CN211829532U - Laser module - Google Patents
Laser module Download PDFInfo
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- CN211829532U CN211829532U CN202020844682.5U CN202020844682U CN211829532U CN 211829532 U CN211829532 U CN 211829532U CN 202020844682 U CN202020844682 U CN 202020844682U CN 211829532 U CN211829532 U CN 211829532U
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- heat dissipation
- dissipation base
- accommodating space
- laser
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Abstract
A laser module comprises a heat dissipation base, a laser component, an optical component, a temperature sensor, an electrostatic protection component and at least one imaging lens. The laser component is fixed in the heat dissipation base and can emit a laser beam. The optical assembly has a reflection surface, so that the laser beam can be reflected and emitted upwards. The imaging lens can be a focusing lens, a wave lens or a cylindrical lens. The temperature sensor may be a temperature coefficient thermistor (NTC), which can be used to detect the temperature of the laser module to compensate for the optical power. The electrostatic protection component can be used for providing an electrostatic protection function.
Description
Technical Field
The utility model relates to an encapsulation structure especially relates to a laser module.
Background
The laser emitted above (in the vertical direction) the circuit carrier is usually in the form of a conventional Can-Can (TO-Can) package, but the laser has a slow processing speed, a high processing cost, a large volume due TO manual insertion, and a need of pin cutting, which causes inconvenience in use. In addition, in the conventional laser module, the optical power is reduced due to the increase of temperature during the actual use, and the laser module is easily damaged by static electricity.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a laser module is provided to prior art's not enough, its process velocity is fast, the processing cost is low, can beat SMD, small, need not cut the foot, has more the convenience in the use.
The utility model aims to solve the technical problem that still provide a laser module to prior art's not enough, can be used for detecting the temperature of laser module for compensate the luminous power.
The utility model aims to solve the technical problem that still provide a laser module to prior art's not enough, can be used for providing the electrostatic protection function.
In order to solve the above technical problem, the utility model provides a laser module, include: the heat dissipation base is internally provided with an accommodating space, one side of the heat dissipation base is provided with an opening, the opening is communicated with the accommodating space, a fixing surface is formed in the heat dissipation base and is adjacent to the accommodating space, the fixing surface and the opening are positioned on two opposite sides of the accommodating space, the heat dissipation base is provided with an electrode layer, the electrode layer is positioned on the other side of the heat dissipation base, and the electrode layer and the opening are positioned on two opposite sides of the heat dissipation base; the imaging lens is arranged opposite to the opening of the heat dissipation base; the laser assembly is arranged in the accommodating space of the heat dissipation base and is electrically connected with the electrode layer; the optical assembly is fixed on the fixing surface of the heat dissipation base, the optical assembly is arranged in the accommodating space of the heat dissipation base, the optical assembly is provided with a reflecting surface, the reflecting surface is an inclined surface, the laser assembly can emit and output laser beams and irradiate the reflecting surface of the optical assembly, and the laser beams are reflected by the reflecting surface of the optical assembly and are upwards emitted out through the opening of the heat dissipation base and the imaging lens; and the temperature sensor is arranged in the accommodating space of the heat dissipation base, is electrically connected with the electrode layer and can be used for detecting the temperature of the laser module so as to compensate the optical power.
Preferably, the laser assembly is an edge-emitting laser assembly, a carrier is fixed on the fixing surface of the heat dissipation base, and the laser assembly is fixed on the carrier.
Preferably, the temperature sensor is a temperature coefficient thermistor, and the temperature sensor is fixed on the fixing surface of the heat dissipation base.
