CN112242641A - Laser emission module and electronic equipment - Google Patents
Laser emission module and electronic equipment Download PDFInfo
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- CN112242641A CN112242641A CN202011511227.4A CN202011511227A CN112242641A CN 112242641 A CN112242641 A CN 112242641A CN 202011511227 A CN202011511227 A CN 202011511227A CN 112242641 A CN112242641 A CN 112242641A
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- optical element
- laser emission
- diffractive optical
- emission module
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/026—Monolithically integrated components, e.g. waveguides, monitoring photo-detectors, drivers
- H01S5/0261—Non-optical elements, e.g. laser driver components, heaters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/026—Monolithically integrated components, e.g. waveguides, monitoring photo-detectors, drivers
Abstract
The utility model relates to a laser emission module and electronic equipment, wherein, the laser emission module is including base and the casing that is used for enclosing into the installation cavity, luminous component, lens subassembly and diffraction optical element set gradually in the installation cavity along the direction of height of laser emission module, diffraction optical element's protection circuit's positive pole is through first connecting piece and base electric connection, the negative pole passes through second connecting piece and base electric connection, and along the width or the length direction of laser emission module, first connecting piece and second connecting piece are located diffraction optical element's relative both sides respectively with protection circuit's electric connection position, the casing is set in to at least part of connecting piece. The structure that can make laser emission module through such design is more reasonable, reduces the shared space of connecting piece, is favorable to the miniaturized design of laser emission module, accords with actual user demand more.
Description
Technical Field
The application relates to the technical field of electronic products, in particular to a laser emission module and electronic equipment.
Background
With the development of science and technology, more and more electronic devices with imaging functions are widely applied to daily life and work of people, bring great convenience to daily life and work of people, and become an indispensable important tool for people at present.
The Time of flight (TOF) camera module is a common depth camera module, and can be used for measuring depth of field (depth) or distance information, and can realize a three-dimensional imaging or distance detection function of an electronic device on a target. The laser emission module generally includes two sub-modules, one of which is a light emission module for emitting light for measurement toward a target object, and the other is a light sensing module (also called an image sensing module), and the two modules can be assembled to a terminal after being combined into a whole module, and can also be assembled to the terminal respectively.
Generally, along the height direction of the laser emission module, a Diffractive Optical Element (DOE), a collimating mirror, and a ceramic base are sequentially disposed, wherein the Diffractive Optical element has a positive pin and a negative pin, and the positive and negative pins extend along the height direction of the laser emission module, so that the Diffractive Optical element can be electrically connected to the ceramic base. In general, the exhaust holes and the positive and negative pins of the diffractive optical element are respectively located at two opposite ends of the laser emission module, and meanwhile, in order to facilitate connection between the positive and negative pins and corresponding areas of the base and avoidance of other components, the positive and negative pins need to be bent for multiple times, so that the space occupied by the positive and negative pins is large, and the size of the laser emission module is large.
Disclosure of Invention
The application provides a laser emission module and electronic equipment for reduce the volume of laser emission module.
The application provides a laser emission module, the laser emission module includes:
a base;
the shell is connected with the base and encloses a mounting cavity, and a connecting piece is embedded in the shell;
a lens assembly mounted to the mounting cavity;
the light-emitting part is mounted on the base and is positioned in the mounting cavity;
the diffractive optical element is positioned on one side, away from the light-emitting component, of the lens component and is provided with a protection circuit;
the connecting piece comprises a first connecting piece and a second connecting piece, the positive pole of the protection circuit is electrically connected with the base through the first connecting piece, the negative pole of the protection circuit is electrically connected with the base through the second connecting piece, and the electrical connection positions of the first connecting piece and the second connecting piece and the protection circuit are respectively positioned on two opposite sides of the diffractive optical element along the length direction or the width direction of the laser emission module.
In a possible embodiment, in a projection along the height direction of the laser emission module, the connection position of the first connection element and the protection circuit and the connection position of the second connection element and the protection circuit are located outside the projection range of the lens assembly.
In a possible embodiment, an end of the housing away from the diffractive optical element has a recess for avoiding an electrical connection position of the connector and the base.
