CN111541151A - Light-emitting device, laser equipment and electronic equipment - Google Patents

Abstract

The invention provides a light-emitting device, a laser device and an electronic device, wherein the light-emitting device comprises a substrate, a first substrate and a second substrate, wherein the substrate comprises at least two contact surfaces; at least two lasers disposed on the at least two contact surfaces; at least two optical elements disposed on the at least two lasers; after the light rays emitted by the at least two lasers pass through the at least two optical elements, the light rays respectively light up preset areas in the view field. The light-emitting device provided by the invention can realize a wide-angle view field.

Description

Light-emitting device, laser equipment and electronic equipment

Technical Field

The present invention relates to the field of laser technology, and in particular, to a light emitting device, a laser apparatus, and an electronic apparatus.

Background

A Vertical-Cavity Surface-Emitting Laser (VCSEL, also known as Vertical Cavity Surface-Emitting Laser) is a semiconductor, and its Laser is emitted perpendicular to the top Surface, which is different from the edge-Emitting Laser generally emitted from the edge, because the VCSEL has more advanced function than the edge-Emitting Laser, so with the rapid development of technology, deep research of the VCSEL and the expansion of application requirements, the VCSEL not only plays more and more important roles in the fields of mobile phones, consumer electronics, etc., but also is used for face recognition, 3D sensing, gesture detection and VR (virtual reality)/AR (augmented reality)/MR (mixed reality), etc.

In the application scenes of laser radar (Lidar) and three-dimensional sensing (3D sensing), characteristic quantities such as the position and the speed of a target need to be detected by emitting laser beams. The laser chip emits detection signals (laser beams) to a target, and then a receiving end compares the received signals (target echoes) reflected from the target with the emitted signals, and after proper processing, the relevant information of the target, such as target distance, direction, height, speed, posture, even shape and other parameters, can be obtained, so that the target object is detected, tracked and identified. However, in the prior art, the scanning range of the solid-state lidar is very limited, so that the field of view scanned by the lidar is also very small. The detection range is increased by the optical element, and the detection distance is reduced.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present invention proposes a lighting device that can achieve a larger angular field of view.

To achieve the above and other objects, the present invention provides a light emitting device, including,

a substrate comprising at least two contact surfaces;

at least two lasers disposed on the at least two contact surfaces;

at least two optical elements disposed on the at least two lasers;

after the light rays emitted by the at least two lasers pass through the at least two optical elements, the light rays respectively light up preset areas in the view field.

Further, a preset angle is formed between every two adjacent contact surfaces, and the preset angle determines the preset angle between the at least two lasers.

Further, the light rays emitted by the at least two lasers correspond to different directions.

Furthermore, the substrate further comprises a plane, and a bearing piece is arranged on the plane.

Further, the carrier comprises a plurality of the contact surfaces on which the lasers are arranged.

Further, the at least two lasers are independently controlled.

Further, the number of lasers is equal to the number of optical elements, the lasers including vertical cavity surface emitting lasers.

Further, the field of view comprises at least two preset areas, the laser, the optical element and the preset angle determining an angular extent of the preset areas.

Furthermore, the invention also provides a laser device, which comprises,

a housing;

at least one light emitting device disposed within the housing, the at least one light emitting device comprising,

a substrate comprising at least two contact surfaces;

at least two lasers disposed on the at least two contact surfaces;

at least two optical elements disposed on the at least two lasers;

after the light rays emitted by the at least two lasers pass through the at least two optical elements, the light rays respectively light up preset areas in the view field.

Furthermore, the invention also provides an electronic device comprising,

a light emitting module for emitting signal light;

the light receiving module is used for acquiring signal light reflected by an object to be detected and forming an image of the object to be detected based on the acquired signal light;

wherein the light emitting module at least comprises a light emitting device, the light emitting device comprises,

a substrate comprising at least two contact surfaces;

at least two lasers disposed on the at least two contact surfaces;

at least two optical elements disposed on the at least two lasers;

after the light rays emitted by the at least two lasers pass through the at least two optical elements, the light rays respectively light up preset areas in the view field.