In order to solve the above technical problem, the utility model also provides a laser module, include: the heat dissipation base is internally provided with an accommodating space, one side of the heat dissipation base is provided with an opening, the opening is communicated with the accommodating space, a fixing surface is formed in the heat dissipation base and is adjacent to the accommodating space, the fixing surface and the opening are positioned on two opposite sides of the accommodating space, the heat dissipation base is provided with an electrode layer, the electrode layer is positioned on the other side of the heat dissipation base, and the electrode layer and the opening are positioned on two opposite sides of the heat dissipation base; the imaging lens is arranged opposite to the opening of the heat dissipation base; the laser assembly is arranged in the accommodating space of the heat dissipation base and is electrically connected with the electrode layer; the optical assembly is fixed on the fixing surface of the heat dissipation base, the optical assembly is arranged in the accommodating space of the heat dissipation base, the optical assembly is provided with a reflecting surface, the reflecting surface is an inclined surface, the laser assembly can emit and output laser beams and irradiate the reflecting surface of the optical assembly, and the laser beams are reflected by the reflecting surface of the optical assembly and are upwards emitted out through the opening of the heat dissipation base and the imaging lens; and the electrostatic protection assembly is arranged in the accommodating space of the heat dissipation base, is electrically connected with the electrode layer and can be used for providing an electrostatic protection function.
Preferably, the laser assembly is an edge-emitting laser assembly, a carrier is fixed on the fixing surface of the heat dissipation base, and the laser assembly is fixed on the carrier.
Preferably, the electrostatic protection component is a zener diode.
In order to solve the above technical problem, the utility model also provides a laser module, include: the heat dissipation base is internally provided with an accommodating space, one side of the heat dissipation base is provided with an opening, the opening is communicated with the accommodating space, a fixing surface is formed in the heat dissipation base and is adjacent to the accommodating space, the fixing surface and the opening are positioned on two opposite sides of the accommodating space, the heat dissipation base is provided with an electrode layer, the electrode layer is positioned on the other side of the heat dissipation base, and the electrode layer and the opening are positioned on two opposite sides of the heat dissipation base; the imaging lens is arranged opposite to the opening of the heat dissipation base; the laser assembly is fixed on the fixing surface of the heat dissipation base, is arranged in the accommodating space of the heat dissipation base, is electrically connected to the electrode layer, and can emit and output laser beams and emit the laser beams upwards through the opening of the heat dissipation base and the imaging lens; and the temperature sensor is arranged in the accommodating space of the heat dissipation base, is electrically connected with the electrode layer and can be used for detecting the temperature of the laser module so as to compensate the optical power.
Preferably, the laser assembly is a surface emitting laser assembly.
Preferably, the temperature sensor is a temperature coefficient thermistor, and the temperature sensor is fixed on the fixing surface of the heat dissipation base.
In order to solve the above technical problem, the utility model also provides a laser module, include: the heat dissipation base is internally provided with an accommodating space, one side of the heat dissipation base is provided with an opening, the opening is communicated with the accommodating space, a fixing surface is formed in the heat dissipation base and is adjacent to the accommodating space, the fixing surface and the opening are positioned on two opposite sides of the accommodating space, the heat dissipation base is provided with an electrode layer, the electrode layer is positioned on the other side of the heat dissipation base, and the electrode layer and the opening are positioned on two opposite sides of the heat dissipation base; the imaging lens is arranged opposite to the opening of the heat dissipation base; the laser assembly is fixed on the fixing surface of the heat dissipation base, is arranged in the accommodating space of the heat dissipation base, is electrically connected to the electrode layer, and can emit and output laser beams and emit the laser beams upwards through the opening of the heat dissipation base and the imaging lens; and the electrostatic protection assembly is arranged in the accommodating space of the heat dissipation base, is electrically connected with the electrode layer and can be used for providing an electrostatic protection function.
Preferably, the electrostatic protection component is a zener diode.
