CN212301894U

CN212301894U - Transmitting module, camera and electronic device

Info

Publication number: CN212301894U
Application number: CN202020765863.9U
Authority: CN
Inventors: 陈楠
Original assignee: OFilm Microelectronics Technology Co Ltd
Current assignee: Jiangxi Oumaisi Microelectronics Co Ltd
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2021-01-05
Anticipated expiration: 2030-05-11

Abstract

The utility model discloses a transmission module, camera and electron device. The transmission module includes: a light source for emitting a light beam having a wavelength of 1050nm to 1550 nm; the converging piece is arranged on one side of the light source and is used for converging the light beam emitted by the light source; the light homogenizing part is arranged opposite to the converging part and is used for uniformly diffusing the converged light beam to an irradiated object; the heat dissipation part is provided with a conductive layer, and the light source is arranged on one side of the heat dissipation part and is electrically connected with the conductive layer; and the circuit board is arranged on one side of the heat dissipation part and is electrically connected with the conducting layer, and the circuit board and the light source are arranged in a separated mode. The emitting module converges the light beams with the wavelength of 1050nm-1550nm through the converging part and uniformly diffuses the light beams through the light homogenizing part to reach the irradiated object, so that the problem that the light beams with the wavelength of 940nm are easily interfered by external light in the prior art is solved, and the light beams reaching the irradiated object are high in quality, low in divergence and high in propagation speed; and the radiating piece can dispel the heat to the light source for the power consumption of light source is lower.

Description

Transmitting module, camera and electronic device

Technical Field

The utility model relates to an optics and electron technical field, concretely relates to transmission module, camera and electron device.

Background

The depth camera can acquire depth information of a target, so that 3D face recognition, 3D scanning, scene modeling and gesture interaction are realized, and the depth camera is gradually paid attention to various industries, for example, a motion sensing game can be realized by combining the depth camera with a television, a computer and the like so as to achieve the effect of two-in-one game and fitness, for example, very real AR game experience can be realized by combining the depth camera with a tablet, a mobile phone and other mobile devices, and the depth camera can be used for performing functions of indoor map creation, navigation and the like.

At present, a commonly used camera acquires three-dimensional information of an object to be photographed by matching a Vertical-Cavity Surface-Emitting Laser (VCSEL) and a receiving module. In the process of implementing the present invention, the inventor finds that there are at least the following problems in the prior art: the wavelength of the light beam emitted by the vcsel is usually 940nm, and the light beam with the wavelength is easily interfered by external light (such as sunlight) during operation, so that more noise exists in the three-dimensional information acquired by the receiving module.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a transmitting module, a camera and an electronic device to solve the above problems.

An embodiment of the present application provides a transmitting module, including:

a light source for emitting a light beam having a wavelength of 1050nm to 1550 nm;

the converging piece is arranged on one side of the light source and is used for converging the light beam emitted by the light source;

the light homogenizing piece is arranged opposite to the converging piece and is used for uniformly diffusing the converged light beam to an irradiated object;

the heat dissipation piece is provided with a conductive layer, and the light source is arranged on one side of the heat dissipation piece and is electrically connected with the conductive layer; and

the circuit board is arranged on one side of the heat dissipation part and electrically connected with the conducting layer, and the circuit board and the light source are arranged in a separated mode.

The transmitting module converges the light beams with the wavelength of 1050nm-1550nm through the converging part and uniformly diffuses the light beams through the light homogenizing part to reach the irradiated object, so that the problem that the obtained three-dimensional information generates noise due to the fact that the light beams with the wavelength of 940nm are easily interfered by external light in the prior art is solved, the quality of the light beams reaching the irradiated object is high, the divergence is low, the propagation speed is high, and the three-dimensional information obtained by the receiving module is accurate; and the radiating piece can dispel the heat to the light source for the power consumption of light source is lower.

In some embodiments, the transmit module further comprises: the bracket is provided with a first through hole, and the converging piece and the light homogenizing piece are arranged in the first through hole at intervals; the heat dissipation part is arranged on the bracket, and light beams emitted by the light source are emitted into the first through hole to enter the convergence part and be emitted by the light uniformizing part.

The utility model discloses in the emission module, because in piece and the even light piece of converging all located first through-hole, the pore wall of first through-hole can shelter from piece and even light piece of converging, avoids the diffusion process of the convergence process of the piece and even light piece of external light influence convergence.

In some embodiments, the transmit module further comprises: the shading piece is arranged on the support and forms a shading chamber with the support, and the light source is positioned in the shading chamber.

The utility model discloses in the transmission module, the light-shading piece can shelter from the light source to in avoiding external light to get into first through-hole, influence the convergence process of converging the piece and the diffusion process of even light piece.

In some embodiments, the circuit board is disposed outside the light-blocking chamber.

The utility model discloses in the transmission module, the circuit board is located the outer size that can effectively reduce the shading room of shading room, also can further place external light and get into in the shading room.

In some embodiments, the transmit module further comprises: the casing, set up in the circuit board, the casing has the second through-hole, the circuit board closing cap the one end of second through-hole, the light source, converge the piece the radiating piece reaches even light piece all is located in the second through-hole.

The utility model discloses in the transmission module, the pore wall and the circuit board of second through-hole can shelter from light source, convergent, even light spare to in avoiding external light to get into the second through-hole, influence the convergence process of convergent and the even diffusion process of even light spare.

In some embodiments, the conductive layer includes a first layer and a second layer, the first layer and the second layer are disposed on two adjacent sides of the heat dissipation member, the light source is disposed on the first layer, and the second layer is connected to the circuit board.

