阅读说明：本技术 激光发射器、投影模组、光电装置和电子设备 (Laser emitter, projection module, photoelectric device and electronic equipment ) 是由 李宗政 林君翰 陈冠宏 周祥禾 詹明山 于 2018-08-15 设计创作，主要内容包括：本发明公开了一种激光发射器、投影模组、光电装置和电子设备。激光发射器包括衬底和设置在所述衬底上的多个发光元件。所述发光元件至少形成第一阵列及第二阵列,所述第一阵列的行中的发光元件与所述第二阵列的行中的发光元件依次交错分布,所述第一阵列的列中的发光元件与所述第二阵列的列中的发光元件依次交错分布。本发明实施方式的激光发射器可以与掩膜进行配合,激光发射器仅需要提供面光源,激光发射器所需的发光元件的数目较少且无需随机分布,且第一阵列的行中的发光元件和第二阵列的行中的发光元件交错分布,第一阵列的列中的发光元件和第二阵列的列中的发光元件交错分布,可以节省衬底空间,从而可以降低激光发射器的成本。(The invention discloses a laser transmitter, a projection module, a photoelectric device and electronic equipment. The laser emitter includes a substrate and a plurality of light emitting elements disposed on the substrate. The light-emitting elements at least form a first array and a second array, the light-emitting elements in the rows of the first array and the light-emitting elements in the rows of the second array are sequentially distributed in a staggered manner, and the light-emitting elements in the columns of the first array and the light-emitting elements in the columns of the second array are sequentially distributed in a staggered manner. The laser emitter provided by the embodiment of the invention can be matched with the mask, the laser emitter only needs to provide a surface light source, the number of light-emitting elements required by the laser emitter is small, random distribution is not needed, the light-emitting elements in the rows of the first array and the light-emitting elements in the rows of the second array are distributed in a staggered mode, the light-emitting elements in the columns of the first array and the light-emitting elements in the columns of the second array are distributed in a staggered mode, the substrate space can be saved, and the cost of the laser emitter can be reduced.)

1. A laser transmitter, comprising:

a substrate; and

the light-emitting elements at least form a first array and a second array, the light-emitting elements in the rows of the first array and the light-emitting elements in the rows of the second array are sequentially distributed in a staggered manner, and the light-emitting elements in the columns of the first array and the light-emitting elements in the columns of the second array are sequentially distributed in a staggered manner.

2. The laser transmitter of claim 1, wherein the number of light emitting elements in the first array is different from the number of light emitting elements in the second array.

3. The laser transmitter of claim 1, wherein the projection of a light emitting element in a column of the first array is located between two adjacent light emitting elements in a column of the second array.

4. The laser transmitter of claim 1, wherein the rows of the first array are not equidistant from two rows of the second array adjacent to the rows of the first array.

5. The laser transmitter of claim 1, wherein the distances between adjacent light emitting elements are equal.

6. The utility model provides a projection module, its characterized in that, projection module includes:

the laser transmitter of any one of claims 1 to 5, for transmitting laser light; and

a mask for converting the laser light into a laser light pattern of a specific pattern.

7. The projection module of claim 6, wherein the mask comprises an active area for converting the laser light into the laser light pattern and a mounting area surrounding the active area for mounting the mask.

8. The projection module of claim 7, wherein the active area comprises a plurality of transparent areas and a plurality of opaque areas, and the plurality of transparent areas and the plurality of opaque areas are staggered and form the same pattern as the laser pattern.

9. An optoelectronic device, comprising:

the projection module of any of claims 6 to 8, the projection module being configured to emit a laser light pattern towards a target object; and

a camera module for receiving the laser pattern modulated by the target object.

10. An electronic device, characterized in that the electronic device comprises:

a housing; and

the optoelectronic device of claim 9, disposed on the housing.

Technical Field

The invention relates to the technical field of imaging, in particular to a laser transmitter, a projection module, an optoelectronic device and electronic equipment.