The beneficial effects of the utility model reside in that, the utility model provides a laser module, heat dissipation base have the electrode layer, electrode layer and opening are located the both sides that the heat dissipation base is relative, the laser beam of laser subassembly transmission output CAN be through ejecting TO the back of the opening and the formation of image lens formation of image of heat dissipation base top side, it has the characteristics of jar type (TO-CAN) packaging form, and the setting of electrode layer, CAN form the laser module of SMD form, its process velocity is fast, low in processing cost, CAN beat SMD, small, need not cut the foot, more the convenience in the use. Additionally, the utility model discloses be provided with temperature sensor, can be used for detecting the temperature of laser module for compensate optical power. Additionally, the utility model discloses be provided with the electrostatic protection subassembly, can be used for providing the electrostatic protection function.
For a further understanding of the nature and technical content of the present invention, reference should be made to the following detailed description of the invention and accompanying drawings, which are provided for reference and illustration purposes only and are not intended to limit the invention.
Drawings
Fig. 1 is a schematic view of a laser module according to a first embodiment of the present invention.
Fig. 2 is a schematic diagram of a laser module according to a second embodiment of the present invention.
Fig. 3 is a schematic diagram of a laser module according to a third embodiment of the present invention.
Fig. 4 is a schematic view of a laser module according to a fourth embodiment of the present invention.
Detailed Description
[ first embodiment ]
Referring to fig. 1, the present invention provides a laser module, which includes a heat dissipation base 1, a laser module 2, an optical module 3, a temperature sensor 4 and an imaging lens 7.
The heat dissipation base 1 may be in the form of a ceramic substrate, a Plastic Leaded Chip Carrier (PLCC), or a circuit board, and the form of the heat dissipation base 1 is not limited. An accommodating space 11 is formed in the heat dissipation base 1, and an opening 12 is formed at one side (top side) of the heat dissipation base 1, and the opening 12 is communicated with the accommodating space 11. A fixing surface 13 is formed in the heat dissipation base 1, the fixing surface 13 is adjacent to the accommodating space 11, and the fixing surface 13 and the opening 12 are located at two opposite sides of the accommodating space 11. This heat dissipation base 1 still has an electrode layer 14, and this electrode layer 14 is the conductor to electrically conductive material makes, and this electrode layer 14 is located heat dissipation base 1's opposite side (bottom side), and this electrode layer 14 exposes to outside heat dissipation base 1, and this electrode layer 14 and opening 12 are located heat dissipation base 1 relative both sides, and this electrode layer 14's setting makes the utility model discloses can form the laser module of SMD form.
The laser device (laser diode) 2 may be an edge-emitting laser device, the laser device 2 is disposed in the accommodating space 11 of the heat dissipating base 1, in this embodiment, a carrier plate 5 is fixed on a fixing surface 13 of the heat dissipating base 1, and the laser device 2 is fixed on the carrier plate 5, such that the laser device 2 is disposed in the accommodating space 11 of the heat dissipating base 1 through the carrier plate 5. The laser element 2 is electrically connected to the electrode layer 14.
The optical component 3 is fixed on the fixing surface 13 of the heat dissipation base 1, so that the optical component 3 is disposed in the accommodating space 11 of the heat dissipation base 1, and the carrier 5 and the optical component 3 are fixed on the same surface (the fixing surface 13) of the heat dissipation base 1. The optical element 3 has a reflecting surface 31, the reflecting surface 31 is an inclined surface, the reflecting surface 31 can be tilted at 45 degrees, that is, the reflecting surface 31 can be tilted at the fixing surface 13 of the heat dissipation base 1, and an extending line of the reflecting surface 31 and the fixing surface 13 can form an included angle of 45 degrees. The laser module 2 can emit an output laser beam from one side and irradiate the reflecting surface 31 of the optical module 3, and the laser beam is reflected by the reflecting surface 31 of the optical module 3 to change the path of the output laser beam and is emitted upward through the opening 12 of the heat dissipation base 1. In addition, in the final process, the colloid can be filled in the accommodating space 11 of the heat dissipation base 1 to cover all the components.
In the present embodiment, most of the output laser beam can be reflected by the reflective surface 31, and a small portion of the output laser beam can pass through the reflective surface 31. The laser beam can penetrate the reflective surface 31 to form a monitoring beam, and is received by a photodetector (not shown) disposed in the accommodating space 11 of the heat dissipation base 1.