In a possible embodiment, each connecting element comprises at least a first connecting section and a second connecting section, which are connected to each other and have a predetermined angle.
In one possible embodiment, the first connecting section and the second connecting section are perpendicular to each other.
In a possible implementation manner, along the height direction of the laser emission module, the first connection section and the diffractive optical element are located at the same height and are used for being electrically connected with an electrode of the diffractive optical element.
In a possible implementation manner, the connector further includes a third connector, the third connector is electrically connected to the second connector, and the third connector is used for electrostatic protection.
In a possible embodiment, the upper end surface of the third connecting piece is higher than the first connecting piece and the second connecting piece along the height direction of the laser emission module.
In one possible embodiment, the diffractive optical element is electrically connected to the connector by a conductive adhesive.
In one possible embodiment, the conductive adhesive is conductive silver paste.
In one possible embodiment, the diffractive optical element comprises a first surface and a second surface, the first surface being located on a side of the diffractive optical element facing the lens assembly, and the first surface and the second surface being located on opposite sides of the diffractive optical element;
the first surface is provided with a working circuit, and the second surface is provided with the protection circuit.
In one possible embodiment, the protection circuit is a transparent protection circuit.
In one possible embodiment, the material of the protection circuit is indium tin oxide.
In one possible embodiment, the base is a ceramic material.
In a possible implementation manner, the laser emission module further includes a photosensitive element, and the photosensitive element is mounted in the mounting cavity and used for detecting the light intensity of the light emitting component.
In one possible embodiment, the light sensing element is located on a side of the diffractive optical element facing the light emitting part for receiving the reflected light of the diffractive optical element.
The application also provides an electronic device, which comprises the laser emission module.
The utility model relates to a laser emission module and electronic equipment, wherein, the laser emission module is including base and the casing that is used for enclosing into the installation cavity, luminous component, lens subassembly and diffraction optical element set gradually in the installation cavity along the direction of height of laser emission module, diffraction optical element's protection circuit's positive pole is through first connecting piece and base electric connection, the negative pole passes through second connecting piece and base electric connection, and along the width or the length direction of laser emission module, first connecting piece and second connecting piece are located diffraction optical element's relative both sides respectively with protection circuit's electric connection position, the casing is set in to at least part of connecting piece. The structure that can make laser emission module through such design is more reasonable, reduces the shared space of connecting piece, is favorable to the miniaturized design of laser emission module, accords with actual user demand more.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
Fig. 1 is a schematic structural diagram of a laser emitting module according to an embodiment of the present disclosure;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
fig. 4 is a side view of fig. 1.
Reference numerals:
1-a base;
2-a shell;
21-a connector;
211-a first connection;
212-a second connector;
213-third connection;
214-a first connection segment;
215-a first connection segment;
22-a through hole;
23-an optical window;
24-a recess;
3-a lens assembly;
4-a light emitting component;
5-a diffractive optical element;
51-a first surface;
52-second surface.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Detailed Description
For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.
It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
With the development of technology, more and more electronic devices with imaging functions are widely applied to daily life and work of people, bring great convenience to daily life and work of people, and become an indispensable important tool for people at present. The TOF camera module is a common depth camera module, can be used for measuring depth of field (depth) or distance information, and can realize the three-dimensional imaging or distance detection function of the electronic equipment on a target. The laser transmitter module generally includes: a DOE, a collimator, a light-Emitting component, a ceramic substrate, and the like, and the light-Emitting component is generally a Vertical-Cavity Surface-Emitting Laser (VCSEL).
Along the direction of height of laser emission module, each part superposes in proper order, because in the course of the work, VCSEL can generate heat, and the inside air of laser emission module is heated the inflation, leads to the atmospheric pressure increase, for balanced atmospheric pressure and promotion radiating efficiency, is provided with the exhaust hole at the casing usually to gas outgoing, and carry out the heat exchange with the external world. Because DOE is far away from the ceramic substrate, therefore, the positive and negative poles of DOE usually need to be electrically connected with the ceramic substrate through metal pins, and in order to avoid other components and extend to the electrically connected position, the metal pins need to be bent for many times, so that the occupied space is large, and the size of the laser emission module is large.
