Secondary temperature control device of laser

Abstract

The utility model relates to the technical field of temperature control devices, and discloses a secondary temperature control device of a laser. The secondary temperature control device for the laser comprises an external cooling fin, a mounting shell, a temperature control circuit board, a first lens, the laser, a thermistor and aerogel, the top of the external cooling fin is fixedly connected with the mounting shell, the mounting shell is filled with the aerogel, the temperature control circuit board is arranged in the aerogel, and the first lens is arranged on the temperature control circuit board. A first lens is slidably arranged in the middle of the temperature control circuit board, a laser is mounted on the temperature control circuit board, a plurality of heat conduction pipes are arranged on the first mounting frame, and second mounting seats are fixedly connected to the front side and the rear side of the first mounting frame. A two-stage temperature control system is jointly constructed through the internal temperature control assembly and the external thermoelectric refrigerating unit and cooling fins, and it is ensured that the core area of the adjustable laser is maintained within the precise specified temperature range.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature control devices and discloses a laser secondary temperature control device. Background Art

[0002] The adjustable laser is a temperature-sensitive device. The temperature change of its core light-emitting component will cause the wavelength of the emitted laser to change. Therefore, temperature control is required to ensure that the laser light-emitting component always works within the required range. The more stable the operating temperature of the adjustable laser, the better.

[0003] In conventional applications, the temperature control requirements of the equipment can usually be met by using a temperature control circuit. However, due to the high requirements for thermal insulation design and the limitations of TEC power, the normal operating temperature range of the adjustable laser is limited. As a result, in some working environments with higher temperature range requirements, the adjustable laser cannot meet the full temperature range working requirements.

[0004] Therefore, a laser secondary temperature control device is needed. Utility Model Content

[0005] In order to overcome the disadvantages of the prior art laser adjustable device that its normal operating temperature range is limited due to its own high requirements for thermal insulation design and the limitation of TEC power, resulting in the adjustable laser failing to meet the full temperature range working requirements in some working occasions with higher temperature range requirements, the utility model provides a laser secondary temperature control device.

[0006] The technical scheme of the utility model is: a laser secondary temperature control device, including an external heat sink, a mounting shell, a temperature control circuit board, a first lens, a laser, a thermistor and an aerogel, the top of the external heat sink is fixedly connected with the mounting shell, the interior of the mounting shell is filled with aerogel, a temperature control circuit board is arranged inside the aerogel, a first lens is slidingly arranged in the middle of the temperature control circuit board, a laser is installed on the temperature control circuit board, and also includes a semiconductor cooling sheet, a first mounting frame, a heat conducting pipe and a second mounting seat, a plurality of heat conducting pipes are arranged on the first mounting frame, the front and rear sides of the first mounting frame are fixedly connected with the second mounting seat, the top of the second mounting seat is connected to the temperature control circuit board, and the bottom of the first mounting frame is fixedly connected with a semiconductor cooling sheet.

[0007] In addition, it is particularly preferred that it further includes a pigtail, a first mounting seat and a second lens, the first mounting seat is fixedly connected to the right side of the mounting shell, the pigtail is connected to the right side of the first mounting seat, and the second lens is arranged at the left end of the pigtail.

[0008] In addition, it is particularly preferred that it also includes thermal grease, a second mounting frame and a condensation plate, thermal grease is embedded in the middle of the external heat dissipation, the thermal grease is tightly connected to the mounting shell and the semiconductor refrigeration plate, the second mounting frame is fixedly connected to the bottom of the thermal grease, and two condensation plates are arranged inside the second mounting frame.

[0009] In addition, it is particularly preferred that an isolator is further included, and the isolator is installed on the temperature control circuit board.

[0010] In addition, it is particularly preferred that a resistance wire is also included, and the resistance wire is connected to the left and right sides of the semiconductor cooling plate.

[0011] In addition, it is particularly preferred that a slide rail and a slider are further included, the temperature control circuit board is fixedly connected with the slide rail, the slider is slidably arranged on the slide rail, and the first lens is placed on the slider.

[0012] 1. A two-level temperature control system is constructed through internal temperature control components and external thermoelectric coolers and heat sinks to ensure that the core area of ​​the adjustable laser is maintained within a precise specified temperature range, thereby ensuring the stable output of the laser wavelength and the long-term reliable operation of the equipment.

[0013] 2. The thermal conductive silicone grease conducts heat from the inside of the entire installation shell and the external heat sink. The conducted heat then contacts the condensation plate to achieve heat exchange and transfer the heat to the outside, thereby achieving the purpose of efficient heat dissipation.

[0014] 3. The isolator is in the on state to prevent the passage of interference signals, and to establish protection measures in advance to avoid signal interference problems that may be encountered in subsequent operations, thereby effectively improving the stability and reliability of the laser. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is a three-dimensional structural cross-sectional view of the external heat sink, pigtail and second lens of the utility model.