Background

At present, a Vertical-Cavity Surface-Emitting Laser (VCSEL) is generally used as a light source of a device for acquiring a depth image, such as a depth camera. However, in order to generate a laser pattern with a large incoherence in cooperation with the diffractive optical element, the number of VCSELs of the VCSEL array is generally large, and the manufacturing cost is high.

Disclosure of Invention

The embodiment of the invention provides a laser transmitter, a projection module, an optoelectronic device and electronic equipment.

The laser transmitter of the embodiment of the invention includes a substrate and a plurality of light emitting elements provided on the substrate. The light-emitting elements at least form a first array and a second array, the light-emitting elements in the rows of the first array and the light-emitting elements in the rows of the second array are sequentially distributed in a staggered manner, and the light-emitting elements in the columns of the first array and the light-emitting elements in the columns of the second array are sequentially distributed in a staggered manner.

The laser emitter provided by the embodiment of the invention can be matched with the mask, the laser emitter only needs to provide a surface light source, and compared with the laser emitter which is matched with the diffractive optical element to obtain a laser pattern with larger irrelevance and needs to be provided with more light-emitting elements and randomly distributed, the laser emitter is matched with the mask and needs fewer light-emitting elements and does not need to be randomly distributed. In addition, the laser emitter divides the light emitting elements into the first array and the second array, the light emitting elements in the rows of the first array and the light emitting elements in the rows of the second array are sequentially distributed in a staggered manner, and the light emitting elements in the columns of the first array and the light emitting elements in the columns of the second array are sequentially distributed in a staggered manner.

In some embodiments, the number of light-emitting elements in the first array is different from the number of light-emitting elements in the second array.

When laser emitter and mask cooperation were used, first array and the crisscross distribution of second array for a plurality of light emitting component distribute comparatively evenly, and correspondingly, the laser that laser emitter sent is also relatively even, is favorable to promoting the detection precision of degree of depth information. When the laser emitter and the diffractive optical element are used in a matched mode, the first array and the second array are provided with the light-emitting elements in different numbers, the overall irrelevance of the light-emitting elements is improved, and the improvement of the detection precision of depth information is facilitated.

In some embodiments, the projection of a light emitting element in a column of the first array is located between two adjacent light emitting elements in a column of the second array.

When laser emitter and mask cooperation were used, first array and the crisscross distribution of second array for a plurality of light emitting component distribute comparatively evenly, and correspondingly, the laser that laser emitter sent is also relatively even, is favorable to promoting the detection precision of degree of depth information. The projection of the light emitting element in the column of the first array is positioned between two adjacent light emitting elements in the column of the second array, so that the overall irrelevance of the plurality of light emitting elements is improved, and the detection precision of the depth information can be improved.

In some embodiments, the rows of the first array are not equidistant from two rows of the second array adjacent to the rows of the first array.

When laser emitter and mask cooperation were used, first array and the crisscross distribution of second array for a plurality of light emitting component distribute comparatively evenly, and correspondingly, the laser that laser emitter sent is also relatively even, is favorable to promoting the detection precision of degree of depth information. When laser emitter cooperation diffraction optical element used, the distance between the adjacent two rows of the row of first array and second array is inequality, has promoted the holistic irrelevance of a plurality of light-emitting component to can promote the detection precision of degree of depth information.

In some embodiments, the distances between adjacent light emitting elements are equal.

Through the adjacent light emitting components of equidistance arrangement, not only can hold more light emitting components in the same area, save the volume of semiconductor substrate, still can provide the area source for the mask in order to launch even laser to promote the detection precision of degree of depth information.

The projection module of the embodiment of the invention comprises the laser emitter and the mask of any one of the embodiments. The laser emitter is used for emitting laser. The mask is used to convert the laser light into a laser pattern of a specific pattern.

In the projection module of the embodiment of the invention, the laser emitter can be matched with the mask and is used for providing a surface light source to emit laser to enter the mask to generate a laser pattern, and the light-emitting elements are divided into the first array and the second array, and the light-emitting elements in the row of the first array and the light-emitting elements in the row of the second array are sequentially distributed in a staggered manner, so that the number of the required light-emitting elements is less compared with the random distribution of the light-emitting elements when the laser emitter is matched with the diffraction optical element for use, and the cost of the laser emitter can be reduced.