In view of this, the embodiment of the present application provides a laser emission module and an electronic device, which are used for solving the problem that the volume of the laser emission module is large.
As shown in fig. 1, the embodiment of the present application provides a laser emission module, wherein the laser emission module includes a base 1 and a housing 2, and the base 1 and the housing 2 are connected to each other to enclose an installation cavity. As shown in fig. 2, the mounting cavity may be used to mount components such as the light emitting component 4, the lens assembly 3, and the diffractive optical element 5.
Specifically, the light Emitting component 4 may be a Vertical-Cavity Surface-Emitting Laser (VCSEL), the lens component 3 may be a collimating mirror for correcting a Laser beam emitted by the light Emitting component 4 to a proper angle range, the lens component 3 may be formed by stacking a plurality of lenses having the same and/or different structures, and the diffractive optical element 5 is configured to copy a light beam into a multi-component Laser beam, so as to expand a Laser lattice, and thus, the number of lattices satisfies a light path design requirement.
As shown in fig. 2, the light emitting component 4 is installed on the base 1, the lens component 3 is installed in the installation cavity and is located on one side of the light emitting component 4 away from the base 1, the diffractive optical element 5 is disposed on one side of the lens component 3 away from the light emitting component 4, the housing 2 may be provided with an optical window 23, the optical window 23 is communicated with the installation cavity, at least part of the diffractive optical element 5 is located in the optical window 23, and the laser beam replicated by the diffractive optical element 5 is transmitted to the outside of the laser emission module through the optical window 23.
Casing 2 is provided with through-hole 22, and through-hole 22 is used for balancing the interior outer atmospheric pressure of laser emission module and promoting the radiating efficiency of laser emission module, specifically, along the direction of height of laser emission module, through-hole 22 can set up the upper surface at casing 2 to extend along the direction of height, through-hole 22 can be located one side of optical window 23.
As shown in fig. 3, a connecting member 21 is embedded in the housing 2, and the connecting member 21 may be made of a conductive material such as metal. The housing 2 may be formed by injection molding. Such a design can facilitate the processing of the housing 2 and the insertion of the connecting member 21 into the housing 2 during the processing, which is more suitable for practical use. The connecting member 21 may include a first connecting member 211 and a second connecting member 212, and specifically, the diffractive optical element 5 is provided with a protection circuit, an anode of the protection circuit is electrically connected to the base 1 through the first connecting member 211, and a cathode of the protection circuit is electrically connected to the base 1 through the second connecting member 212. The positions of the electrical connection between the first connecting element 211 and the second connecting element 212 and the base 1 are located at two opposite sides of the through hole 22.
The connecting member 21 may have a recess for avoiding the mold during processing, so that the structure of the connecting member 21 is more reasonable.
Along the width direction Y or the length direction X of the laser emission module, the electrical connection positions of the first connection element 211 and the protection circuit and the electrical connection positions of the second connection element 212 and the protection circuit are located on two opposite sides of the diffractive optical element, specifically, as shown in fig. 1, in a specific embodiment, the connection positions of the first connection element 211 and the second connection element 212 and the protection circuit are respectively located on two opposite sides of the diffractive optical element 5 along the width direction Y of the laser emission module.
In general, in the projection along the height direction Z of the laser emission module, the projection of the lens assembly 3 is circular, the projection of the diffractive optical element 5 is rectangular, and the projection of the lens assembly 3 is located within the projection range of the diffractive optical element 5, so the corner position of the diffractive optical element 5, that is, the position where the projection of the diffractive optical element 5 does not coincide with the projection of the lens assembly 3 can be used for the connection of the connector 21 with the electrode of the protection circuit. Such design can promote the utilization ratio in space effectively to the inner space that makes the laser emission module is compacter, thereby is favorable to the laser emission module to carry out miniaturized design.
Specifically, as shown in fig. 2, in one possible embodiment, the through hole 22 is provided on one side of the diffractive optical element 5 in the length direction X of the diffractive optical element 5, and as shown in fig. 1 and 4, the connection positions of the first and second connectors 211 and 212 to the base 1 are located on opposite sides of the through hole 22 in the width direction Y of the diffractive optical element 5.