The utility model discloses in the transmission module, with the light source set up in the first layer, the second layer connect in the circuit board has reduced the size of transmission module in the horizontal direction for the structure of transmission module is more compact, has realized miniaturized characteristics.

In some embodiments, the transmit module further comprises: and the reflecting piece is arranged between the converging piece and the light homogenizing piece so as to reflect the light beams converged by the converging piece to the light homogenizing piece.

The utility model discloses in the transmission module, the reflection part can reflect the even light piece of second direction from the first direction with the light beam after the convergence, has reduced the size of transmission module at horizontal direction and vertical direction for the structure of transmission module is more compact, has realized miniaturized characteristics.

In some embodiments, the converging piece has a reflecting portion for reflecting the converged light beam to the smoothing piece.

The utility model discloses in the transmission module, the piece that converges can reflect the even light piece of second direction after the light beam convergence of light source follow first direction transmission, has reduced the size of transmission module at horizontal direction and vertical direction for the structure of transmission module is more compact, has realized miniaturized characteristics.

An embodiment of the present application further provides a camera, including:

a receiving module; and

in the above-mentioned transmitting module, the receiving module is arranged at one side of the transmitting module.

The camera converges the light beam with the wavelength of 1050nm-1550nm through the converging part and uniformly diffuses the light beam through the light homogenizing part to reach the object to be irradiated, so that the problem that the obtained three-dimensional information generates noise due to the fact that the light beam with the wavelength of 940nm is easily interfered by external light in the prior art is solved, the quality of the light beam reaching the object to be irradiated is high, the divergence is low, the propagation speed is high, and the three-dimensional information obtained by the receiving module is accurate; and the radiating piece can dispel the heat to the light source for the power consumption of light source is lower.

The embodiment of the application also provides an electronic device which comprises the camera.

The electronic device converges the light beam with the wavelength of 1050nm-1550nm through the converging part and uniformly diffuses the light beam through the light homogenizing part to reach the object to be illuminated, so that the problem that the obtained three-dimensional information generates noise due to the fact that the light beam with the wavelength of 940nm is easily interfered by external light in the prior art is solved, the quality of the light beam reaching the object to be illuminated is high, the divergence is low, the propagation speed is high, and the three-dimensional information obtained by the receiving module is accurate; and the radiating piece can dispel the heat to the light source for the power consumption of light source is lower.

Additional aspects and advantages of embodiments of the present 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 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 a transmitting module according to a first embodiment of the present invention.

Fig. 2 is an optical schematic diagram of the light source at the fast axis in the transmitting module according to the first embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a transmitting module according to a second embodiment of the present invention.

Fig. 4 is an optical schematic diagram of the light source at the fast axis in the transmitting module according to the second embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a transmitting module according to a third embodiment of the present invention.

Fig. 6 is an optical schematic diagram of a light source at a fast axis in a transmitting module according to a third embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a transmitting module according to a fourth embodiment of the present invention.

Fig. 8 is an optical schematic diagram of a light source in a transmitting module according to a fourth embodiment of the present invention at a fast axis.

Fig. 9 is a schematic structural diagram of a transmitting module according to a fifth embodiment of the present invention.

Fig. 10 is an optical schematic diagram of a light source in a transmitting module according to a fifth embodiment of the present invention at a fast axis.

Fig. 11 is a schematic structural diagram of a transmitting module according to a sixth embodiment of the present invention.

Fig. 12 is an optical schematic diagram of a light source in a transmitting module according to a sixth embodiment of the present invention at a fast axis.

Fig. 13 is a schematic structural diagram of a transmitting module according to a seventh embodiment of the present invention.

Fig. 14 is an optical schematic diagram of a light source in a transmitting module according to a seventh embodiment of the present invention at a fast axis.

Fig. 15 is a schematic structural diagram of a transmitting module according to an eighth embodiment of the present invention.

Fig. 16 is an optical schematic diagram of a light source in a transmitting module according to an eighth embodiment of the present invention at a fast axis.

Fig. 17 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Description of the main elements

Electronic device 1000

Camera 100

Transmitting

module

10, 20, 30, 40, 50, 60, 70, 80

Light sources

11, 21, 31, 41, 51, 61, 71, 81

Beams 112, 212, 312, 412, 512, 612,

712、812

Convergence

12, 22, 32, 42, 52, 62, 72, 82

Light incident surface

122, 222

Light-homogenizing

elements

13, 23, 33, 43, 53, 63, 73, 83

Heat sink

14, 24, 34, 44, 54, 64, 74, 84

Conductive layers

142, 242, 342, 442, 542, 642,

742、842

First layer 2422

Second layer 2424

Circuit boards

15, 25, 35, 45, 55, 65, 75, 85

Support 16

First support part 162

First via 1622

Second support part 164

Shading member 17

Light shielding chamber 172

Housing 26

Second through hole 262

Reflection parts

322, 422, 522

Housings

36, 46, 56, 66, 76, 86

Receptacles

362, 462, 562, 662, 762, 862

Bottom plates

364, 664

Third through

holes

366, 466, 566, 666, 766, 866

First holes

3662, 4662, 5662, 6662, 7662,

8662

Second holes

3664, 4664, 5664, 6664, 7664,

8664

Reflecting

members

67, 77, 87

Lens 90

Main body 200

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1, an emission module 10 according to an embodiment of the present invention includes a light source 11, a converging element 12, a light-homogenizing element 13, a heat-dissipating element 14, and a circuit board 15.

