between the various embodiments and/or arrangements discussed. . Moreover, embodiments of the present application provide examples of various specific processes and materials, but one of ordinary skill in the art will recognize the use of other processes and/or the use of other materials.

Referring to FIGS. 1 and 2, the laser emitter 10 of the embodiment of the present application includes a light source 12 and a mask 14 disposed on the light-emitting path of the light source 12. The mask 14 includes a plurality of light transmissive regions 142. The shape and/or the amount of light transmitted by each of the light-transmitting regions 142 are different; or the plurality of light-transmitting regions 142 are divided into a plurality of groups, and the shape and/or the amount of light transmitted by each of the light-transmitting regions 142 are different.

Referring to FIG. 1 , in some embodiments, the mask 14 further includes an opaque region 144 that is in contact with the plurality of light transmissive regions 142 . The mask 14 is a light transmissive mask 14, and the opaque region 144 is covered with an opaque material; or the mask 14 is an opaque mask 14, and the light transmissive region 142 is a through hole.

Referring to FIG. 1, in some embodiments, source 12 is a vertical cavity surface emitting laser. The light source 12 includes a substrate 122 and a light emitting element array 124 disposed on the substrate 122.

Referring to FIGS. 2 and 5, in some embodiments, the array of light-emitting elements 124 includes a plurality of light-emitting elements 1242 that are regularly distributed. The plurality of light-transmitting regions 142 are divided into a plurality of groups, and the plurality of light-emitting elements 1242 are also divided into a plurality of groups, and each of the light-transmitting regions 142 corresponds to a group of light-emitting elements 1242.

Referring to FIG. 5, in some embodiments, the plurality of sets of light emitting elements 1242 includes a first set of light emitting elements 1242 and a second set of light emitting elements 1242. The first group of light-emitting elements 1242 are regularly or irregularly distributed, and the second group of light-emitting elements 1242 are regularly or irregularly distributed.

Referring to FIG. 2, in some embodiments, each set of light-emitting elements 1242 is used to be driven to emit light beams of different light intensities.

Referring to FIG. 2, in some embodiments, each set of light-emitting elements 1242 is used to be driven to emit light beams of different wavelengths.

Referring to Figure 7, in some embodiments, source 12 is an edge emitting laser. The light source 12 includes a light emitting surface 126 that faces the mask 14.

Referring to FIG. 3, the optoelectronic device 100 of the embodiment of the present application includes a substrate 30 and a laser emitter 10. The laser emitter 10 is disposed on the substrate 30.

Referring to FIG. 10, the depth camera 1000 of the embodiment of the present application includes an optoelectronic device 100, an image collector 200, and a processor 300. The image collector 200 is used to capture a laser pattern projected by the optoelectronic device 100 into the target space. The processor 300 is connected to the optoelectronic device 100 and the image collector 200, respectively, and the processor 300 is configured to process the laser pattern to obtain a depth image.

Referring to FIG. 11 , the electronic device 2000 of the embodiment of the present application includes a housing 2001 and a depth camera 1000 . The depth camera 1000 is disposed within the housing 2001 and exposed from the housing 2001 to acquire a depth image.

Referring to FIG. 1 and FIG. 2 together, the laser emitter 10 of the embodiment of the present application includes a light source 12 and a mask 14 disposed on the light-emitting path of the light source 12. The mask 14 includes a plurality of light transmissive regions 142. Wherein, the shape and/or the amount of light transmission of each of the light-transmitting regions 142 are different; or the plurality of light-transmitting regions 142 are divided into a plurality of groups, and the shape and/or the amount of light transmitted by each of the light-transmitting regions 142 are different (as shown in FIG. 2). Show).

Referring to FIG. 3, the laser emitter 10 of the embodiment of the present application can be used in the photovoltaic device 100. The optoelectronic device 100 includes a substrate 30, a laser emitter 10, a collimating element 50, and a diffractive optical element 70. The light source 12 is disposed on the substrate 30, and the mask 14, the collimating element 50, and the diffractive optical element 70 are sequentially disposed on the light-emitting path of the light source 12. Specifically, the light source 12 is for emitting laser light, the collimating element 50 is for collimating the laser light emitted by the light source 12 and passing through the light transmitting region 142 of the mask 14, and the diffractive optical element 70 is used for collimating the collimating collimating element 50 The laser is formed to form a laser pattern. That is, the laser emitter 10 of the embodiment of the present application can be applied to the photovoltaic device 100 including the collimating element 50 and the diffractive optical element 70 to emit a light beam to generate a laser pattern. Of course, the laser emitter 10 of the embodiment of the present application can also be applied to any optoelectronic device 100 that uses the laser emitter 10 to emit a light beam. At this time, the optoelectronic device 100 includes a substrate 30 and a laser emitter 10, and the laser emitter 10 is disposed at On the substrate 30.