In general, the diameter of the through hole 22 is smaller than the width of the diffractive optical element 5, and therefore, there is enough space left in the width direction Y for disposing the connection member 21, and at least parts of the connection members 21 can be disposed on opposite sides of the through hole 22. Can promote the space utilization of laser emission module through such design, make establishing of connecting piece 21 the position more reasonable, inlay the scheme of establishing the casing 2 of one side of keeping away from through-hole 22 at diffractive optical element 5 in comparison with connecting piece 21, the scheme that this application embodiment provided can reduce diffractive optical element 5 and keep away from the thickness of casing 2 of one side of through-hole 22, thereby reduce the whole volume of casing 2, and then reduce the volume of laser emission module, be favorable to realizing the miniaturized design of laser emission module, accord with actual user demand more.
Portions of the first connection member 211 and the second connection member 212 may be located at the optical window 23 of the housing 2 so that the connection member 21 is connected to the electrode of the protection circuit of the diffractive optical element. Since the distance between the connection member 21 and the electrode of the protection circuit is short, the electrical connection can be achieved by the conductive adhesive.
Compared with connection modes such as welding, the mode of adopting the conductive adhesive is more convenient in actual operation, the difficulty is lower, the processing efficiency can be effectively improved, and the actual use requirement is met more.
In particular, the conductive adhesive can be conductive silver adhesive.
The conductive silver adhesive has the advantages of high curing speed, low resistance, high reliability, long service life and convenience in use, and more meets the actual use requirements.
As shown in fig. 1, in one possible embodiment, an area of an end of the housing 2 close to the base 1 is smaller than an area of the base 1, and specifically, in a projection along the height direction Z of the laser emission module, a projection area of an end of the housing 2 close to the base 1 is smaller than a projection area of the base 1 and is located within a projection range of the base 1. The positions of the base 1 for electrically connecting with the first connecting element 211 and the second connecting element 212 are located outside the projection range of one end of the housing 2 close to the base 1.
In general, the lens assembly 3 is composed of a plurality of lenses, in the projection along the height direction Z of the laser emission module, the projection of the lens assembly 3 is circular, the projection of the diffractive optical element 5 is square, and the projection area of the lens assembly 3 is located within the projection range of the diffractive optical element 5. Through such design for lens subassembly 3 can dodge the corner position of diffractive optical element 5, simultaneously, because the appearance of lens subassembly 3 is approximately cylindrically, consequently can also dodge the corner position of base 1, thereby be convenient for diffractive optical element 5 and the corner position department of base 1 are connected, with the structure of optimizing the laser emission module.
Through such design can make first connecting piece 211 and second connecting piece 212 respectively with diffraction optical element 5 and base 1 not carry out electric connection with the position of lens subassembly 3 coincidence, when connecting base 1 and diffraction optical element 5's protection circuit for the overall structure of laser emission module is compacter, thereby is favorable to realizing the miniaturization of laser emission module.
Specifically, in one possible embodiment, the base 1 may be a rectangular parallelepiped structure, and the structure of the housing 2 may be designed according to the structures of the diffractive optical element 5 and the lens assembly 3, for example, the structure of the housing 2 may be divided into two parts, the upper part is approximately square for installing the diffractive optical element 5, and the lower part is approximately cylindrical or has an arc surface so as to avoid the corner position of the base 1, so that the connecting member 21 is connected with the base 1.
As shown in fig. 1, in one possible embodiment, the housing 2 has a recess 24, and the recess 24 is located at an end of the housing 2 close to the base 1 and is recessed toward the inside of the housing 2 to avoid a corner position of the base 1, i.e., an electrical connection position of the connector 21 and the base 1. A portion of the connecting member 21 can extend out of the housing 2 and is located in the recess 24, and the connecting member 21 is used for electrically connecting with the base 1.
By such a design, the volume of the housing 2 can be reduced, and the interference of the housing 2 with the electrical connection position of the connector 21 and the base 1 can be reduced. The part of the connecting piece 21 extends out of the shell 2, so that the connecting piece 21 and the base 1 can be electrically connected conveniently during processing, and the operation difficulty is reduced. The connection may be by soldering, or by bonding with a conductive adhesive.