Specifically, the light source 11 is used to emit a light beam 112 having a wavelength of 1050nm to 1550 nm. The condensing member 12 is provided at one side of the light source 11 to condense the light beam 112 emitted from the light source 11. The light uniformizing part 13 is disposed opposite to the converging part 12 for uniformly diffusing the converged light beam 112 to an object (not shown). The heat sink 14 has a conductive layer 142, and the light source 11 is disposed on one side of the heat sink 14 and electrically connected to the conductive layer 142. The circuit board 15 is disposed on one side of the heat sink 14 and electrically connected to the conductive layer 142, and the circuit board 15 is spaced apart from the light source 11.

The light source 11 is an edge-emitting laser or a distributed feedback laser. The wavelengths of the light beams emitted by the edge emitting laser and the distributed feedback laser are within 1050nm-1550nm, so that the light beam 112 is stable, the cost is low, and the distributed feedback laser is beneficial to human eyes and suitable for industrial production; while light sources with wavelengths less than 1050nm and greater than 1550nm are either unstable or costly or can be detrimental to the human eye.

The converging member 12 is semi-cylindrical or semi-elliptical and is made of any one of quartz, glass or optical plastic. Since quartz, glass or optical plastic are all transparent materials and are arranged in a semi-cylindrical or semi-elliptical shape, the light beam 112 with a large diffusion angle can be better converged.

The light uniformizing member 13 is a diffusion sheet. The diffusion sheet can atomize the converged light beam 112 and uniformly diffuse the light beam to an object to be illuminated. It is understood that the light unifying member 13 may be other optical elements having a diffusion function, and is not particularly limited herein.

The heat sink 14 is made of a ceramic material, for example Al₂O₃The alumina ceramic is made of Si₃N₄Silicon oxide ceramics made, silicon carbide ceramics made of SiC, hexagonal boron nitride ceramics made of BN, and the like. Because the ceramic has the characteristics of high temperature resistance, high hardness and good heat conduction, the light source 11 is arranged on the heat dissipation member 14, so that heat generated by the light source 11 in the working state can be effectively conducted, and the power consumption of the light source 11 is low.

The conductive layer 142 of the heat sink 14 is a metal layer, such as an aluminum alloy or silver. In this way, the conductive layer 142 can not only achieve conduction between the light source 11 and the circuit board 15, but also fix the light source 11 and the circuit board 15.

The Circuit Board 15 may be any one of a Flexible Printed Circuit (FPC), a Printed Circuit Board (PCB), and a rigid-Flexible Circuit Board. The light source 11 may be controlled by the circuit board 15 to emit a light beam 112.

The emission module 10 converges the light beam 112 with the wavelength of 1050nm-1550nm through the converging part 12 and uniformly diffuses the light beam through the light homogenizing part 13 to reach the object to be illuminated, so that the problem that the light beam with the wavelength of 940nm is easily interfered by external light in the prior art is solved, the quality of the light beam reaching the object to be illuminated is high, the divergence is low, the propagation speed is high, and the emission module can be applied to scenes with long-distance detection, high frame rate, high speed and low power consumption; and the heat sink 14 may dissipate heat of the light source 11 so that power consumption of the light source 11 is low.

First embodiment

With continued reference to fig. 1, in the first embodiment, the emission module 10 includes a light source 11, a converging element 12, a light-homogenizing element 13, a heat-dissipating element 14, a circuit board 15, a bracket 16 and a light-shielding element 17.

Referring to fig. 2, the optical principle of the present embodiment is: the light source 11 emits a light beam 112 in a first direction, the light beam 112 enters the convergence element 12 from the light incident surface 122 of the convergence element 12, and is transmitted to the light uniformizing element 13 from the other side after being converged, and the light uniformizing element 13 atomizes and uniformly diffuses the converged light beam to an object to be illuminated.

The first direction in the present embodiment is the X-axis direction.

With continued reference to fig. 1, the light source 11 is an edge-emitting laser or a distributed feedback laser for emitting a light beam 112.

The condensing member 12 is provided at one side of the light source 11 to condense the light beam 112 emitted from the light source 11. In this embodiment, the converging member 12 is semi-cylindrical and is made of quartz.

Wherein, the divergence angle of the light beam 112 emitted by the light source 11 in the fast axis direction is 40 degrees, and the divergence angle of the light beam 112 emitted in the slow axis direction is 10 degrees; after being converged by the converging part 12, the divergence angle of the light beam 112 emitted in the fast axis direction is converged to 10 degrees, and the divergence angle of the light beam 112 emitted in the slow axis direction is 10 degrees; that is, the converging part 12 mainly converges the divergence angle of the light beam 112 emitted from the light source 11 in the fast axis direction, and converges the divergence angle of the light beam 112 in the fast axis direction to be close to or equal to the divergence angle in the slow axis direction, so that the light spot uniformly diffused by the light uniformizing part 13 is uniform and clear in profile.

The light homogenizing element 13 is disposed opposite to the converging element 12 and on a side of the converging element 12 facing away from the light source 11, and is used for uniformly diffusing the converged light beam 112 to an illuminated object (not shown). In this embodiment, the light uniformizing member 13 is a diffusion sheet.

The heat sink 14 has a conductive layer 142, and the light source 11 is disposed on one side of the heat sink 14 and electrically connected to the conductive layer 142. In the present embodiment, the heat sink 14 is ceramic. The conductive layer 142 is formed by a layer of solidified silver paste, and when the conductive layer is used, the silver paste is firstly coated on one surface of the heat dissipation member 14, then the wiring terminal of the light source 11 and the wiring terminal of the circuit board 15 are respectively arranged in the silver paste, so that the conduction between the light source 11 and the circuit board 15 can be realized after the silver paste is solidified, and the light source 11 and the circuit board 15 are fixed. It is understood that in other embodiments, the terminals of light source 11 and the terminals of circuit board 15 may be secured to conductive layer 142 by soldering.