It will be appreciated that optoelectronic devices such as laser projectors are used to transmit a set optical pattern to a target space, and optoelectronic devices are widely used in the field of optical based three-dimensional measurement. The photoelectric device generally comprises a light source, a collimating element and a diffractive optical element, wherein the light source may be a single edge emitting laser light source, or an area array laser light source composed of a plurality of vertical cavity surface emitting lasers. An optoelectronic device based on a single edge emitting laser source can emit a laser pattern with higher correlation, but its volume will increase significantly as the output power increases, and the uniformity of the laser pattern is poor; Two optoelectronic devices that emit a laser source with a vertical cavity surface can emit a laser pattern of the same power and higher uniformity in a smaller volume, but the laser pattern is less correlated, and the laser pattern is uncorrelated. The height directly affects the depth of the depth image and the speed of the depth image.

In the laser emitter 10 and the optoelectronic device 100 of the embodiment of the present application, the shape and/or the amount of transmitted light of each of the light-transmitting regions 142 of the mask 14 are different, or the shape and/or the amount of light transmitted by each of the light-transmitting regions 142. Differently, the irrelevance of the laser pattern can be improved, thereby improving the speed and accuracy of acquiring the depth image of the laser pattern.

It should be noted that the irrelevance of the laser pattern refers to the uniqueness of each laser pattern generated by the light beam emitted by the light source 12, and the uniqueness includes the uniqueness of the shape, size, arrangement position, and the like of the laser pattern.

Specifically, the plurality of transparent regions 142 may not be grouped, and the shape and/or the amount of light transmission of each of the light-transmitting regions 142 are different, specifically including: the shape of each of the light-transmitting regions 142 is different; or the transparent portion 142 is transparent. The amount of light is different; or the shape and the amount of light transmitted by each of the light transmitting regions 142 are different.

Referring to FIG. 2 again, the plurality of light-transmissive regions 142 may be divided into multiple groups, and the shape and/or the amount of light transmission of each of the light-transmitting regions 142 are different, specifically including: the shape of each of the light-transmitting regions 142 is different; or each group The light transmission area 142 has a different amount of light transmission; or each of the light transmission areas 142 has a different shape and light transmission amount. When the same group of light-transmitting regions 142 includes a plurality of light-transmitting regions 142, the shapes and the amount of light transmitted by the plurality of light-transmitting regions 142 are the same.

The shape of the light transmitting region 142 includes a square, a rectangle, a triangle, a parallelogram, a diamond, a trapezoid, a circle, a fan, a ring, or an arbitrary shape. The amount of light transmitted by the light transmitting region 142 can be measured by the area of the light transmitting region 142.

Referring to FIG. 4, in some embodiments, the amount of light transmitted by each of the light-transmitting regions 142 is different, and the amount of light transmitted from the central region to the edge region of the self-mask 14 is gradually increased.

It can be understood that when the laser emitter 10 emits laser light, since the laser light is diverged, the laser light emitted by the laser emitter 10 includes a zero-order beam and a non-zero-order beam, wherein the zero-order beam is superimposed and concentrated at the center of the illumination after the laser is diverged. The beam of position, the non-zero-order beam is the beam that is transmitted around the illuminating point after the laser is diverged. When the intensity of the zero-order beam is too strong, the zero-order beam cannot be completely diffracted when it is transmitted to the diffractive optical element 70, resulting in the intensity of the zero-order beam emitted by the diffractive optical element 70 being too strong, which may jeopardize the user's eyes. In the embodiment of the present application, the amount of light transmitted from the central region to the edge region of the self-mask 14 is gradually increased, so that the light concentrated at the intermediate position of the optical path can be reduced, thereby reducing the emission of the laser emitter 10. The intensity of the zero-order beam.

Referring again to FIG. 1, the mask 14 includes an opaque region 144 that interfaces with the plurality of light transmissive regions 142. The mask 14 is a light transmissive mask 14, and the opaque region 144 is covered with an opaque material.