As shown in fig. 3, in a possible embodiment, the connecting member 21 includes at least a first connecting section 214 and a second connecting section 215, and the first connecting section 214 and the second connecting section 215 are connected to each other and have a predetermined included angle. Specifically, the first connecting section 214 is used for electrically connecting with the diffractive optical element 5, and the second connecting section 215 is used for electrically connecting with the base 1.
In this way, the connector 21 can electrically connect the diffractive optical element 5 and the base 1, and can avoid other components.
In one possible embodiment, as shown in fig. 3, the first connecting section 214 and the second connecting section 215 are arranged perpendicular to each other.
Can reduce connecting piece 21's the number of times of buckling through such design to make connecting piece 21's structure more reasonable, can reduce the space that connecting piece 21 occupy, be favorable to reducing the thickness of casing 2's lateral wall, thereby reduce casing 2's volume, and then the laser emission module miniaturization of being convenient for accords with actual user demand more.
In a possible embodiment, the first connecting section 214 is used to electrically connect with the electrode of the diffractive optical element 5, the second connecting section 215 is used to electrically connect with the base 1, and the connecting manner of the second connecting section 215 and the base 1 may be soldering. Wherein the first connecting section 214 and the diffractive optical element 5 are located at the same height along the height direction Z of the laser emission module.
The first connecting section 214 can be electrically connected with the electrode of the diffractive optical element 5 by the design, so that the connection between the connecting piece 21 and the diffractive optical element 5 is realized by the conductive silver adhesive.
It should be noted that, the first connecting section 214 and the diffractive optical element 5 are located at the same height, and are not located at the same height in an absolute sense, but they are located at approximately the same height, or the difference in height between the two is small.
As shown in fig. 1, in a possible embodiment, the connecting member 21 further includes a third connecting member 213, and the third connecting member 213 is electrically connected to the second connecting member 212. When static electricity is generated, the third connector 213 can lead the generated static electricity into the second connector 212, and the second connector 212 is connected with the negative electrode of the diffractive optical element 5, so that the design can reduce the influence of the static electricity on the diffractive optical element 5 and reduce the impact of the generated static electricity on the diffractive optical element 5, and the third connector 213 can play a role in electrostatic protection, prolong the service life of the diffractive optical element 5 and reduce the possibility of failure caused by the static electricity impact.
Specifically, as shown in fig. 1, in one possible embodiment, the upper end surface of the third connecting member 213 is higher than the first connecting member 211 and the second connecting member 212 in the height direction Z of the laser emission module.
By such a design, the third connection member 213 is beneficial to electrostatic protection, and when static electricity is generated, since the upper end surface of the third connection member 213 is higher than the first connection member 211 and the second connection member 212, the static electricity will hit the third connection member 213 first, so that the static electricity is introduced into the negative electrode circuit through the third connection member 213, and the influence of the static electricity on the diffractive optical element 5 is reduced. Such a design can enhance the protective effect of the third connecting member 213 on the diffractive optical element 5.
In a possible embodiment, a portion of the third connecting member 213 is embedded in the housing 2, and the portion embedded in the housing 2 is electrically connected to the second connecting member 212, and at least a portion of the upper end surface is exposed outside the housing 2 for receiving static electricity.
Usually, casing 2 adopts insulating material injection molding such as plastic to form, inlays connecting piece 21 and locates casing 2 and can effectively reduce connecting piece 21 to the influence of electric current in the conduction process, can also reduce the possibility of occurence of failure such as electric leakage simultaneously, and then promotes the security and the reliability of laser emission module.
As shown in fig. 2, in one possible embodiment, the diffractive optical element 5 comprises a first surface 51 and a second surface 52, wherein the first surface 51 and the second surface 52 are located at opposite sides of the diffractive optical element 5, in particular, the first surface 51 is located at a side of the diffractive optical element 5 facing the lens assembly 3 and is provided with an operating circuit; the second surface 52 is located on the side of the diffractive optical element 5 remote from the lens assembly 3 and is provided with a protective circuit.