The imaging lens 7 can be a focusing lens, a wave lens or a cylindrical lens, the structure and the number of the imaging lens 7 are not limited, one, two or more imaging lenses 7 can be provided, for example, two imaging lenses 7 can be provided, including a focusing lens and a wave lens, so that the imaging of the laser beam can have more changes. The imaging lens 7 is disposed opposite to the opening 12 of the heat dissipation base 1, so that when the laser beam is emitted upward through the opening 12 of the heat dissipation base 1, the laser beam can be imaged through the imaging lens 7 to form a light beam with a predetermined shape. For example, the laser beam can be focused or formed into a line shape to emit a horizontal or vertical line of light after the laser beam passes through the imaging lens 7.
In this embodiment, the imaging lens 7 is disposed in a lens holder 8, the lens holder 8 has a light exit hole 81, the light exit hole 81 is disposed in the lens holder 8, the light exit hole 81 penetrates through two ends of the lens holder 8, and the imaging lens 7 is disposed in the light exit hole 81. The lens holder 8 is connected to the heat sink base 1. Therefore, when the laser beam is emitted upward through the opening 12 of the heat dissipation base 1, the laser beam can be imaged through the light exit hole 81 and the imaging lens 7 and then emitted upward.
The Temperature sensor 4 can be a Negative Temperature Coefficient thermistor (NTC), the Temperature sensor 4 is disposed in the accommodating space 11 of the heat dissipating base 1, the Temperature sensor 4 can be fixed on the fixing surface 13 of the heat dissipating base 1 or other positions, and the Temperature sensor 4 is electrically connected to the electrode layer 14. The temperature sensor 4 can be used to detect the temperature of the laser module and adjust the temperature and current of the laser component 2 according to the information of the temperature sensor 4, so as to compensate the optical power and achieve stable optical power output.
[ second embodiment ]
Referring to fig. 2, in the present embodiment, the laser module further includes an electrostatic protection component 6, the electrostatic protection component 6 may be a Zener Diode (Zener Diode), the electrostatic protection component 6 is disposed in the accommodating space 11 of the heat dissipation base 1, the electrostatic protection component 6 may be fixed on the fixing surface 13 of the heat dissipation base 1 or other positions, preferably, the electrostatic protection component 6 is close to the laser component 2, the electrostatic protection component 6 is electrically connected to the electrode layer 14, and the electrostatic protection component 6 can be used to provide an electrostatic protection function. In another embodiment, the temperature sensor 4 may be omitted, only the esd protection component 6 is disposed, and the temperature sensor 4 and the esd protection component 6 may be disposed separately or together.
[ third embodiment, fourth embodiment ]
Referring to fig. 3 and 4, the laser module of the present embodiment includes a heat dissipation base 1, a laser element 2, and a temperature sensor 4. The present embodiment is substantially the same as the first and second embodiments, and the difference is mainly that the optical component 3 in the first and second embodiments is omitted, and the laser component 2 of the present embodiment may be a surface emitting laser component, the laser component 2 is disposed in the accommodating space 11 of the heat dissipation base 1, in the present embodiment, the laser component 2 is directly fixed on the fixing surface 13 of the heat dissipation base 1. The laser assembly 2 can emit an output laser beam from one side (top surface) and emit upward through the opening 12 of the heat sink base 1. In the present embodiment, the electrode layer 14 is located on the other side (bottom side) of the heat dissipation base 1, and the electrode layer 14 and the opening 12 are located on the opposite sides of the heat dissipation base 1. The electrode layer 14 is provided, so that the utility model discloses can form the laser module of SMD form.