The circuit board 15 is disposed on one side of the heat sink 14 and electrically connected to the conductive layer 142, wherein the circuit board 15 and the light source 11 are disposed on the same side of the heat sink 14, and the circuit board 15 and the light source 11 are spaced apart.

The bracket 16 includes a first support portion 162 and a second support portion 164.

The first supporting portion 162 is provided with a first through hole 1622, and the converging member 12 and the light homogenizing member 13 are disposed in the first through hole 1622 at an interval. The second support portion 164 is formed to extend in the negative X-axis direction from one side of the first support portion 162.

The heat sink 14 is disposed on the second supporting portion 164, and the light beam 112 emitted from the light source 11 disposed on the heat sink 14 can enter the first through hole 1622, and is converged by the converging member 12 and uniformly diffused by the light homogenizing member 13, and then is emitted from the first through hole 1622 to irradiate on the object to be irradiated.

In the emission module 10 of this embodiment, the hole wall of the first through hole 1622 may shield the converging piece 12 and the light homogenizing piece 13, so as to prevent external light from entering the first through hole 1622 through the hole wall to affect the converging process of the converging piece 12 and the uniform diffusion process of the light homogenizing piece 13.

Specifically, the bracket 16 is made of a metal material, such as an aluminum alloy, an aluminum titanium alloy, a copper alloy, or the like. In this way, the heat conduction efficiency of the heat sink 14 can be further improved by the direct contact between the heat sink 14 and the metal bracket 16, and specifically, the heat conduction efficiency of the heat sink 14 can be improved from 190W to 210W.

The light shielding member 17 is connected to the first supporting portion 162 and the second supporting portion 164, and forms a light shielding chamber 172 with the first supporting portion 162 and the second supporting portion 164, the light source 11 is located in the light shielding chamber 172, and the circuit board 15 is located outside the light shielding chamber 172. Thus, the light shielding member 17 can shield the light source 11 to prevent the external light from entering the first through hole 1622 and affecting the converging process of the converging member 12 and the uniform diffusion process of the uniform light distribution member 13.

It will be appreciated that in other embodiments, the light shield 17 may be omitted.

The emission module 10 in this embodiment converges the light beam 112 with a wavelength of 1050nm to 1550nm through the converging part 12 and uniformly diffuses the light beam through the light homogenizing part 13, so as to reach the object to be illuminated, thereby solving the problem that the light beam with a wavelength of 940nm is easily interfered by external light in the prior art, and enabling the light beam reaching the object to be illuminated to have high quality, low divergence and high propagation speed; and the heat sink 14 may dissipate heat of the light source 11 so that power consumption of the light source 11 is low.

Second embodiment

Referring to fig. 3, the emission module 20 in the present embodiment includes a light source 21, a converging element 22, a light-homogenizing element 23, a heat-dissipating element 24, a circuit board 25 and a housing 26.

Referring to fig. 4, the optical principle of the present embodiment is: the light source 21 emits a light beam 212 in a first direction, the light beam 212 enters the converging piece 22 from the light incident surface 222 of the converging piece 22, and is transmitted to the light uniformizing piece 23 from the other side after being converged, and the converged light beam is atomized and uniformly diffused to an irradiated object by the light uniformizing piece 23.

With continued reference to fig. 3, the light source 21 is an edge-emitting laser or a distributed feedback laser for emitting a light beam 212.

The condensing member 22 is provided at one side of the light source 21 to condense the light beam 212 emitted from the light source 21. In this embodiment, the converging member 22 is semi-cylindrical and is made of quartz.

Wherein, the divergence angle of the light beam 212 emitted by the light source 21 in the fast axis direction is 40 degrees, and the divergence angle of the light beam 212 emitted in the slow axis direction is 10 degrees; after being converged by the converging member 22, the divergence angle of the light beam 212 emitted in the fast axis direction is converged to 10 °, and the divergence angle of the light beam 212 emitted in the slow axis direction is 10 °; that is, the converging part 22 mainly converges the divergence angle of the light beam 212 emitted from the light source 21 in the fast axis direction, and converges the divergence angle of the light beam 212 in the fast axis direction to be close to or equal to the divergence angle in the slow axis direction, so that the light spot uniformly diffused by the light uniformizing part 23 is uniform and has a clear profile.

The light homogenizing element 23 is disposed on a side of the converging element 22 away from the light source 21, and is used for uniformly diffusing the converged light beam 212 to an illuminated object (not shown). In the present embodiment, the light uniforming member 23 is a diffusion sheet.

The heat spreader 24 has a conductive layer 242, the conductive layer 242 including a first layer 2422 and a second layer 2424. A first layer 2422 and a second layer 2424 are disposed on adjacent sides of the heat sink 24. Wherein the light source 21 is disposed at one side of the heat sink 24 and electrically connected to the first layer 2422, and the circuit board 25 is disposed at one side of the heat sink 24 and electrically connected to the second layer 2424.

In the present embodiment, the heat sink 24 is ceramic. The first layer 2422 and the second layer 2424 are formed by a layer of solidified silver paste, in use, the silver paste is coated on two adjacent side surfaces of the heat dissipation element 24 respectively, then the wiring terminal of the light source 21 and the wiring terminal of the circuit board 25 are arranged in the silver paste on the two adjacent side surfaces respectively, after the silver paste is solidified, conduction between the light source 21 and the circuit board 25 can be achieved, and the light source 21 and the circuit board 25 are fixed. It is understood that in other embodiments, the terminals of the light source 21 may be secured to the first layer 2422 and the terminals of the circuit board 25 may be secured to the second layer 2424 by soldering.