Compare in the scheme that sets up working circuit and protection circuit respectively at different parts, this application embodiment can reduce the part quantity of laser emission module through setting up working circuit and protection circuit in diffraction optical element 5's relative both sides simultaneously to reduce the occupation to the space of installation cavity, so that reduce the volume of laser emission module.
Specifically, the protection circuit is connected to the control circuit of the light emitting unit 4, and when the diffractive optical element 5 fails to cause chipping, the protection circuit provided in the diffractive optical element 5 may have a failure such as disconnection or short circuit, and when the protection circuit fails, the control circuit may cut off the power supply of the light emitting unit 4 to stop the light emitting unit 4, thereby performing a protective function. When working circuit and protection circuit set up respectively in different parts, the protection circuit detects that diffraction optical element 5 breaks down and cuts off the process of connecting and can have certain time delay condition, is unfavorable for protecting other parts of laser emission module and by the shooting object, for example, when the shooting object is the people, if diffraction optical element 5 takes place cracked and can't in time close when giving out light part 4, the laser that gives out light part 4 and send causes the injury to eyes easily. And this application is through setting up working circuit and protection circuit simultaneously with diffraction optical element 5, when diffraction optical element 5 takes place fragmentation, the protection circuit can take place the circumstances such as open circuit, short circuit at the very first time, makes it inefficacy, and then closes light emitting component 4 to can make the reply in the shortest time, with the injury that reduces laser to the shooting object.
In particular, in one possible embodiment, the protection circuit is a transparent protection circuit.
Can reduce the influence of protection circuit to the propagation of light through such design, when playing the guard action, can also make the normal work of laser emission module, accord with actual user demand more.
In one possible embodiment, the material of the protection circuit is Indium Tin Oxide (ITO).
Indium tin oxide has good heat resistance, and is also weak and weak, so that when the diffractive optical element 5 is damaged, the indium tin oxide circuit can be broken at the first time, which results in the protection circuit being broken to cut off the power supply of the light emitting part 4.
In a possible embodiment, the material of the base 1 is ceramic.
The light emitting component 4 is mounted on the base 1, and typically, the light emitting component 4 is a VCSEL, which generates a large amount of heat during operation, and the VCSEL is typically a porous structure and is easily deformed and broken. Ceramic material has the radiating efficiency higher, and the better advantage of thermal stability can promote radiating efficiency to reduce the condition emergence that VCSEL chip thermal deformation, promote the job stabilization nature of laser emission module, accord with actual user demand more.
In particular, in a possible embodiment, the laser emission module may further include a photosensitive element, and the photosensitive element is mounted in the mounting cavity and used for detecting the light intensity of the light emitting component 4.
The photosensitive element detects when light intensity is less than or higher than the predetermined threshold value through the intensity of the laser that detects light emitting component 4, can feed back the signal to the control circuit who sends out light emitting component 4 when photosensitive element detects the light intensity, and control circuit adjusts the luminous intensity who sends out light emitting component 4 according to photosensitive element's testing result to make the power of sending out light emitting component 4 can be stabilized in predetermined scope, promote the stability of laser emission module work.
In a possible embodiment, the photosensitive element may be disposed around the light emitting component 4 for receiving the light reflected back by the diffractive optical element 5, and when the photosensitive element can receive the reflected light, the laser emitting module operates normally; when the photosensitive element cannot receive the reflected light, the diffractive optical element 5 may be cracked, dropped, and the like, the control circuit of the light emitting part 4 may determine whether the diffractive optical element 5 is in a normal state according to the detection result of the photosensitive element, and when the diffractive optical element 5 has a problem, the power supply of the light emitting part 4 may be cut off in time to protect the shooting object.
Based on the laser emission module related to the above embodiments, the embodiment of the present application further provides an electronic device, where the electronic device may include the laser emission module related to any of the above embodiments. Since the laser emission module has the above technical effects, the electronic device including the laser emission module also has corresponding technical effects, which are not described herein again.