In some embodiments, the mask includes an active area for converting the laser light into the laser light pattern and a mounting area surrounding the active area for mounting the mask.

The laser light can be converted into a laser light pattern through the active area. The mounting area surrounds the effective area, the mask is mounted through the mounting area, the assembly of the projection module is facilitated, and the periphery of the mounting area, which is located in the effective area, can have a certain protection effect on the effective area.

In some embodiments, the active area includes a plurality of light-transmitting areas and a plurality of non-light-transmitting areas, and the plurality of light-transmitting areas and the plurality of non-light-transmitting areas are arranged in a staggered manner and form the same pattern as the laser pattern.

Through the crisscross pattern that forms the same with the laser pattern that arranges of a plurality of light transmission areas and non-light transmission area, just can form the laser pattern after laser passes light transmission area, and can form the laser pattern that the irrelevance is higher through the design in light transmission area and non-light transmission area to promote the detection precision of depth information.

The optoelectronic device of the embodiment of the invention comprises the projection module and the camera module of any one of the embodiments. The projection module is used for emitting laser patterns to a target object. The camera module is used for receiving the laser pattern modulated by the target object.

In the optoelectronic device according to the embodiment of the present invention, the laser emitter may be matched with a mask, and is configured to provide a surface light source to emit laser light into the mask to generate a laser pattern, and the light emitting elements are divided into the first array and the second array, and the light emitting elements in the row of the first array and the light emitting elements in the row of the second array are sequentially distributed in a staggered manner, so that the number of light emitting elements required is smaller than the random distribution of the light emitting elements when the laser emitter is used in combination with the diffractive optical element, thereby reducing the cost of the laser emitter.

The electronic equipment of the embodiment of the invention comprises a shell and the photoelectric device. The optoelectronic device is disposed on the housing.

In the electronic device according to the embodiment of the present invention, the laser emitter may be matched with a mask, and is configured to provide a surface light source to emit laser light into the mask to generate a laser pattern, and the light emitting elements are divided into the first array and the second array, and the light emitting elements in the row of the first array and the light emitting elements in the row of the second array are sequentially distributed in a staggered manner, so that the number of light emitting elements required is smaller than the random distribution of the light emitting elements when the laser emitter is used in combination with the diffractive optical element, and the cost of the laser emitter can be reduced. The shell has a certain protection effect on the photoelectric device.

Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of an electronic device according to an embodiment of the invention;

FIG. 2 is a schematic structural diagram of an optoelectronic device according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a projection module according to an embodiment of the invention;

FIG. 4 is a schematic diagram of a laser transmitter according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a mask according to an embodiment of the present invention; and

fig. 6 is a partial structural diagram of a mask according to an embodiment of the present invention.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. The same or similar reference numbers in the drawings identify the same or similar elements or elements having the same or similar functionality throughout.

In addition, the embodiments of the present invention described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the embodiments of the present invention, and are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1, an electronic device 1000 according to an embodiment of the invention includes an optoelectronic device 100 and a housing 200. The electronic device 1000 may be a mobile phone, a tablet computer, a monitoring camera, a laptop computer, a game machine, a head display device, an access control system, a teller machine, etc., and the embodiment of the present invention is described by taking the electronic device 1000 as a mobile phone, it is understood that the specific form of the electronic device 1000 may be other forms, and is not limited herein. The optoelectronic device 100 is disposed on the housing 200 to obtain an image, specifically, the optoelectronic device 100 is disposed in the housing 200 and exposed from the housing 200, the housing 200 can provide protection for the optoelectronic device 100, such as dust prevention, water prevention, and falling prevention, and a hole corresponding to the optoelectronic device 100 is opened on the housing 200, so that light passes through the hole or penetrates into the housing 200.