Specifically, the material of the transparent mask 14 may be glass, polymethyl methacrylate (PMMA), polycarbonate (Polycarbonate, PC), polyimide (PI), or the like. Since materials such as glass, PMMA, PC, and PI all have excellent light transmission properties, the light-transmitting region 142 may not have a through hole.

The opaque material covered by the opaque region 144 may be a metal material such as gold, silver, copper, zinc, chromium, aluminum, or other opaque material. The opaque material may be formed on the surface of the mask 14 on the side close to the light source 12 by vacuum evaporation. The laser light emitted by the light source 12 is passed through the mask 14 by a portion of the opaque material that does not cover the opaque material and is collimated by the collimating element 50.

With continued reference to FIG. 1 , in other embodiments, the mask 14 includes an opaque region 144 that interfaces with the plurality of light transmissive regions 142 . The mask 14 is an opaque mask 14, and the light-transmitting region 142 is a through hole.

Specifically, the plurality of transparent regions 142 are a plurality of through holes, and the plurality of through holes may be spaced apart from each other or may be in communication. The laser light emitted by the light source 12 is passed through the mask 14 by the through holes and then collimated by the collimating element 50.

It can be understood that in other embodiments, the mask 14 may be made of a light transmissive material and an opaque material. Specifically, the light transmissive region 142 is made of a light transmissive material (for example, glass, PMMA, PC, and PI). The light transmittance may be different or the same according to the grouping of the light transmitting regions 142, and the light opaque region 144 is made of a non-light transmitting material (for example, metal or the like).

The light source 12 is a vertical cavity surface emitting laser, and the light source 12 includes a substrate 122 and a light emitting element array 124 disposed on the substrate 122.

Specifically, a vertical cavity surface emitting laser is a novel laser that emits light on a vertical surface. Compared with a conventional edge emitting laser, such as a distributed feedback laser, the integration of a high-density two-dimensional array can be easily realized. High power output, and because it has a smaller volume than the edge-emitting laser, it is easier to be integrated into small electronic components; while the vertical cavity surface emitting laser has high coupling efficiency with the fiber, so it does not need complicated and expensive. The beam shaping system and the manufacturing process are compatible with LEDs, which greatly reduces production costs.

Of course, in other embodiments, the light source 12 can also be other types of point source light emitting devices, which are not limited herein.

The light emitting element array 124 includes a plurality of light emitting elements 1242. The number of the light-transmitting regions 142 may be greater than the number of the light-emitting elements 1242. At this time, at least one of the light-emitting elements 1242 corresponds to at least two light-transmitting regions 142; or the number of the light-transmitting regions 142 is equal to the number of the light-emitting elements 1242. The light-emitting elements 1242 correspond to one light-transmitting region 142 (as shown in FIG. 1), or at least one light-emitting element 1242 corresponds to at least two light-transmitting regions 142, or at least one light-transmitting region 142 corresponds to at least two light-emitting elements 1242; or The number of the light-transmitting regions 142 is smaller than the number of the light-emitting elements 1242. At this time, at least one of the light-transmitting regions 142 corresponds to at least two light-emitting elements 1242.

Referring to FIG. 2 and FIG. 5 together, in some embodiments, the array of light-emitting elements 124 includes a plurality of light-emitting elements 1242 that are regularly distributed. The plurality of light transmitting regions 142 are divided into a plurality of groups, and the plurality of light emitting elements 1242 are also divided into a plurality of groups. Each set of light transmissive regions 142 corresponds to a set of light emitting elements 1242.

Specifically, the rule distribution includes a matrix distribution (including rows and columns perpendicular to each other, or rows and columns forming a predetermined inclination angle), an annular distribution, an equidistant distribution along a predetermined direction, or an arbitrary regular distribution, which is not used herein. limit. It will be appreciated that the fabrication of a plurality of regularly distributed light-emitting elements 1242 on the same semiconductor substrate 122 can greatly increase manufacturing efficiency.

For example, the plurality of sets of light-emitting elements 1242 includes a first set of light-emitting elements 1242 and a second set of light-emitting elements 1242, the first set of light-emitting elements 1242 being regularly or irregularly distributed, and the second set of light-emitting elements 1242 being regularly or irregularly distributed.