In summary, the present invention provides a light emitting device, in which a plurality of contact surfaces are disposed on a substrate, and a predetermined angle is formed between the contact surfaces, and when a plurality of lasers are disposed on the contact surfaces, the directions of light emitted by the plurality of lasers can be different, that is, the angles of the light can be enlarged, so that when the light emitted by the plurality of lasers forms different predetermined regions, a large-angle viewing field can be realized. The lasers in the invention are independent of each other and can be controlled arbitrarily, so that any area in the visual field can be lightened.

Drawings

FIG. 1: a schematic diagram of the light emitting device in this embodiment.

FIG. 2: another schematic diagram of the light emitting device in this embodiment.

FIG. 3: a schematic diagram of a light-emitting device in this embodiment is shown.

FIG. 4: the signal control of the laser in this embodiment.

FIG. 5: the shape of the substrate in this example.

FIG. 6: another shape of the substrate in this embodiment.

FIG. 7: a schematic diagram of the laser apparatus in this embodiment.

FIG. 8: a schematic diagram of the electronic device in this embodiment.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

As shown in fig. 1, the present embodiment provides a light emitting device 100, where the light emitting device 100 includes a substrate 110, a laser 120, and an optical element 130.

As shown in fig. 1, in the present embodiment, the substrate 110 may be disposed on a base or disposed in a housing. In this embodiment, the substrate 110 has a contact surface 110a, the contact surface 110a is used for placing the laser 120, a surface of the substrate 110 opposite to the contact surface 110a may be disposed on the base, the contact surface 110a is, for example, a plane, the contact surface 110a is provided with a circuit connected to the laser 120, in this embodiment, the contact surface 110a is provided with one laser 120, and of course, two or more lasers 120 may also be provided. In the present embodiment, the substrate 110 may be a PCB substrate, for example.

As shown in fig. 1, in the present embodiment, the laser 120 is disposed at the center of the substrate 110, that is, at the center of the contact surface 110a, and the laser 120 may be disposed at any position of the contact surface 110a according to actual needs, the laser 120 is electrically connected to the contact surface 110a, and the laser 120 is used for emitting light. The laser 120 is, for example, a vertical cavity surface emitting laser or other laser light source.

As shown in fig. 1, in the present embodiment, an optical element 130 is further disposed above the laser 120, the central axes of the optical element 130 and the laser 120 may be in the same direction, and the optical element 130 plays a role of shaping the light emitted by the laser 120 (outgoing light), i.e., changing the intensity distribution of the outgoing light to a desired intensity distribution, and simultaneously adjusting the phase distribution of the outgoing light so as to control the propagation path of the outgoing light, thereby lighting different regions in the field of view. The optical element 130 may be one of a prism, a Diffuser (Diffuser), a refractive optical element or a Diffractive Optical Element (DOE), for example, and the optical element 130 may also be a light diffusing structure.

As shown in FIG. 1, a laser 120 is provided in FIG. 1, so that when the laser 120 is energized, a region in the field of view 200 may be illuminated, such as a first region 210 in the field of view 200. In this embodiment, the first region 210 may be, for example, an elongated field of view, the first region 210 is projected on an XZ plane, the Y direction is shown as the direction of the light emitted by the laser 120, the angular span of the first region 210 in the X direction is α, and the angular span in the Z direction is β, α is, for example, 60 °, β is, for example, 45 °. It should be noted that, in the present embodiment, the laser 120 is disposed on the XZ plane, for example, the field of view 200 is formed on the XZ plane, for example, and the Y direction may be the direction of the light emitted by the laser 120.

As shown in fig. 2, in this embodiment, it should be noted that, fig. 2 does not show an optical element, and fig. 2 shows three lasers, such as a first laser 121, a second laser 122, and a third laser 123, which are arranged in sequence. There is a spacing between the first laser 121, the second laser 122 and the third laser 123, that is, the spacing between the first laser 121 and the second laser 122 is equal to the spacing between the second laser 122 and the third laser 123. In this embodiment the first laser 121 illuminates the first region 210, the second laser 122 illuminates the second region 220, and the third laser 123 illuminates the third region 230. When the first laser 121, the second laser 122 and the third laser 123 are excited simultaneously, since the first laser 121, the second laser 122 and the third laser 123 have the same divergence angle, that is, the first region 210, the second region 220 and the third region 230 have the same angular span in the X and Z directions, and since the first laser 121, the second laser 122 and the third laser 123 have a space therebetween, the first region 210 formed by the first laser 121 is shifted to the left side, the third region 230 formed by the third laser 123 is shifted to the right side, and since the space between the first laser 121, the second laser 122 and the third laser 123 is small, the amount of shift of the first region 210 to the left side and the amount of shift of the third region 230 to the right side are also small, the first region 210 formed by the first laser 121, the second region 220 formed by the second laser 122 and the third region 230 formed by the third laser 123 overlap, the overlapping first region 210, second region 220 and third region 230 form a field of view 200. The angle of the field of view 200 formed by fig. 2 is greater than the angle of the field of view 200 formed by fig. 1. In fig. 2 the first area 210, the second area 220 and the third area 230 form the entire field of view 200, the angle of the field of view 200 being for example 40 ° × 60 °, wherein 40 ° denotes the angular extent of the field of view 200 in the X-direction and 60 ° denotes the angular extent of the field of view 200 in the Z-direction.