The embodiment of the application provides a laser emission module and electronic equipment, wherein, the laser emission module is including base 1 and the casing 2 that is used for enclosing into the installation cavity, luminous component 4, lens subassembly 3 and diffractive optical element 5 set gradually in the installation cavity along the direction of height Z of laser emission module, diffractive optical element 5's protection circuit's positive pole is through first connecting piece 211 and 1 electric connection of base, the negative pole passes through second connecting piece 212 and 1 electric connection of base, and along the width direction Y or the length direction X of laser emission module, first connecting piece 211 and second connecting piece 212 are located diffractive optical element 5's relative both sides respectively with protection circuit's electric connection position, casing 2 is set in to at least part of connecting piece 21. The structure that can make laser emission module through such design is more reasonable, reduces the shared space of connecting piece 21, is favorable to the miniaturized design of laser emission module, accords with actual user demand more.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (17)
1. The utility model provides a laser emission module which characterized in that, laser emission module includes:
a base (1);
the shell (2) is connected with the base (1) and encloses a mounting cavity, and a connecting piece (21) is embedded in the shell (2);
the lens assembly (3), the said lens assembly (3) is mounted to the said installation cavity;
the light-emitting component (4), the light-emitting component (4) is installed on the base (1) and located in the installation cavity;
a diffractive optical element (5), wherein the diffractive optical element (5) is positioned on one side of the lens component (3) far away from the light-emitting component (4), and the diffractive optical element (5) is provided with a protection circuit;
the connecting piece (21) comprises a first connecting piece (211) and a second connecting piece (212), the positive pole of the protection circuit is electrically connected with the base (1) through the first connecting piece (211), the negative pole of the protection circuit is electrically connected with the base (1) through the second connecting piece (212), and the electrically connected positions of the first connecting piece (211) and the second connecting piece (212) and the protection circuit are respectively located on two opposite sides of the diffractive optical element (5) along the length direction or the width direction of the laser emission module.
2. The laser transmitter module as claimed in claim 1, wherein in a projection along a height direction of the laser transmitter module, an electrical connection position between the first connector (211) and the protection circuit and an electrical connection position between the second connector (212) and the protection circuit are located outside a projection range of the lens assembly (3).
3. The laser emission module according to claim 2, wherein an end of the housing (2) away from the diffractive optical element (5) is provided with a recess (24), and the recess (24) is used for avoiding an electrical connection position of the connector (21) and the base (1).
4. The laser transmitter module as claimed in claim 1, wherein each of the connectors (21) comprises at least a first connecting section (214) and a second connecting section (215), and the first connecting section (214) and the second connecting section (215) are connected to each other and have a predetermined included angle.
5. The laser transmitter module of claim 4, wherein the first connecting section (214) and the second connecting section (215) are perpendicular to each other.
6. The laser transmitter module according to claim 4, wherein the first connecting section (214) is located at the same height as the diffractive optical element (5) along the height direction of the laser transmitter module and is used for electrically connecting with the electrode of the diffractive optical element (5).
7. The laser transmitter module as claimed in claim 1, wherein the connector (21) further comprises a third connector (213), the third connector (213) is electrically connected to the second connector (212), and the third connector (213) is used for electrostatic protection.
8. The laser transmitter module as claimed in claim 7, wherein the upper end surface of the third connecting member (213) is located higher than the first connecting member (211) and the second connecting member (212) in the height direction of the laser transmitter module.
9. The laser emission module according to any one of claims 1 to 8, wherein the electrodes of the diffractive optical element (5) are electrically connected to the connector (21) by a conductive adhesive.
10. The laser emitter module of claim 9, wherein the conductive adhesive is a conductive silver paste.
11. The laser emission module according to any one of claims 1 to 8, wherein the diffractive optical element (5) comprises a first surface (51) and a second surface (52), the first surface (51) being located on a side of the diffractive optical element (5) facing the lens assembly (3), and the first surface (51) and the second surface (52) being located on opposite sides of the diffractive optical element (5);
the first surface (51) is provided with an operating circuit, and the second surface (52) is provided with the protection circuit.
12. The laser transmitter module of claim 11, wherein the protection circuit is a transparent protection circuit.
13. The laser transmitter module as claimed in claim 12, wherein the material of the protection circuit is indium tin oxide.
14. Laser emission module according to any of claims 1 to 8, characterized in that said base (1) is a ceramic material.
15. The laser emission module according to any one of claims 1 to 8, further comprising a photosensitive element mounted in the mounting cavity for detecting the light intensity of the light emitting component (4).