Specifically, the plurality of sets of light-emitting elements 1242 are still regularly distributed as a whole. The first group of light-emitting elements 1242 and the second group of light-emitting elements 1242 may each be irregularly distributed (as shown in FIG. 5); or the first group of light-emitting elements 1242 are regularly distributed, and the second group of light-emitting elements 1242 are irregularly distributed; The first set of light-emitting elements 1242 are irregularly distributed, the second set of light-emitting elements 1242 are regularly distributed; or the first set of light-emitting elements 1242 and the second set of light-emitting elements 1242 are regularly distributed.

When the first group of light-emitting elements 1242 are regularly distributed and the second group of light-emitting elements 1242 are irregularly distributed, when the laser emitter 10 is manufactured, a regularly distributed first group of light-emitting elements 1242 may be formed on the substrate 122, and then A second set of light-emitting elements 1242 or other groups of light-emitting elements 1242 are supplementally formed on the substrate 122 such that the plurality of sets of light-emitting elements 1242 are generally regularly distributed.

In some embodiments, each set of light-emitting elements 1242 is used to be driven to emit light beams of different light intensities.

Specifically, the plurality of sets of light-emitting elements 1242 emit light at the same time, and the intensity of the light beam emitted by each set of light-emitting elements 1242 can be freely controlled. For example, referring to FIG. 5, a plurality of light-emitting elements 1242 are divided into four groups, a first group of light-emitting elements 1242 is used to emit a light beam having a light intensity of L1, and a second group of light-emitting elements 1242 is used to emit a light beam having a light intensity of L2. The third group of light-emitting elements 1242 is for emitting a light beam having a light intensity of L3, and the fourth group of light-emitting elements 1242 is for emitting a light beam having a light intensity of L4, wherein L1 ≠ L2 ≠ L3 ≠ L4. In this way, by controlling the intensity ratio of the light beams of the different groups of the light-emitting elements 1242, the light beams can sequentially obtain the spots of different shapes after passing through the mask 14, the collimating element 50, and the diffractive optical element 70, resulting in high irrelevance. Laser pattern.

In the embodiment of the present application, since the irrelevance of the laser pattern can be improved by controlling the intensity of the light beams emitted by the different groups of the light-emitting elements 1242, the mask 14 only needs a lower degree of improvement of the laser pattern. It is irrelevant, that is, the difference between the light transmission amounts of the plurality of sets of light-transmitting regions 142 can be small, and the light transmission amount of each of the light-transmitting regions 142 can be set relatively large to reduce the light loss. .

In some embodiments, each set of light emitting elements 1242 is used to be driven to emit light beams of different wavelengths.

Specifically, the plurality of sets of light-emitting elements 1242 emit light at the same time, and the wavelength of the light beam emitted by each set of light-emitting elements 1242 can be freely controlled. For example, referring to FIG. 5, a plurality of light-emitting elements 1242 are divided into four groups, a first group of light-emitting elements 1242 is used to emit a light beam having a wavelength of λ1, and a second group of light-emitting elements 1242 is used to emit a light beam having a wavelength of λ2, and a third The group of light-emitting elements 1242 is for emitting a light beam of wavelength λ3, and the fourth group of light-emitting elements 1242 is for emitting a light beam of wavelength λ4, where λ1 ≠ λ2 ≠ λ3 ≠ λ4. In this way, by controlling the wavelength ratio of the light beams of the different groups of light-emitting elements 1242, the light beams can pass through the mask 14, the collimating element 50, and the diffractive optical element 70 in sequence, thereby obtaining spots of different shapes, resulting in high irrelevance. Laser pattern.

Wherein, in the process of using the laser emitter 10, the light-emitting element 1242 can emit light beams of different wavelengths by changing the temperature of the light-emitting element 1242. In general, the higher the temperature of the light-emitting element 1242, the higher the wavelength of the emitted light beam. Long; also when the laser emitter 10 is manufactured, the plurality of sets of light-emitting elements 1242 are configured to emit light beams of different wavelengths.

In the embodiment of the present application, since the uncorrelation of the laser pattern can be improved by controlling the wavelengths of the light beams emitted by the different groups of the light-emitting elements 1242, the mask 14 only needs a lower degree of improvement of the laser pattern. It is irrelevant, that is, the difference between the light transmission amounts of the plurality of sets of light-transmitting regions 142 can be small, and the light transmission amount of each of the light-transmitting regions 142 can be set relatively large to reduce the light loss. .