As shown in fig. 1-2, in the present embodiment, although the angle of the field of view 200 in fig. 2 is larger than the angle of the field of view 200 in fig. 1, the angle of the field of view 200 in fig. 2 may be approximately equal to the angle of the field of view 200 in fig. 1 from a long distance, and thus the increased angle of the field of view 200 is limited although a plurality of lasers are provided on the substrate.

Of course, in some embodiments, the angle of divergence of the lasers may also be varied to expand the angle of the field of view 200.

As shown in fig. 3, the present embodiment provides another light-emitting device 100, and the light-emitting device 100 can realize a larger angle of view 200. It should be noted that the light-emitting device 100 in fig. 3 does not show an optical element, and the position and function of the optical element can be referred to fig. 1 and the above description.

As shown in fig. 3, in the present embodiment, the light emitting device 100 includes a substrate 110, and the substrate 110 includes three contact surfaces, such as a first contact surface 111, a second contact surface 112 and a third contact surface 113. The first contact surface 111, the second contact surface 112 and the third contact surface 113 have a predetermined angle therebetween, for example, the predetermined angle between the first contact surface 111 and the second contact surface 112 is θ, the predetermined angle θ is, for example, in the range of 0 to 180 °, the predetermined angle θ excludes 0 ° and 180 °, that is, when the predetermined angle is 0 ° or 180 °, the first contact surface 111 and the second contact surface 112 form a plane, and thus the structure in fig. 3 is the same as the structure in fig. 2.

As shown in fig. 3, in the present embodiment, the light emitting device 100 includes three lasers, for example, a first laser 121, a second laser 122, and a third laser 123. A first laser 121 is arranged on the first contact surface 111, a second laser 122 is arranged on the second contact surface 112 and a third laser 123 is arranged on the third contact surface 113. The first laser 121 may be used to illuminate a first area 210 in the field of view 200, the second laser 122 may be used to illuminate a second area 220 in the field of view 200, and the third laser 123 may be used to illuminate a third area 230 in the field of view 200. The first region 210, the second region 220 and the third region 230 are, for example, elongated fields of view, two adjacent elongated fields of view are parallel to each other and have their geometric centers not overlapped with each other, and the first region 210, the second region 220 and the third region 230 are overlapped to form the desired field of view 200. When the preset angle θ between the first contact surface 111 and the second contact surface 112 is changed, the angular span of the first region 210 in the X direction can be adjusted, that is, the angular range of the first region 210 can be adjusted by adjusting the preset angle θ between the first contact surface 111 and the second contact surface 112, and similarly, when the preset angle θ between all adjacent contact surfaces is adjusted at the same time, the angular ranges of the first region 210, the second region 220 and the third region 230 can be adjusted at the same time, that is, the range of the field of view 200 can be adjusted, and the field of view 200 with a large angle can be realized. In the present embodiment, assuming that the preset angle θ between the first contact surface 111 and the second contact surface 112 is 135 °, the preset angle between the second contact surface 112 and the third contact surface 113 is also 135 °, when the first laser 121, the second laser 122 and the third laser 123 are simultaneously activated or turned on, the first laser 121 lights up the first region 210, the second laser 122 lights up the second region 220, and the third laser 123 lights up the third region 230. It should be noted that, since the preset angle between the first contact surface 111 and the second contact surface 112 is 135 °, and the preset angle between the second contact surface 112 and the third contact surface 113 is also 135 °, the included angle between the center of the first region 210 and the center of the second region 220 in the X direction is 45 ° (180 ° -135 ° -45 °). The angle between the centers of the second region 220 and the third region 230 in the X direction is, for example, 45 ° (180 ° -135 ° -45 °), and therefore, the angle of the field of view 200 formed by the first region 210, the second region 220, and the third region 230 in the X direction becomes large.