In the emitting module 20 of the present embodiment, the light source 21 is disposed on the first layer 2422, and the second layer 2424 is connected to the circuit board 25, so that the size of the emitting module 20 in the horizontal direction is reduced, the structure of the emitting module 20 is more compact, and the miniaturization is achieved. It should be noted that the horizontal direction in this embodiment includes an X-axis direction and/or a Y-axis direction (not shown).

The housing 26 has a substantially rectangular parallelepiped shape. The housing 26 is provided with a second through hole 262, the housing 26 is disposed on the circuit board 25 and blocks one end of the second through hole 262, the light source 21, the converging element 22, the heat dissipating element 24 and the light homogenizing element 23 are all disposed in the second through hole 262, wherein the converging element 22 and the light homogenizing element 23 are disposed on a hole wall of the second through hole 262 at an interval.

In the emitting module 20 of the present embodiment, the hole wall of the second through hole 262 and the circuit board 25 can shield the light source 21, the converging element 22 and the light uniforming element 23, so as to prevent external light from entering the second through hole 262 through the hole wall to affect the converging process of the converging element 22 and the uniform diffusion process of the light uniforming element 23.

The emission module 20 of the embodiment converges the light beam 212 with a wavelength of 1050nm to 1550nm through the converging part 22 and uniformly diffuses the light beam through the light homogenizing part 23 to reach the irradiated object, so that the problem that the light beam with a wavelength of 940nm is easily interfered by external light in the prior art is solved, and the light beam reaching the irradiated object has high quality, low divergence and high propagation speed; and the heat sink 24 may dissipate heat of the light source 21 so that power consumption of the light source 21 is low. In addition, compared with the transmission module 10 in the first embodiment, the transmission module 20 in this embodiment shortens the size space in the horizontal direction, and has a more compact internal structure, which is beneficial to realizing miniaturization.

Third embodiment

Referring to fig. 5, the emission module 30 includes a light source 31, a converging element 32, a light-homogenizing element 33, a heat-dissipating element 34, a circuit board 35 and a housing 36.

Referring to fig. 6, the optical principle of the present embodiment is: the light source 31 emits a light beam 312 in a first direction to the converging part 32, the converging part 32 converges the light beam 312 and emits the converged light beam to the light homogenizing part 33 in a second direction, and the light homogenizing part 33 atomizes and uniformly diffuses the converged light beam to an object to be irradiated. In this embodiment, the first direction is an X-axis direction, and the second direction is a Z-axis direction.

With continued reference to fig. 5, the light source 31 is an edge-emitting laser or a distributed feedback laser for emitting a light beam 312.

The condensing member 32 is provided at one side of the light source 31 to condense the light beam 312 emitted from the light source 31. The converging part 32 has a reflection part 322, and the reflection part 322 is used for reflecting the converged light beam 312 to the light uniformizing part 23. Specifically, the reflection portion 322 is a concave structure that is opaque to light and can converge and reflect the light beam 312.

In the emitting module 30 of this embodiment, the converging part 32 can converge the light beam 312 emitted from the light source 31 from the first direction and then reflect the light beam to the light homogenizing part 33 in the second direction, so as to reduce the size of the emitting module 30 in the horizontal direction and the vertical direction, so that the emitting module 30 has a more compact structure, and the characteristic of miniaturization is realized. It should be noted that the horizontal direction in this embodiment includes an X-axis direction and/or a Y-axis direction (not shown), and the vertical direction is a Z-axis direction.

Wherein, the divergence angle of the light beam 312 emitted by the light source 31 in the fast axis direction is 40 degrees, and the divergence angle of the light beam 312 emitted in the slow axis direction is 10 degrees; after being converged by the converging member 32, the divergence angle of the light beam 312 emitted in the fast axis direction is converged to 10 °, and the divergence angle of the light beam 312 emitted in the slow axis direction is 10 °; that is, the converging part 32 mainly converges the divergence angle of the light beam 312 emitted from the light source 31 in the fast axis direction, and converges the divergence angle of the light beam 312 in the fast axis direction to be close to or equal to the divergence angle in the slow axis direction, so that the light spot uniformly diffused by the light uniformizer 13 is uniform and has a clear profile.

The light uniformizer 33 is disposed opposite to the condenser 32, and is used for uniformly diffusing the condensed light beam 312 to an object (not shown). In this embodiment, the light uniformizer 33 is a diffusion sheet.

The heat sink 34 has a conductive layer 342, and the light source 31 is disposed at one side of the heat sink 34 and electrically connected to the conductive layer 342. In the present embodiment, the heat sink 34 is ceramic. The conductive layer 342 is formed by a layer of solidified silver paste, and when the conductive layer is used, the silver paste is firstly coated on one surface of the heat dissipation member 34, then the wiring terminal of the light source 31 and the wiring terminal of the circuit board 35 are respectively arranged in the silver paste, and after the silver paste is fixed, the conduction between the light source 31 and the circuit board 35 can be realized, and the light source 31 and the circuit board 35 are fixed.

The circuit board 35 is disposed on one side of the heat sink 14 and electrically connected to the conductive layer 342, wherein the circuit board 35 and the light source 31 are disposed on the same side of the heat sink 34, and the circuit board 35 is spaced apart from the light source 31. It is understood that in other embodiments, the terminals of light source 31 and the terminals of circuit board 35 may be secured to conductive layer 342 by soldering.