In the present embodiment (as shown in fig. 3 and 4), the temperature sensor 4 is disposed in the accommodating space 11 of the heat dissipation base 1, the temperature sensor 4 can be fixed on the fixing surface 13 of the heat dissipation base 1 or other positions, and the temperature sensor 4 is electrically connected to the electrode layer 14. The temperature sensor 4 can be used to detect the temperature of the laser module and adjust the temperature and current of the laser component 2 according to the information of the temperature sensor 4, so as to compensate the optical power and achieve stable optical power output.
In the present embodiment (as shown in fig. 4), the esd protection component 6 is disposed in the accommodating space 11 of the heat dissipation base 1, the esd protection component 6 can be fixed on the fixing surface 13 of the heat dissipation base 1 or other positions, the esd protection component 6 is electrically connected to the electrode layer 14, and the esd protection component 6 can be used to provide an esd protection function. The temperature sensor 4 and the electrostatic protection component 6 can be arranged separately or together.
[ advantageous effects of the embodiments ]
The beneficial effects of the utility model reside in that, the utility model provides a laser module, heat dissipation base have the electrode layer, electrode layer and opening are located the both sides that the heat dissipation base is relative, the laser beam of laser subassembly transmission output CAN be through ejecting TO the back of the opening and the formation of image lens formation of image of heat dissipation base top side, it has the characteristics of jar type (TO-CAN) packaging form, and the setting of electrode layer, CAN form the laser module of SMD form, its process velocity is fast, low in processing cost, CAN beat SMD, small, need not cut the foot, more the convenience in the use. Additionally, the utility model discloses be provided with temperature sensor, can be used for detecting the temperature of laser module for compensate optical power. Additionally, the utility model discloses be provided with the electrostatic protection subassembly, can be used for providing the electrostatic protection function.
The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, so that all equivalent changes in the contents of the specification and drawings are all included in the scope of the present invention, and it is well known that the present invention is well protected.
Claims (11)
1. A laser module, comprising:
the heat dissipation base is internally provided with an accommodating space, one side of the heat dissipation base is provided with an opening, the opening is communicated with the accommodating space, a fixing surface is formed in the heat dissipation base and is adjacent to the accommodating space, the fixing surface and the opening are positioned on two opposite sides of the accommodating space, the heat dissipation base is provided with an electrode layer, the electrode layer is positioned on the other side of the heat dissipation base, and the electrode layer and the opening are positioned on two opposite sides of the heat dissipation base;
the imaging lens is arranged opposite to the opening of the heat dissipation base;
the laser assembly is arranged in the accommodating space of the heat dissipation base and is electrically connected with the electrode layer;
the optical assembly is fixed on the fixing surface of the heat dissipation base, the optical assembly is arranged in the accommodating space of the heat dissipation base, the optical assembly is provided with a reflecting surface, the reflecting surface is an inclined surface, the laser assembly can emit and output laser beams and irradiate the reflecting surface of the optical assembly, and the laser beams are reflected by the reflecting surface of the optical assembly and are upwards emitted out through the opening of the heat dissipation base and the imaging lens; and
the temperature sensor is arranged in the accommodating space of the heat dissipation base, is electrically connected to the electrode layer and can be used for detecting the temperature of the laser module so as to compensate the optical power.
2. The laser module of claim 1, wherein the laser assembly is an edge-emitting laser assembly, a carrier is fixed on the fixing surface of the heat-dissipating base, and the laser assembly is fixed on the carrier.
3. The laser module of claim 1, wherein the temperature sensor is a temperature coefficient thermistor, and the temperature sensor is fixed on the fixing surface of the heat sink base.