As shown in fig. 3, in the present embodiment, the first region 210, the second region 220 and the third region 230 are not overlapped, but the first region 210, the second region 220 and the third region 230 may be overlapped with each other. In this embodiment, the angular range of the first region 210 may be determined by a preset angle of the first laser 121, an optical element located on the first laser 121, and the first contact surface 111. The angular extent of the second region 220 may be determined by the second laser 122, the optical elements located on the second laser 122, and the predetermined angle of the second contact surface 112. The angular range of the third region 230 may be determined by a predetermined angle of the third laser 123, the optical element located on the third laser 123 and the third contact surface 113. It should be noted that the angular range of the first region 210 refers to the angle of the first region 210 in the X direction, the angular range of the second region 220 refers to the angle of the second region 220 in the X direction, and the angular range of the third region 230 refers to the angle of the third region 230 in the X direction.

As shown in fig. 3, in the present embodiment, the substrate 110 is provided with three contact surfaces, one laser being provided on each contact surface. Because of the angle between the contact surfaces, it is also determined that the lasers emit light in different directions, and of course the light from the lasers also needs to pass through an optical element that further adjusts the propagation path of the light to illuminate different areas of the field of view 200.

As shown in fig. 3, in the present embodiment, the substrate 110 includes three contact surfaces, thereby dividing the field of view 200 into three regions, so that when the substrate 110 includes more contact surfaces, each contact surface is provided with a laser, for example, eight contact surfaces, ten contact surfaces or more, each contact surface having a predetermined angle therebetween. Accordingly, the field of view 200 may also be divided into eight preset regions, ten preset regions or more. Thus, when all lasers are energized or turned on simultaneously, the entire field of view is illuminated. It should be noted that the angle and direction of the light emitted by the laser may also be determined by first dividing the field of view 200 into a plurality of different regions and then designing the shape of the substrate 110 and the angle between the contact surfaces.

As shown in fig. 3, in the present embodiment, the light emitting device 100 includes three lasers, i.e., a first laser 121, a second laser 122 and a third laser 123. The first laser 121, the second laser 122 and the third laser 123 are independent of each other, and the first laser 121, the second laser 122 and the third laser 123 may be sequentially started within a period of time according to a preset program, so that the first laser 121, the second laser 122 and the third laser 123 sequentially emit light with a preset wavelength, and the first area 210, the second area 220 and the third area 230 are sequentially lighted, so as to realize a scanning process of the field of view 200.

In some embodiments, when the shape of the substrate 110 is changed while changing the angle between the contacting surfaces, the first laser 121 may illuminate the second region 220 or the third region 230, and the second laser 122 may illuminate the first region 210 or the third region 230.

As shown in fig. 3-4, fig. 4 shows a signal control diagram of the lasers in the light emitting device 100 of fig. 3, for example, as time goes on, the first laser 121 is first activated, i.e., the first region 210 is lit, then the first laser 121 is turned off, the second laser 122 is activated, i.e., the second region 220 is lit, then the second laser 122 is turned off, and the third laser 123 is activated, i.e., the third region 230 is lit, thereby achieving scanning of the field of view 200.

As shown in fig. 5, in some embodiments, the substrate 110 in fig. (a) includes two contact surfaces, i.e., a first contact surface 111 and a second contact surface 112, an included angle between the first contact surface 111 and the second contact surface 112 is less than 90 °, for example, 45 °, the first contact surface 111 and the second contact surface 112 protrude to the outer side of the substrate 110, i.e., the first contact surface 111 and the second contact surface 112 form a convex portion. In fig. (b), the substrate 110 includes five contact surfaces, i.e., a first contact surface 111, a second contact surface 112, a third contact surface 113, a fourth contact surface 114, and a fifth contact surface 115. The first contact surface 111, the second contact surface 112, the third contact surface 113, the fourth contact surface 114 and the fifth contact surface 115 are sequentially connected, and the first contact surface 111, the second contact surface 112, the third contact surface 113, the fourth contact surface 114 and the fifth contact surface 115 are recessed into the substrate 110, i.e., a recess is formed. In fig. c, the substrate 110 includes five contact surfaces, i.e., a first contact surface 111, a second contact surface 112, a third contact surface 113, a fourth contact surface 114, a fifth contact surface 115, and a sixth contact surface 116. The first contact surface 111, the second contact surface 112, the third contact surface 113, the fourth contact surface 114, the fifth contact surface 115 and the sixth contact surface 116 are sequentially connected, and the first contact surface 111, the second contact surface 112, the third contact surface 113, the fourth contact surface 114, the fifth contact surface 115 and the sixth contact surface 116 protrude outward of the substrate 110, i.e., a protrusion is formed. It should be noted that fig. 3 is only a few shapes of the display substrate 110, and is not a limitation of the present invention.