The housing 36 includes a receptacle 362 and a floor 364. The accommodating portion 362 is disposed on the bottom plate 364 and has a third through hole 366, the third through hole 366 includes a first hole 3662 and a second hole 3664 which are communicated with each other, the first hole 3662 extends along the first direction, and the second hole 3664 extends along the second direction. The heat dissipation member 34 is disposed on the bottom plate 364 and located at one end of the first hole 3662, wherein a portion of the heat dissipation member 34 is located in the first hole 3662, another portion of the heat dissipation member 34 is located outside the first hole 3662, the light source 31 is disposed on the heat dissipation member 34 and located in the first hole 3662, and the circuit board 35 is disposed on the heat dissipation member 34 and located outside the first hole 3662. The other end of first bore 3662 meets second bore 3664, where converging piece 32 is located. The light uniforming member 33 is disposed in the second hole 3664.

The emission module 30 converges the light beam 312 with a wavelength of 1050nm-1550nm through the converging part 32 and uniformly diffuses the light beam through the light homogenizing part 33 to reach the irradiated object, so that the problem that the light beam with a wavelength of 940nm is easily interfered by external light in the prior art is solved, and the light beam reaching the irradiated object has high quality, low divergence and high propagation speed; and the heat sink 34 may dissipate heat of the light source 31 so that power consumption of the light source 31 is low. In addition, compared with the transmission module 10 in the first and second embodiments, the transmission module 30 in this embodiment shortens the size space in the horizontal direction and the vertical direction, and has a more compact internal structure, which is beneficial to realizing miniaturization.

Fourth embodiment

Referring to fig. 7, the emission module 40 includes a light source 41, a converging element 42, a light-homogenizing element 43, a heat-dissipating element 44, a circuit board 45, and a housing 46.

Referring to fig. 8, the optical principle of the present embodiment is: the light source 41 emits a light beam 412 in a first direction and reaches the converging piece 42, the converging piece 42 converges the light beam 412 and reflects the light beam to the light homogenizing piece 43 in a second direction, and the light homogenizing piece 43 atomizes and uniformly diffuses the converged light beam to an object to be irradiated. In this embodiment, the first direction is an X-axis direction, and the second direction is a Z-axis direction.

With continued reference to fig. 7, the difference from the third embodiment is: the housing 46 includes a receiving portion 462, the receiving portion 462 is disposed on the heat dissipating member 44 and is opened with a third through hole 466, the third through hole 466 includes a first hole 4662 and a second hole 4664 communicated with each other, the first hole 4662 extends along a first direction, and the second hole 4664 extends along a second direction. The light source 41 is disposed on one side of the heat sink 44 and electrically connected to the conductive layer 442, wherein the light source 41 is disposed in the first hole 4662. The circuit board 45 is disposed on one side of the heat sink 44 and electrically connected to the conductive layer 442, wherein the circuit board 45 is disposed outside the first hole 4662, the circuit board 45 and the light source 41 are disposed on the same side of the heat sink 44, and the circuit board 45 and the light source 11 are spaced apart from each other.

Compared to the third embodiment, the emission module 40 in the present embodiment replaces the bottom plate 364 with the heat dissipation member 44, and the light source 41 is disposed on the heat dissipation member 44 with a larger volume, so as to greatly increase the heat conduction efficiency. It is understood that in some embodiments, the heat sink 44 may have the same shape as the bottom plate 364 and the heat sink 34 of the third embodiment.

Fifth embodiment

Referring to fig. 9, the emission module 50 includes a light source 51, a converging element 52, a light-homogenizing element 53, a heat-dissipating element 54, a circuit board 55, and a housing 56. In this embodiment, the first direction is an X-axis direction, and the second direction is a Z-axis direction.

Referring to fig. 10, the optical principle of the present embodiment is: the light source 51 emits a light beam 512 in a first direction to the converging part 52, the converging part 52 converges the light beam 512 and reflects the converged light beam to the light uniformizing part 53 in a second direction, and the converged light beam is atomized and uniformly diffused to an object to be illuminated by the light uniformizing part 53. In this embodiment, the first direction is an X-axis direction, and the second direction is a Z-axis direction.

With continued reference to fig. 9, the difference from the third embodiment is: the housing 56 includes a receiving portion 562, the receiving portion 562 is disposed on the circuit board 55 and defines a third through hole 566, the third through hole 566 includes a first hole 5662 and a second hole 5664 communicated with each other, the first hole 5662 extends along a first direction, and the second hole 5664 extends along a second direction. The conductive layer 542 of the heat sink 54 is adjacent to the circuit board 55, and the heat sink 54 is located at one end of the first hole 5662, wherein the heat sink 54 is partially located in the first hole 5662, another portion of the heat sink 54 is located outside the first hole 5662, the light source 51 is disposed at one side of the heat sink 54 and electrically connected to the conductive layer 542, wherein the light source 51 is located in the first hole 5662, and the circuit board 55 and the light source 51 are disposed at two opposite sides of the heat sink 54.

Compared with the third embodiment, the launch module 50 in this embodiment replaces the bottom plate 364 in the third embodiment with the circuit board 55, so that the size space of the launch module 50 in the horizontal direction is shortened, the internal structure is more compact, and the miniaturization is facilitated. It should be noted that the horizontal direction in this embodiment includes an X-axis direction and/or a Y-axis direction (not shown).

Sixth embodiment

Referring to fig. 11, the emission module 60 includes a light source 61, a converging element 62, a light-homogenizing element 63, a heat-dissipating element 64, a circuit board 65, a housing 66 and a reflecting element 67.