Referring to fig. 2, the optoelectronic device 100 includes a projection module 10, a camera module 20, and a processor 30. The projection module 10 is used for emitting laser patterns towards a target object. The camera module 20 is used for receiving the laser pattern modulated by the target object. The processor 30 is used for imaging (depth image) according to the laser pattern received by the camera module 20.

Referring to fig. 3, the projection module 10 includes a substrate 14, a lens barrel 15, a laser emitter 11, a mask 12, and a lens assembly 13.

The substrate 14 may be at least one of a flexible circuit board, a rigid circuit board, or a rigid-flex circuit board.

The lens barrel 15 is disposed on the substrate 14 and forms a receiving space 16 with the substrate 14, and the connection method of the lens barrel 15 and the substrate 14 includes screwing, gluing, engaging and the like. The laser emitter 11, the mask 12 and the lens assembly 13 are all accommodated in the accommodating space 16. The laser emitter 11, the mask 12 and the lens assembly 13 are sequentially arranged along the light emitting path of the projection module 10. The lens barrel 15 protects the laser emitter 11, the mask 12 and the lens assembly 13.

Referring to fig. 4, the laser transmitter 11 includes a semiconductor substrate 112 and a plurality of light emitting elements 114. The laser emitter 11 is disposed on the substrate 14 and electrically connected to the substrate 14.

A plurality of light emitting elements 114 are disposed on substrate 112. The light emitting elements 114 form at least a first array 116 and a second array 118, that is, the plurality of light emitting elements 114 are divided into the plurality of light emitting elements 114 of the first array 116 and the plurality of light emitting elements 114 of the second array 118, and the present embodiment is described only by taking as an example the case where the plurality of light emitting elements 114 are divided into the plurality of light emitting elements 114 of the first array 116 and the plurality of light emitting elements 114 of the second array 118, and so on, in the case where the plurality of light emitting elements 114 form more than two arrays (the case where the plurality of light emitting elements 114 are divided into the plurality of light emitting elements 114 of more than two arrays, for example, the plurality of light emitting elements 114 are divided into three arrays, four arrays, five arrays, and so on). The light emitting elements 114 in the rows of the first array 116 and the light emitting elements 114 in the rows of the second array 116 are sequentially distributed in a staggered manner, where as shown in fig. 4, the first array 116 is an odd-numbered row of the entire array (i.e., an array composed of the first array 116 and the second array 118), the second array 118 is an even-numbered row of the entire array, the first array 116 is an even-numbered row of the entire array, and the second array 118 is an odd-numbered row of the entire array. The staggered distribution means that the first row X1 is the first row of the first array 116, the second row X2 is the first row of the second array 118, the third row X3 is the second row of the first array 116, the fourth row X4 is the second row of the second array 118, the fifth row X5 is the third row of the first array 116, the sixth row X6 is the third row of the second array 118, and so on, such that the rows of the first array 116 and the rows of the second array 118 are sequentially staggered. Similarly, the light emitting elements 114 in the columns of the first array 116 and the light emitting elements 114 in the columns of the second array 116 are also distributed in a staggered manner, as shown in fig. 4, here, the first array 116 is composed of even columns of the whole array (i.e., the array composed of the first array 116 and the second array 118), the second array 118 is composed of odd columns of the whole array, the first array 116 is composed of odd columns of the whole array, and the second array 118 is composed of even columns of the whole array. The staggered distribution here means that the first column Y1 is the first row of the second array 118, the second row Y2 is the first row of the first array 116, the third row Y3 is the second row of the second array 118, the fourth row Y4 is the second row of the first array 116, the fifth row Y5 is the third row of the second array 118, the sixth row Y6 is the third row of the first array 116, and so on, so that the columns of the first array 116 and the columns of the second array 118 are staggered in sequence.