In this embodiment, when the field of view is divided into many regions, in order to further enlarge the angle of the field of view, at least one plane may be reserved on the substrate, and then a carrier may be disposed on the plane, the carrier may be connected to the circuit on the plane on the substrate, the carrier may include a plurality of contact surfaces, a predetermined angle is also provided between the plurality of contact surfaces, and then a laser is disposed on each surface of the carrier, so that the light emitted by the plurality of lasers faces different directions, and a larger angle of view may be achieved.

As shown in fig. 6, in the present embodiment, in order to realize a larger angle of view, partition can be realized in both directions, and the substrate 110 may be designed to form an angle in both directions. In fig. 6, the substrate 110 includes a plurality of surfaces 110b, the surfaces 110b are connected to each other, and the surfaces 110b have a predetermined angle therebetween, that is, the surfaces 110b form an angle in both directions X and Y. One laser 120a is disposed on each surface 110b, and the lasers 120a are electrically connected to the surface 110 b. The lasers 120a in fig. 6 are controlled independently of each other, and one or more of the lasers 120a can be activated or illuminated at will. When the lasers 120a of the substrate 110 in the X direction are sequentially activated, each region of the field of view in the X direction can be scanned since the light emitted from each laser 120a is directed in a different direction, and similarly, when the lasers 120a of the substrate 110 in the Y direction are sequentially activated, each region of the field of view in the Y direction can be scanned, thereby realizing the divisional control of the field of view. When the surface of the substrate 110 is spherical or approximately spherical, the field of view may be circular in shape, i.e., the angle of the field of view may be 360 ° or approximately 360 °.

As shown in fig. 7, the present embodiment further proposes a laser apparatus 10, the laser apparatus 10 includes a housing 11, a light emitting device 100 and a control unit 13, wherein the light emitting device 100 and the control unit 13 are disposed in the housing, the light emitting device 100 is connected to the control unit 13, and the control unit 13 is used for controlling the light emitting device 100.

As shown in fig. 7, in the present embodiment, a PCB circuit board is disposed on the housing 11, the light emitting device 100 and the control unit 13 are connected to the PCB circuit board, when the laser apparatus 10 is used, the control unit 13 sends an instruction to the light emitting device 100, the light emitting device 100 emits laser light outwards, and the light emitting device 100 has the structure shown in fig. 3, so that the laser apparatus 10 can realize a wide viewing angle.

As shown in fig. 7, in some embodiments, the laser device 10 may further include a light receiving unit, which reflects the laser signal emitted by the light emitting apparatus 100 when encountering an obstacle to form a reflected laser signal.

As shown in fig. 7, in some embodiments, the laser device 10 may be applied, for example, in an advanced driving assistance system, such as mounting the laser device 10 at the front end of an automobile, and the laser device 10 may be, for example, a lidar.

In some embodiments, the laser device 10 may also be used for infrared cameras, 3D depth recognition detectors, image signal processing, and light sources in optical communications, such as light sources in optical transceiver modules of fiber optic modules

As shown in fig. 8, the present embodiment further provides an electronic device 30, where the electronic device 30 includes a light emitting module 31 and a light receiving module 32.

As shown in fig. 8, in the present embodiment, the light emitting module 31 includes a light emitting device 100, and signal light can be emitted through the light emitting device 100. The light emitting device 100 may have the structure of fig. 3, for example. In this embodiment, a light source circuit is disposed in the light emitting module 31, and the light source circuit is used for driving the light emitting device 100 to operate to generate signal light.