Referring to FIGS. 1 and 3 together, in some embodiments, the mask 14 is spaced from the source 12.

Referring to FIG. 6, in some embodiments, the mask 14 and the light emitting element array 124 are integrated on the substrate 122. As such, it is advantageous to reduce the volume of the laser emitter 10. At this time, the mask 14 may surround the circumference or opposite sides of the light emitting element array 124.

Referring to FIG. 7 , in some embodiments, the light source 12 is an edge emitting laser, and the light source 12 includes a light emitting surface 126 that faces the mask 14 .

Specifically, the light source 12 adopts an edge emitting laser. On the one hand, the edge emitting laser has a smaller temperature drift than the vertical cavity surface emitting laser. On the other hand, since the edge emitting laser is a single point light emitting structure, it is not necessary to design an array structure and is simple to manufacture. And the cost is lower.

Further, the light source 12 may be a Distributed Feedback Laser (DFB). The light source 12 has a columnar shape as a whole, and the light source 12 forms a light-emitting surface 126 away from one end surface of the substrate 30. The laser light is emitted from the light-emitting surface 126, and the light-emitting surface 126 faces the mask 14. Referring to FIG. 3, the collimating optical axis of the collimating element 50 is perpendicular to the light emitting surface 126 and the mask 14, and the collimating optical axis passes through the light emitting surface 126 and the center of the mask 14. The light source 12 is fixed on the substrate 30. Specifically, the light source 12 can be adhered to the substrate 30 through the sealant 80. For example, a side of the light source 12 opposite to the light emitting surface 126 is bonded to the substrate 30 (as shown in FIG. 7). . At this time, the sealant 80 may be a thermal conductive adhesive to conduct heat generated by the operation of the light source 12 to the substrate 30. The substrate 30 can be made of a heat dissipating material, such as a ceramic material, to dissipate the light source 12 to improve the service life of the laser emitter 10.

It can be understood that when the laser of the edge emitting laser is propagating, the gain of the power is obtained through the feedback of the grating structure. To increase the power of the edge-emitting laser, it is necessary to increase the injection current and/or increase the length of the edge-emitting laser. Since increasing the injection current causes the power consumption of the edge-emitting laser to increase and the heat generation is severe, therefore, in order to ensure The edge-emitting laser can work normally, and it is necessary to increase the length of the edge-emitting laser, resulting in an edge-emitting laser generally having a slender structure. When the light emitting surface 126 of the edge emitting laser faces the mask 14, the side emitting laser is placed vertically. Since the edge emitting laser has a slender strip structure, the emitting laser is prone to accidents such as dropping, shifting or shaking, and thus the sealing is set. The glue 80 is capable of holding the edge-emitting laser to prevent accidents such as dropping, displacement or shaking of the edge-emitting laser.

In some embodiments, the light source 12 can also be attached to the substrate 30 in a fixed manner as shown in FIG. Specifically, the optoelectronic device 100 includes a plurality of support blocks 90 that can be fixed on the substrate 30. The plurality of support blocks 90 collectively surround the light source 12 and interfere with the side surface 128 of the light source 12, and the light source 12 can be directly mounted during installation. Between the plurality of support blocks 90. In one example, a plurality of support blocks 90 collectively clamp the light source 12 to prevent the light source 12 from sloshing.

In some embodiments, the material of the substrate 30 may be plastic, for example, Polyethylene Glycol Terephthalate (PET), Polymethyl Methacrylate (PMMA), Polycarbonate. Any one or more of (Polycarbonate, PC) and Polyimide (PI). As such, the substrate 30 is lighter in weight and has sufficient support strength.

Referring to FIG. 3, in some embodiments, the number of collimating elements 50 can be one. A collimating element 50 corresponds to the plurality of light transmissive regions 142. Thus, the manufacturing process is relatively simple.

Referring to FIG. 9 , in some embodiments, the number of the collimating elements 50 may be plural, and the plurality of collimating elements 50 are divided into a plurality of groups, and the plurality of collimating elements 50 may be integrated on the mask 14 and each The group collimating elements 50 correspond to each set of light transmitting regions 142, respectively. Further, each set of collimating elements 50 can have different focal lengths, wherein different focal lengths include positive and negative and/or size of the focal length. That is, each set of collimating elements 50 is capable of producing different diverging or converging beams. In this way, the irrelevance of the laser pattern can be further improved.