When the laser emitter 11 is combined with the diffractive optical element, in order to obtain a laser pattern with a large irrelevance, it is generally necessary to provide a large number of light emitting elements 114 and to randomly distribute the light emitting elements 114, which results in a large space occupied by the substrate 112 and a high manufacturing cost. In addition, most of the randomly distributed non-light emitting elements 114 need to be customized, have no standard products, and need to be manufactured with a new mold, thereby further increasing the manufacturing cost. The laser emitter 11 of the embodiment of the present invention can be matched with the mask 12, and compared with the laser emitter 11 matched with a diffractive optical element, the laser emitter 11 only needs to provide a surface light source, and the number of the required light emitting elements 114 is small and does not need to be randomly distributed, so that customization is not needed, a standard product exists, a mold does not need to be newly manufactured, and cost is saved. In addition, the laser emitter 11 divides the light emitting elements 11 into the first array 116 and the second array 118, and the light emitting elements 114 in the rows of the first array 116 and the light emitting elements 114 in the rows of the second array 118 are sequentially distributed in a staggered manner, and the light emitting elements 114 in the columns of the first array 116 and the light emitting elements 116 in the columns of the second array 118 are sequentially distributed in a staggered manner, so that more light emitting elements 114 can be accommodated in the same space compared with the random distribution of the light emitting elements 114, the space of the substrate 112 can be saved, and the cost of the laser emitter 11 can be further reduced. The first array 116 and the second array 118 are both matrices. Since the first array 116 and the second array 118 are both matrices, in manufacturing, the plurality of light emitting elements 114 of the first array 116 may be manufactured first, and then the plurality of light emitting elements 114 of the second array 118 may be manufactured; alternatively, the plurality of light emitting elements 114 of the second array 118 may be fabricated first, followed by the plurality of light emitting elements 114 of the first array 116. When the matrix is manufactured, the regularity of the matrix is stronger, for example, the first row of the matrix is manufactured first, and the later rows are manufactured in sequence, so that the manufacturing difficulty is reduced, and the manufacturing cost is reduced. In other embodiments, the first array 116 and the second array 118 may be circular arrays, diamond arrays, regular hexagonal arrays, or the like. The first array 116 and the second array 118 of embodiments of the present invention are both matrices.

The number of light emitting elements 114 of the first array 116 is different from the number of light emitting elements 114 of the second array 118. When the laser emitter 11 is used in cooperation with the mask 12, the first array 116 and the second array 118 are distributed in a staggered manner, so that the distribution of the plurality of light emitting elements 114 is relatively uniform, and correspondingly, the laser emitted by the laser emitter 11 is relatively uniform, which is beneficial to improving the detection accuracy of the depth information. When the laser emitter 11 is used in cooperation with the diffractive optical element, the first array 116 and the second array 118 are provided with different numbers of light-emitting elements 114, so that the overall irrelevance of the plurality of light-emitting elements 114 is improved, and the improvement of the detection accuracy of the depth information is facilitated.

The projections of the light emitting elements 114 in the columns of the first array 116 are located between two adjacent light emitting elements 114 in the columns of the second array 118. Specifically, as shown in fig. 4, the first array 116 is an even row of the entire array, the second array 118 is an odd row of the entire array, and the first array 116 is an odd row of the entire array, and the second array 118 is an even row of the entire array. The first column Y2 of the first array 116 is located between the first and second columns Y1 and Y3 of the second array 118, the second column Y4 of the first array 116 is located between the second and third columns Y3 and Y5 of the second array 118, the third column Y6 of the first array 116 is located between the third and fourth columns Y5 and Y7 of the second array 118, and so on, such that the projection of a light emitting element 114 in each column of the first array 116 is located between two adjacent light emitting elements 114 in the columns of the second array 118. When the laser emitter 11 is used in cooperation with the mask 12, the first array 116 and the second array 118 are distributed in a staggered manner, so that the distribution of the plurality of light emitting elements 114 is relatively uniform, and correspondingly, the laser emitted by the laser emitter 11 is relatively uniform, which is beneficial to improving the detection accuracy of the depth information. When the laser emitter 11 is used in cooperation with a diffractive optical element, since the projection of the light emitting element 114 in the column of the first array 116 is located between two adjacent light emitting elements 114 in the column of the second array 118, the overall irrelevance of the plurality of light emitting elements 114 is improved, so that the detection accuracy of the depth information can be improved.