4. A laser module, comprising:
the heat dissipation base is internally provided with an accommodating space, one side of the heat dissipation base is provided with an opening, the opening is communicated with the accommodating space, a fixing surface is formed in the heat dissipation base and is adjacent to the accommodating space, the fixing surface and the opening are positioned on two opposite sides of the accommodating space, the heat dissipation base is provided with an electrode layer, the electrode layer is positioned on the other side of the heat dissipation base, and the electrode layer and the opening are positioned on two opposite sides of the heat dissipation base;
the imaging lens is arranged opposite to the opening of the heat dissipation base;
the laser assembly is arranged in the accommodating space of the heat dissipation base and is electrically connected with the electrode layer;
the optical assembly is fixed on the fixing surface of the heat dissipation base, the optical assembly is arranged in the accommodating space of the heat dissipation base, the optical assembly is provided with a reflecting surface, the reflecting surface is an inclined surface, the laser assembly can emit and output laser beams and irradiate the reflecting surface of the optical assembly, and the laser beams are reflected by the reflecting surface of the optical assembly and are upwards emitted out through the opening of the heat dissipation base and the imaging lens; and
the electrostatic protection assembly is arranged in the accommodating space of the heat dissipation base, is electrically connected with the electrode layer and can be used for providing an electrostatic protection function.
5. The laser module of claim 4, wherein the laser element is an edge-emitting laser element, a carrier is fixed on the fixing surface of the heat-dissipating base, and the laser element is fixed on the carrier.
6. A laser module as claimed in claim 4, wherein the electrostatic discharge protection component is a Zener diode.
7. A laser module, comprising:
the heat dissipation base is internally provided with an accommodating space, one side of the heat dissipation base is provided with an opening, the opening is communicated with the accommodating space, a fixing surface is formed in the heat dissipation base and is adjacent to the accommodating space, the fixing surface and the opening are positioned on two opposite sides of the accommodating space, the heat dissipation base is provided with an electrode layer, the electrode layer is positioned on the other side of the heat dissipation base, and the electrode layer and the opening are positioned on two opposite sides of the heat dissipation base;
the imaging lens is arranged opposite to the opening of the heat dissipation base;
the laser assembly is fixed on the fixing surface of the heat dissipation base, is arranged in the accommodating space of the heat dissipation base, is electrically connected to the electrode layer, and can emit and output laser beams and emit the laser beams upwards through the opening of the heat dissipation base and the imaging lens; and
the temperature sensor is arranged in the accommodating space of the heat dissipation base, is electrically connected to the electrode layer and can be used for detecting the temperature of the laser module so as to compensate the optical power.
8. The laser module of claim 7, wherein the laser assembly is a surface emitting laser assembly.
9. The laser module of claim 7, wherein the temperature sensor is a temperature coefficient thermistor, and the temperature sensor is fixed on the fixing surface of the heat sink base.
10. A laser module, comprising:
the heat dissipation base is internally provided with an accommodating space, one side of the heat dissipation base is provided with an opening, the opening is communicated with the accommodating space, a fixing surface is formed in the heat dissipation base and is adjacent to the accommodating space, the fixing surface and the opening are positioned on two opposite sides of the accommodating space, the heat dissipation base is provided with an electrode layer, the electrode layer is positioned on the other side of the heat dissipation base, and the electrode layer and the opening are positioned on two opposite sides of the heat dissipation base;
the imaging lens is arranged opposite to the opening of the heat dissipation base;
the laser assembly is fixed on the fixing surface of the heat dissipation base, is arranged in the accommodating space of the heat dissipation base, is electrically connected to the electrode layer, and can emit and output laser beams and emit the laser beams upwards through the opening of the heat dissipation base and the imaging lens; and
the electrostatic protection assembly is arranged in the accommodating space of the heat dissipation base, is electrically connected with the electrode layer and can be used for providing an electrostatic protection function.
11. A laser module as claimed in claim 10, wherein the electrostatic discharge protection component is a zener diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020844682.5U CN211829532U (en) | 2020-05-19 | 2020-05-19 | Laser module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020844682.5U CN211829532U (en) | 2020-05-19 | 2020-05-19 | Laser module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211829532U true CN211829532U (en) | 2020-10-30 |
Family
ID=73022121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020844682.5U Active CN211829532U (en) | 2020-05-19 | 2020-05-19 | Laser module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211829532U (en) |
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2020
- 2020-05-19 CN CN202020844682.5U patent/CN211829532U/en active Active
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