Referring to fig. 12, the optical principle of the present embodiment is: the light source 61 emits a light beam 612 along the first direction and reaches the converging piece 62, the converging piece 62 converges the light beam 612 and then emits the light beam to the reflecting piece 67, the reflecting piece 67 reflects the light beam to the light homogenizing piece 63 in the second direction, and the light homogenizing piece 63 atomizes and uniformly diffuses the light beam to the irradiated object. In this embodiment, the first direction is an X-axis direction, and the second direction is a Z-axis direction.

With continued reference to fig. 11, the light source 61 is an edge-emitting laser or a distributed feedback laser for emitting a light beam 612.

The condensing member 62 is provided at one side of the light source 61 for condensing the light beam 612 emitted from the light source 61.

Wherein, the divergence angle of the light beam 612 emitted by the light source 61 in the fast axis direction is 40 degrees, and the divergence angle of the light beam 612 emitted in the slow axis direction is 10 degrees; after being converged by the converging part 62, the divergence angle of the light beam 612 emitted in the fast axis direction is converged to 10 degrees, and the divergence angle of the light beam 612 emitted in the slow axis direction is 10 degrees; that is, the converging part 62 mainly converges the divergence angle of the light beam 612 emitted by the light source 61 in the fast axis direction, and converges the divergence angle of the light beam 612 in the fast axis direction to be close to or equal to the divergence angle in the slow axis direction, so that the light spot uniformly diffused by the light uniformizing part 63 is uniform and clear in profile.

The light uniformizing element 63 is disposed opposite to the converging element 62, and is used for uniformly diffusing the converged light beam 612 to an object (not shown). In the present embodiment, the light uniformizing member 63 is a diffusion sheet.

The heat sink 64 has a conductive layer 642, and the light source 61 is disposed at one side of the heat sink 64 and electrically connected to the conductive layer 642. In the present embodiment, the heat sink 64 is ceramic. The conductive layer 642 is formed by a layer of solidified silver paste, and in use, the silver paste is firstly coated on one surface of the heat dissipation member 64, then the wiring terminal of the light source 61 and the wiring terminal of the circuit board 65 are respectively arranged in the silver paste, so that the conduction between the light source 61 and the circuit board 65 can be realized after the silver paste is solidified, and the light source 61 and the circuit board 65 are fixed.

The circuit board 65 is disposed on one side of the heat sink 14 and electrically connected to the conductive layer 642, wherein the circuit board 65 and the light source 61 are disposed on the same side of the heat sink 64, and the circuit board 65 and the light source 61 are spaced apart.

The housing 66 includes a receptacle 662 and a floor 664. The accommodating portion 662 is disposed on the bottom plate 664 and defines a third through hole 666, the third through hole 666 includes a first hole 6662 and a second hole 6664 communicated with each other, the first hole 6662 extends along a first direction, and the second hole 6664 extends along a second direction. The heat dissipation member 64 is disposed on the bottom plate 664 and located at one end of the first hole 6662, wherein the heat dissipation member 64 is partially located in the first hole 6662, the other portion of the heat dissipation member 64 is located outside the first hole 6662, the light source 61 is disposed on the heat dissipation member 34 and located in the first hole 6662, the circuit board 65 is disposed on the heat dissipation member 64 and located outside the first hole 6662, and the circuit board 65 and the light source 61 are disposed on the same side of the heat dissipation member 64. The light uniformizing member 63 is disposed in the second hole 6664.

The reflecting member 67 is disposed between the converging member 62 and the light unifying member 63 to reflect the light beam 612 converged by the converging member 62 to the light unifying member 63. Specifically, the other end of the first aperture 6662 meets the second aperture 6664, with the reflective member 67 located at the meeting.

The emission module 60 converges the light beam 612 with the wavelength of 1050nm-1550nm through the converging part 62 and uniformly diffuses the light beam through the light homogenizing part 63 to reach the irradiated object, so that the problem that the light beam with the wavelength of 940nm is easily interfered by external light in the prior art is solved, and the light beam reaching the irradiated object has high quality, low divergence and high propagation speed; and the heat sink 64 may dissipate heat of the light source 61 so that power consumption of the light source 61 is low. In addition, compared with the transmission module 60 in the first embodiment and the second embodiment, the transmission module 60 in the present embodiment shortens the size space in the horizontal direction and the vertical direction, and has a more compact internal structure, which is beneficial to realizing miniaturization. It should be noted that the horizontal direction in this embodiment includes an X-axis direction and/or a Y-axis direction (not shown), and the vertical direction is a Z-axis direction.

Seventh embodiment

Referring to fig. 13, the emission module 70 includes a light source 71, a converging element 72, a light-homogenizing element 73, a heat-dissipating element 74, a circuit board 75, a housing 76, and a reflecting element 77.

Referring to fig. 14, the optical principle of the present embodiment is: the light source 71 emits a light beam 712 in a first direction to the converging part 72, the converging part 72 converges the light beam 712 and emits the light beam to the reflecting part 77, the reflecting part 77 reflects the light beam to the light homogenizing part 73 in a second direction, and the light homogenizing part 73 atomizes and uniformly diffuses the light beam to an object to be irradiated. In this embodiment, the first direction is an X-axis direction, and the second direction is a Z-axis direction.