Referring to fig. 4 again, the distance between any two adjacent light emitting elements 144 is equal. At this time, all the light emitting elements 114 adjacent to the periphery of any one of the light emitting elements 114 may be on the circumference of a circle, and the radius R of the circle is the distance between two adjacent light emitting elements 114, wherein the distance refers to the line connecting the centers of two adjacent light emitting elements 114. In the area where the light emitting elements 114 are distributed on the substrate 112, the light emitting elements 114 are uniformly distributed in the area, so that not only can more light emitting elements 114 be accommodated in the same area, and the volume of the substrate 112 is saved, but also a surface light source can be provided for the mask 12 to emit uniform laser, thereby improving the detection accuracy of the depth information.

In some embodiments, the rows of the first array 116 are not equidistant from two rows of the second array 118 adjacent to the rows of the first array 116. Specifically, the second row X3 of the first array 116 is taken as an example for explanation. The second row X3 of the first array 116 is adjacent to the first row X2 and the second row X4 of the second array 118, the second row X3 of the first array 116 is at a distance D2 from the first row X2 of the second array 118, the second row X3 of the first array 116 is at a distance D3 from the second row X4 of the second array 118, and D2 is not equal to D3 (i.e., the distance between a row of the first array 116 and an adjacent two rows of the second array 118 is different), where distances D2 and D3 refer to the vertical distance between rows. Similarly, the distance from the row of the second array 118 to the adjacent two rows of the first array 116 may be different, the first row X2 of the second array 118 is located between the first row X1 and the second row X3 of the first array 116, the distances from the first row X2 of the second array 118 to the first row X1 and the second row X3 of the first array 116 are D1 and D2, respectively, D1 is not equal to D2 (i.e., the distance from the row of the second array 118 to the adjacent two rows of the first array 116 is different), and D1 and D2 refer to the vertical distance between rows. When the laser emitter 11 and the diffractive optical element are matched, the distance from the row of the first array 116 to the adjacent two rows of the second array 118 is different, so that the overall irrelevance of the plurality of light-emitting elements 114 is improved, and the detection precision of the depth information can be improved. When the laser emitter 11 is matched with the mask 12, the first array 116 and the second array 118 are distributed in a staggered manner, so that the distribution of the plurality of light-emitting elements 114 is relatively uniform, and correspondingly, the laser emitted by the laser emitter 11 is relatively uniform, which is beneficial to improving the detection accuracy of the depth information.

Referring to fig. 5, the mask 12 includes an active area 122 and a mounting area 124.

The effective region 122 includes a plurality of light-transmitting regions 126 and a plurality of non-light-transmitting regions 128, and the light-transmitting regions 126 and the non-light-transmitting regions 128 are arranged in a staggered manner and form a pattern which is the same as the laser pattern emitted by the projection module 10. Through reasonable design of arrangement of the light-transmitting area 126 and the non-light-transmitting area 128, a laser pattern with high irrelevance can be formed, the irrelevance of the laser pattern is improved, and therefore the detection precision of depth information is improved. For example, a dot pattern, a grid pattern, a line pattern, and the like may be formed, but of course, the shape is not limited to the above. The shape of the light-transmitting area 126 according to the embodiment of the present invention can be as shown in fig. 6, the area outside the graph of the light-transmitting area 126 is the non-light-transmitting area 128, the light-transmitting areas 126 and the non-light-transmitting areas 128 are arranged in a staggered manner, and the laser emitted by the laser emitter 11 is converted into a laser pattern with high irrelevance, so that the detection accuracy of the depth information can be improved. The range of the effective area 122 is designed according to the coverage of the laser emitted by the laser emitter 11, and preferably, the size of the effective area 122 just covers the coverage of the laser or a certain redundancy is reserved so that all the laser irradiates on the effective area 122, so that the laser can be fully utilized. In addition, through the reasonable size of the effective area 122, the mask 12 can cover all the laser emitted by the laser emitter 11, and the size of the mask is not too large, which is beneficial to reducing the size of the projection module 10.