16. The laser emission module according to claim 15, wherein the light sensing element is located on a side of the diffractive optical element (5) facing the light emitting component (4) for receiving the reflected light of the diffractive optical element (5).
17. An electronic device characterized in that it comprises a laser emission module according to any one of claims 1 to 16.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060023605A1 (en) * | 2004-07-29 | 2006-02-02 | Matsushita Electric Industrial Co., Ltd. | Semiconductor laser device and optical pickup device |
| CN205726354U (en) * | 2016-04-18 | 2016-11-23 | 上海与德通讯技术有限公司 | A kind of circuit board assemblies and electronic equipment |
| CN206976793U (en) * | 2017-07-13 | 2018-02-06 | 北京图来激光科技有限公司 | Semiconductor laser multiaspect patch sealing assembling structure, laser emitting module and its device |
| CN108181777A (en) * | 2018-02-27 | 2018-06-19 | 广东欧珀移动通信有限公司 | Laser projection module, depth camera and electronic device |
| CN108196418A (en) * | 2018-02-27 | 2018-06-22 | 广东欧珀移动通信有限公司 | Laser projection module, depth camera and electronic device |
| CN108767638A (en) * | 2018-04-19 | 2018-11-06 | 信利光电股份有限公司 | Laser emitter and its driving device, driving method and readable storage medium storing program for executing |
| CN108919511A (en) * | 2018-07-25 | 2018-11-30 | 北京小米移动软件有限公司 | Optical devices and equipment |
| CN108988121A (en) * | 2018-07-25 | 2018-12-11 | 北京小米移动软件有限公司 | Optical devices and equipment |
| CN109449746A (en) * | 2018-11-23 | 2019-03-08 | 东莞旺福电子有限公司 | A kind of new pattern laser sensor-packaging structure |
| CN208738608U (en) * | 2018-10-09 | 2019-04-12 | 艾笛森光电股份有限公司 | Human eye protects optical module |
| JP2020009905A (en) * | 2018-07-09 | 2020-01-16 | 大日本印刷株式会社 | Light source package and lighting device |
-
2020
- 2020-12-18 CN CN202011511227.4A patent/CN112242641B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060023605A1 (en) * | 2004-07-29 | 2006-02-02 | Matsushita Electric Industrial Co., Ltd. | Semiconductor laser device and optical pickup device |
| CN205726354U (en) * | 2016-04-18 | 2016-11-23 | 上海与德通讯技术有限公司 | A kind of circuit board assemblies and electronic equipment |
| CN206976793U (en) * | 2017-07-13 | 2018-02-06 | 北京图来激光科技有限公司 | Semiconductor laser multiaspect patch sealing assembling structure, laser emitting module and its device |
| CN108181777A (en) * | 2018-02-27 | 2018-06-19 | 广东欧珀移动通信有限公司 | Laser projection module, depth camera and electronic device |
| CN108196418A (en) * | 2018-02-27 | 2018-06-22 | 广东欧珀移动通信有限公司 | Laser projection module, depth camera and electronic device |
| CN108767638A (en) * | 2018-04-19 | 2018-11-06 | 信利光电股份有限公司 | Laser emitter and its driving device, driving method and readable storage medium storing program for executing |
| JP2020009905A (en) * | 2018-07-09 | 2020-01-16 | 大日本印刷株式会社 | Light source package and lighting device |
| CN108919511A (en) * | 2018-07-25 | 2018-11-30 | 北京小米移动软件有限公司 | Optical devices and equipment |
| CN108988121A (en) * | 2018-07-25 | 2018-12-11 | 北京小米移动软件有限公司 | Optical devices and equipment |
| CN208738608U (en) * | 2018-10-09 | 2019-04-12 | 艾笛森光电股份有限公司 | Human eye protects optical module |
| CN109449746A (en) * | 2018-11-23 | 2019-03-08 | 东莞旺福电子有限公司 | A kind of new pattern laser sensor-packaging structure |
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| Publication number | Publication date |
|---|---|
| CN112242641B (en) | 2022-01-25 |
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