With continued reference to fig. 13, the difference from the sixth embodiment is: the housing 76 includes a receiving portion 762, the receiving portion 762 is disposed on the heat sink 74 and defines a third through hole 766, the third through hole 766 includes a first hole 7662 and a second hole 7664 communicated with each other, the first hole 7662 extends along a first direction, and the second hole 7664 extends along a second direction. The light source 71 is disposed at one side of the heat sink 74 and electrically connected to the conductive layer 742, wherein the light source 71 is disposed in the first hole 7662, the circuit board 75 is disposed at one side of the heat sink 74 and electrically connected to the conductive layer 742, wherein the circuit board 75 is disposed outside the first hole 7662, the circuit board 75 and the light source 71 are disposed at the same side of the heat sink 74, and the circuit board 75 and the light source 71 are disposed separately.

Compared to the sixth embodiment, the emission module 70 in the present embodiment replaces the bottom plate 664 of the sixth embodiment with the heat dissipation member 74, and the heat conduction efficiency of the light source 71 can be greatly increased by disposing the heat dissipation member 74 with a larger volume.

Eighth embodiment

Referring to fig. 15, the emission module 80 includes a light source 81, a converging element 82, a light-homogenizing element 83, a heat-dissipating element 84, a circuit board 85, a housing 86 and a reflecting element 87.

Referring to fig. 16, the optical principle of the present embodiment is: the light source 81 emits a light beam 812 along a first direction and reaches the converging piece 82, the converging piece 82 converges the light beam 812 and then emits the light beam to the reflecting piece 87, the reflecting piece 87 reflects the light beam to the light homogenizing piece 83 in a second direction, and the light homogenizing piece 83 atomizes and uniformly diffuses the light beam to an object to be irradiated. In this embodiment, the first direction is an X-axis direction, and the second direction is a Z-axis direction.

With continued reference to fig. 15, the difference from the sixth embodiment is: the housing 86 includes an accommodating portion 862, the accommodating portion 862 is disposed on the circuit board 85 and defines a third through hole 866, the third through hole 866 includes a first hole 8662 and a second hole 8664 that are communicated with each other, the first hole 8662 extends along a first direction, and the second hole 8664 extends along a second direction. The conductive layer 842 of the heat dissipation member 84 is disposed on the circuit board 85, and the heat dissipation member 84 is located at one end of the first hole 8662, wherein a portion of the heat dissipation member 84 is located inside the first hole 8662, another portion of the heat dissipation member 84 is located outside the first hole 8662, and the light source 81 is disposed on the heat dissipation member 84 and located inside the first hole 8662. The circuit board 85 and the light source 81 are disposed on opposite sides of the heat sink 84.

Compared with the sixth embodiment, in the emitter module 80 of the present embodiment, the bottom plate 664 of the sixth embodiment is replaced with the circuit board 85, so that the size space of the emitter module 80 in the horizontal direction is shortened, the internal structure is more compact, and the miniaturization is facilitated. It should be noted that the horizontal direction in this embodiment includes an X-axis direction and/or a Y-axis direction (not shown).

Referring to fig. 17, the transmitting module 10 according to the embodiment of the present invention can be applied to the camera 100 according to the embodiment of the present invention. The camera 100 includes a lens 90 and the transmitting module 10 of any of the above embodiments. The emission module 10 is installed at one side of the lens 90. The camera 100 may be a time-of-flight ranging module, and the distance between the camera 100 and the object to be illuminated is determined by detecting the time when the light beam emitted from the emitting module 10 reaches the lens 90 after being emitted by the object to be illuminated, so as to acquire three-dimensional information of the object to be illuminated.

Referring to fig. 17, the camera 100 according to the embodiment of the present invention can be applied to the electronic device 1000 according to the embodiment of the present invention. The electronic device 1000 includes a main body 200 and a camera 100, and the camera 100 is mounted on the main body 200.

The electronic device 1000 of the embodiment of the present invention includes but is not limited to an electronic device supporting imaging, such as a smart phone, a tablet computer, a notebook computer, an electronic book reader, a Portable Multimedia Player (PMP), a portable phone, a video phone, a digital still camera, a mobile medical device, and a wearable device.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A transmitter module, comprising:

the heat dissipation piece is provided with a conducting layer, and the light source is arranged on one side of the heat dissipation piece and is electrically connected with the conducting layer; and

2. The transmit module of claim 1, wherein the transmit module further comprises:

the bracket is provided with a first through hole, and the converging piece and the light homogenizing piece are arranged in the first through hole at intervals; the heat dissipation part is arranged on the bracket, and light beams emitted by the light source are emitted into the first through hole to enter the convergence part and be emitted by the light uniformizing part.

3. The transmit module of claim 2, wherein the transmit module further comprises:

the shading part is connected to the support and forms a shading chamber with the support, and the light source is located in the shading chamber.

4. The transmitter module of claim 3, wherein the circuit board is disposed outside the light-blocking chamber.

5. The transmit module of claim 1, wherein the transmit module further comprises:

the casing, set up in the circuit board, the casing has the second through-hole, the circuit board closing cap the one end of second through-hole, the light source, converge the piece the radiating piece reaches even light piece all is located in the second through-hole.

6. The transmitter module of claim 5, wherein the conductive layer comprises a first layer and a second layer, the first layer and the second layer are respectively disposed on two adjacent sides of the heat spreader, the light source is disposed on the first layer, and the second layer is connected to the circuit board.

7. The transmit module of claim 1, wherein the transmit module further comprises:

and the reflecting piece is arranged between the converging piece and the light homogenizing piece so as to reflect the light beams converged by the converging piece to the light homogenizing piece.

8. The transmitter module of claim 1, wherein the collector has a reflector for reflecting the collected light beam to the homogenizer.

9. A camera, comprising:

a receiving module; and

the transmitter module of any of claims 1-8, wherein the receiver module is disposed on a side of the transmitter module.

10. An electronic device, characterized by comprising the camera head of claim 9.