The collimating element 50 may include one or more lenses. The one or more lenses are coaxially disposed on the illuminating light path of the light source 12, and the lens is made of a glass material to solve the problem that the lens will have a temperature drift when the ambient temperature changes. problem. The shape of each lens may be any one of an aspherical surface, a spherical surface, a Fresnel surface, and a binary optical surface.

Referring to FIG. 10, the depth camera 1000 of the embodiment of the present application includes the optoelectronic device 100, the image collector 200, and the processor 300 of the embodiment of the present application. The image collector 200 is used to capture a laser pattern projected by the optoelectronic device 100 into the target space. The processor 300 is connected to the optoelectronic device 100 and the image collector 200, respectively. The processor 300 is for processing a laser pattern to obtain a depth image.

Specifically, the optoelectronic device 100 projects the laser pattern projected into the target space through the projection window 400, and the image collector 200 collects the laser pattern modulated by the target object through the acquisition window 500. The image collector 200 may be an infrared camera. The processor 300 calculates an offset value of each pixel point in the laser pattern and a corresponding pixel point in the reference pattern by using an image matching algorithm, and further obtains the depth of the laser pattern according to the deviation value. image. The image matching algorithm may be a Digital Image Correlation (DIC) algorithm. Of course, other image matching algorithms can be used instead of the DIC algorithm.

Referring to FIG. 11 , an electronic device 2000 according to an embodiment of the present application includes a housing 2001 and a depth camera 1000 of the above embodiment. The depth camera 1000 is disposed within the housing 2001 and exposed from the housing 2001 to obtain a depth image. The electronic device 2000 includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a smart wristband, a smart watch, a smart helmet, smart glasses, and the like. The housing 2001 can provide the depth camera 1000 with protection against dust, water, drop, and the like.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples", etc. Specific features, structures, materials, or characteristics described in the manner of example or example are included in at least one embodiment or example of the application. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

Any process or method description in the flowcharts or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a particular logical function or process. And the scope of the preferred embodiments of the present application includes additional implementations, in which the functions may be performed in a substantially simultaneous manner or in the reverse order depending on the functions involved, in accordance with the illustrated or discussed order. It will be understood by those skilled in the art to which the embodiments of the present application pertain.

The logic and/or steps represented in the flowchart or otherwise described herein, for example, may be considered as an ordered list of executable instructions for implementing logical functions, and may be embodied in any computer readable medium, Used in conjunction with, or in conjunction with, an instruction execution system, apparatus, or device (eg, a computer-based system, a system including a processing module, or other system that can fetch instructions and execute instructions from an instruction execution system, apparatus, or device) Or use with equipment. For the purposes of this specification, a "computer-readable medium" can be any apparatus that can contain, store, communicate, propagate, or transport a program for use in an instruction execution system, apparatus, or device, or in conjunction with the instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer readable media include the following: electrical connections (IPM overcurrent protection circuits) with one or more wires, portable computer disk cartridges (magnetic devices), random access memories ( RAM), read only memory (ROM), erasable editable read only memory (EPROM or flash memory), fiber optic devices, and portable compact disk read only memory (CDROM). In addition, the computer readable medium may even be a paper or other suitable medium on which the program can be printed, as it may be optically scanned, for example by paper or other medium, followed by editing, interpretation or, if appropriate, other suitable The method is processed to obtain the program electronically and then stored in computer memory.

It should be understood that portions of the embodiments of the present application can be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques well known in the art: having logic gates for implementing logic functions on data signals. Discrete logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

One of ordinary skill in the art can understand that all or part of the steps carried by the method of implementing the above embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium. When executed, one or a combination of the steps of the method embodiments is included.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. The integrated modules, if implemented in the form of software functional modules and sold or used as stand-alone products, may also be stored in a computer readable storage medium.

The above mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

While the embodiments of the present application have been shown and described above, it is understood that the foregoing embodiments are illustrative and are not to be construed as limiting the scope of the present application. The embodiments are subject to changes, modifications, substitutions and variations.