As shown in fig. 8, in the present embodiment, the electronic device 30 further includes a light receiving module 32, and the light receiving module 32 is configured to receive the signal light and obtain the depth image information. For example, the light emitting module 31 emits light to the target object, the light is reflected by the target object to obtain reflected light, and the light receiving module 32 receives the reflected light and combines the reflected light information of the light emitting module 31 to obtain depth image information. In this embodiment, the light receiving module 32 includes a light sensing circuit and a lens assembly for receiving light and sensing light. The photosensitive circuit is electrically connected to the light source circuit. The photosensitive circuit is configured to process photosensitive information and emitted light information of the light emitting device 100, so as to obtain depth image information.

As shown in fig. 8, in the present embodiment, the electronic device 30 may be, for example, a TOF (time Of flight) camera module, and since the light-emitting apparatus 100 can achieve a wide-angle field Of view, the TOF camera module may be applied to different fields, such as interactive entertainment, motion and gesture detection, expression recognition, entertainment advertisement, medical technology, industrial control, and the like, so that the TOF camera module is more suitable for being applied to various electronic devices, such as a smart phone, a tablet computer, a wearable device, a somatosensory interaction device, a distance measurement device, and a stereoscopic imaging device.

In summary, the present embodiment provides an emitting device, a laser device and an electronic device, wherein a plurality of contact surfaces are disposed on a substrate, and a predetermined angle is formed between the plurality of contact surfaces, when a plurality of lasers are disposed on the plurality of contact surfaces, the directions of light emitted by the plurality of lasers are different, that is, the angles of the light are enlarged, so that when the light emitted by the plurality of lasers forms different predetermined regions, that is, a large-angle viewing field is realized.

The above description is only a preferred embodiment of the present application and a description of the applied technical principle, and it should be understood by those skilled in the art that the scope of the present invention related to the present application is not limited to the technical solution of the specific combination of the above technical features, and also covers other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept, for example, the technical solutions formed by mutually replacing the above features with (but not limited to) technical features having similar functions disclosed in the present application.

Other technical features than those described in the specification are known to those skilled in the art, and are not described herein in detail in order to highlight the innovative features of the present invention.

Claims (10)

1. A light-emitting device, comprising,

a substrate comprising at least two contact surfaces;

at least two lasers disposed on the at least two contact surfaces;

at least two optical elements disposed on the at least two lasers;

after the light rays emitted by the at least two lasers pass through the at least two optical elements, the light rays respectively light up preset areas in the view field.

2. The light-emitting device according to claim 1, wherein a preset angle is formed between two adjacent contact surfaces, and the preset angle determines a preset angle between the at least two lasers.

3. The light-emitting device according to claim 1, wherein the at least two lasers emit light rays corresponding to different directions.

4. The light-emitting device of claim 1, wherein the substrate further comprises a planar surface, and a carrier is disposed on the planar surface.

5. The lighting device as defined in claim 4, wherein the carrier comprises a plurality of the contact surfaces, the laser being disposed on the contact surfaces.

6. The light emitting device of claim 1, wherein the at least two lasers are independently controlled.

7. The light-emitting device according to claim 1, wherein the number of lasers including vertical cavity surface emitting lasers is equal to the number of optical elements.

8. The lighting device according to claim 2, wherein the field of view includes at least two predetermined regions, and the laser, the optical element and the predetermined angle determine an angular extent of the predetermined regions.

9. A laser device, comprising,

a housing;

at least one light emitting device disposed within the housing, the at least one light emitting device comprising,

a substrate comprising at least two contact surfaces;

at least two lasers disposed on the at least two contact surfaces;

at least two optical elements disposed on the at least two lasers;

after the light rays emitted by the at least two lasers pass through the at least two optical elements, the light rays respectively light up preset areas in the view field.

10. An electronic device, comprising,

a light emitting module for emitting signal light;

the light receiving module is used for acquiring signal light reflected by an object to be detected and forming an image of the object to be detected based on the acquired signal light;

wherein the light emitting module at least comprises a light emitting device, the light emitting device comprises,

a substrate comprising at least two contact surfaces;

at least two lasers disposed on the at least two contact surfaces;

at least two optical elements disposed on the at least two lasers;

after the light rays emitted by the at least two lasers pass through the at least two optical elements, the light rays respectively light up preset areas in the view field.

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