The mounting area 124 is disposed around the active area 122. The mounting region 124 is used to mount the mask 12 to the lens barrel 15 by means of screwing, gluing, clamping, or the like. The installation area 124 is favorable for assembling the projection module 10, and the installation area 124 is located at the periphery of the effective area 122, so that the effective area 122 can be protected to a certain extent.

Referring to fig. 3 again, the lens assembly 13 is used for further adjusting the laser pattern converted from the mask 12, such as adjusting the line width, the degree of freedom, the viewing angle, and the like of the laser pattern, so that the adjusted laser pattern meets the imaging requirement. The lens assembly 13 may be a separate lens, which may be a convex lens or a concave lens; or the lens is a plurality of lenses which can be convex lenses or concave lenses, or part of the lenses is convex lenses and part of the lenses is concave lenses. The relief of the lens may be set according to the imaging requirements for the laser pattern.

In the projection module 10 according to the embodiment of the present invention, the laser emitter 11 may cooperate with the mask 12 and is configured to provide a surface light source to emit light into the mask 12 to generate a laser pattern, and the light emitting elements 114 are divided into the first array 116 and the second array 118, and the light emitting elements 114 in the rows of the first array 116 and the light emitting elements 114 in the rows of the second array 118 are sequentially distributed in a staggered manner, so that the number of light emitting elements required is smaller than the random distribution of the light emitting elements when the laser emitter 11 cooperates with the diffractive optical element, thereby reducing the cost of the laser emitter.

Referring to fig. 2 and 3, the optoelectronic device 100 is formed with a projection window 40 corresponding to the projection module 10 and a collection window 50 corresponding to the camera module 20. The projection module 10 is used for projecting a laser pattern to a target space through the projection window 40, and the camera module 20 is used for receiving the laser pattern modulated by the target object through the collection window 50 for imaging. When the projection module 10 emits light, firstly, the laser projector 11 emits laser, the laser is converted by the mask 12 to form a laser pattern, and the laser pattern is adjusted by the lens assembly 13 to meet the imaging requirement and then projected from the projection window 40. For example, the projection module 10 emits a laser pattern, which is a speckle pattern, toward the target object. The camera module 20 collects the laser pattern modulated and reflected by the target object through the collection window 50. The processor 30 is connected to both the projection module 10 and the camera module 20, and the processor 30 is used for processing the laser pattern to obtain a depth image. Specifically, the processor 30 generates a depth image from the difference between the laser pattern and the reference pattern by comparing the laser pattern with the reference pattern. In another embodiment, the laser pattern is a coded structured light image with a specific pattern, i.e. a specific code, and the depth image can be acquired by extracting the coded structured light image in the laser pattern and comparing the extracted coded structured light image with a reference pattern. After the depth image is obtained, the method can be applied to the fields of face recognition, 3D modeling and the like.

In the optoelectronic device 100 according to the embodiment of the present invention, the laser emitter 11 may cooperate with the mask 12 and is configured to provide a surface light source to emit uniform light into the mask 12 to generate a laser pattern, and the light emitting elements 114 are divided into the first array 116 and the second array 118, and the light emitting elements 114 in the rows of the first array 116 and the light emitting elements 114 in the rows of the second array 118 are sequentially distributed in a staggered manner, so that the number of light emitting elements required is smaller than the random distribution of the light emitting elements when the laser emitter 11 cooperates with the diffractive optical element, thereby reducing the cost of the laser emitter. In addition, the optoelectronic device 100 can receive and process the laser pattern modulated by the target object through the cooperation of the camera module and the processor 30 to obtain a depth image, so that the optoelectronic device can be applied to the fields of face recognition, 3D modeling and the like.

In the description of the specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, unless specifically limited otherwise.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention, which is defined by the claims and their equivalents.