Claims

A laser emitter, comprising:

Light source; and

a mask disposed on a light emitting path of the light source, the mask comprising a plurality of light transmissive regions;

The shape and/or the amount of light transmission of each of the light-transmitting regions are different; or the plurality of the light-transmitting regions are divided into a plurality of groups, and the shape and/or the amount of light transmitted by each of the light-transmitting regions are different.
The laser emitter according to claim 1, wherein the mask further comprises an opaque region that is in contact with the plurality of the light-transmissive regions;

The mask is a light transmissive mask, and the opaque region is covered with an opaque material; or

The mask is an opaque mask, and the light transmissive area is a through hole.
A laser emitter according to claim 1, wherein said light source is a vertical cavity surface emitting laser, said light source comprising a substrate and an array of light emitting elements disposed on said substrate.
The laser emitter according to claim 3, wherein the array of light-emitting elements comprises a plurality of light-emitting elements that are regularly distributed, and the plurality of light-transmitting regions are divided into a plurality of groups, and the plurality of light-emitting elements are also divided into A plurality of groups, each of the light transmissive regions corresponding to a group of the light emitting elements.
The laser emitter according to claim 4, wherein the plurality of sets of the light-emitting elements comprise a first group of light-emitting elements and a second group of light-emitting elements, the first group of light-emitting elements being regularly distributed or irregularly distributed, The second group of illuminating elements are regularly distributed or irregularly distributed.
A laser emitter according to claim 4 wherein each set of said light emitting elements is adapted to be driven to emit light beams of different light intensities.
A laser emitter according to claim 4 wherein each set of said light emitting elements is adapted to be driven to emit light beams of different wavelengths.
The laser emitter of claim 1 wherein said source is an edge emitting laser, said source comprising a light emitting surface, said light emitting surface facing said mask.
An optoelectronic device, comprising:

Substrate; and

a laser emitter, the laser emitter being disposed on the substrate, the laser emitter comprising:

Light source; and

a mask disposed on a light emitting path of the light source, the mask comprising a plurality of light transmissive regions;

The shape and/or the amount of light transmission of each of the light-transmitting regions are different; or the plurality of the light-transmitting regions are divided into a plurality of groups, and the shape and/or the amount of light transmitted by each of the light-transmitting regions are different.
The photovoltaic device according to claim 9, wherein said optoelectronic device further comprises a collimating element and a diffractive optical element;

The light source is disposed on the substrate, and the mask, the collimating element, and the diffractive optical element are sequentially disposed on a light emitting path of the light source.
The photovoltaic device according to claim 9 or 10, wherein the mask further comprises an opaque region that is in contact with the plurality of the light-transmitting regions;

The mask is a light transmissive mask, and the opaque region is covered with an opaque material; or

The mask is an opaque mask, and the light transmissive area is a through hole.
The photovoltaic device according to claim 9 or 10, wherein the light source is a vertical cavity surface emitting laser, and the light source comprises a substrate and an array of light emitting elements disposed on the substrate.
The photovoltaic device according to claim 12, wherein the light-emitting element array comprises a plurality of light-emitting elements regularly distributed, the plurality of light-transmitting regions are divided into a plurality of groups, and the plurality of light-emitting elements are also divided into a plurality of And each set of the light-transmitting regions corresponds to a group of the light-emitting elements.
The optoelectronic device according to claim 13, wherein the plurality of sets of the light emitting elements comprise a first group of light emitting elements and a second group of light emitting elements, the first group of light emitting elements being regularly distributed or irregularly distributed, The second group of illuminating elements are regularly distributed or irregularly distributed.
The photovoltaic device according to claim 13, wherein each of said groups of said light-emitting elements is adapted to be driven to emit light beams of different light intensities.
The photovoltaic device of claim 13 wherein each set of said light emitting elements is adapted to be driven to emit light beams of different wavelengths.
The photovoltaic device according to claim 9 or 10, wherein the light source is an edge emitting laser, and the light source comprises a light emitting surface, the light emitting surface facing the mask.
The photovoltaic device according to claim 17, wherein said light emitting surface is perpendicular to a collimating optical axis of said collimating element.
A depth camera, comprising:

The optoelectronic device of claims 9-18;

An image collector for collecting a laser pattern projected by the optoelectronic device into a target space; and

a processor coupled to the optoelectronic device and the image collector, respectively, the processor for processing the laser pattern to obtain a depth image.
An electronic device, comprising:

Housing; and

The depth camera of claim 19, the depth camera being disposed within the housing and exposed from the housing to acquire a depth image.