[0017] Figure 3 It is a three-dimensional structural cross-sectional view of the damper and thermistor of the utility model.

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the first lens, the slide rail and the slider of the utility model.

[0019] Figure 5 The utility model is a three-dimensional structural schematic diagram of the resistance wire, semiconductor cooling sheet and thermistor.

[0020] Figure 6It is a schematic diagram of the three-dimensional structure of the first installation frame, the heat pipe and the second installation seat of the utility model.

[0021] Figure 7 It is a three-dimensional structural schematic diagram of the thermal conductive silicone grease and the condensation plate of the utility model.

[0022] Among them, the above-mentioned drawings include the following figure marks: 1. external heat sink, 2. mounting shell, 3. pigtail, 4. temperature control circuit board, 5. isolator, 6. first lens, 601, second lens, 7. laser, 8. semiconductor refrigeration plate, 9. resistance wire, 10. first mounting seat, 11. thermistor, 12. first mounting frame, 13. heat pipe, 14. second mounting seat, 15. thermal grease, 16. second mounting frame, 17. condensation plate, 18. slide rail, 19. slider, 20. aerogel. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1: A laser secondary temperature control device, see Figure 1-Figure 6 , including an external heat sink 1, a mounting shell 2, a temperature control circuit board 4, a first lens 6, a laser 7, a thermistor 11 and an aerogel 20. The top of the external heat sink 1 is fixedly connected to the mounting shell 2, and the mounting shell 2 is filled with aerogel 20. The aerogel felt pad is made of nano-silicon dioxide aerogel as the main material and is compounded through a special manufacturing process. It has the advantages of low thermal conductivity, low density, high flexibility, green environmental protection, waterproofness, etc., and has excellent sound insulation and shock absorption performance, which can fully meet the insulation and shockproof requirements of the equipment. A temperature control circuit board 4 is arranged inside the aerogel 20, and a first lens 6 is slidingly arranged in the middle of the temperature control circuit board 4. A laser is arranged on the temperature control circuit board 4 connected by bolts. The device 7 is provided with a plurality of heat-conducting tubes 13 on the first mounting frame 12, the front and rear sides of the first mounting frame 12 are fixedly connected with the second mounting seat 14, the top of the second mounting seat 14 is connected to the temperature control circuit board 4, the bottom of the first mounting frame 12 is fixedly connected with the semiconductor refrigeration sheet 8, the right side of the mounting shell 2 is fixedly connected with the first mounting seat 10, the right side of the first mounting seat 10 is connected with the pigtail 3, the left end of the pigtail 3 is provided with the second lens 601, the temperature control circuit board 4 is fixedly connected with a slide rail 18, the slide rail 18 is slidably provided with a slider 19, the first lens 6 is placed on the slider 19, and the slider 19 is pushed to drive the first lens 6 to move, thereby adjusting the focal length, and the left and right sides of the semiconductor refrigeration sheet 8 are connected with the resistance wire 9.

[0025] When the device is needed, the device is ready. First, the installation shell 2 is fixed at a predetermined position. After the installation is confirmed to be correct, the laser 7 is started. The pump source inside the laser 7 excites the working material to achieve a particle number inversion. In this process, the resonant cavity plays a key role. It promotes and amplifies light of a specific wavelength. Once the required gain condition is reached, the laser is successfully output. It is worth noting that the temperature fluctuation of the light emitting component of the laser 7 will affect the laser wavelength. If the temperature of the component exceeds the upper limit of the preset range, the built-in heat pipe 13 guides the excess heat accumulated in the shell to the outside. At this time, the thermistor 11 plays a monitoring role. When the temperature exceeds the limit, it immediately converts the temperature state into an electrical signal and transmits the signal to the temperature control circuit board 4. The temperature control circuit board 4 regulates the working state of the semiconductor refrigeration chip 8. The semiconductor refrigeration chip 8 cools the upper surface temperature to reduce the temperature, while the lower surface temperature increases. Through the internal temperature control component and the external thermoelectric cooler and heat sink, a secondary temperature control system is jointly constructed to ensure that the core area of ​​the adjustable laser 7 is maintained within a precise specified temperature range, thereby ensuring the stable output of the laser wavelength and the long-term reliable operation of the equipment.

[0026] Example 2: Based on the example, please refer to Figure 3 and Figure 7 A thermal grease 15 is embedded in the middle of the external heat dissipation, and the thermal grease 15 is tightly connected to the mounting shell 2 and the semiconductor refrigeration sheet 8. A second mounting frame 16 is fixedly connected to the bottom of the thermal grease 15, and two condensing plates 17 are arranged inside the second mounting frame 16.

[0027] The thermal grease 15 conducts heat from the inside of the entire mounting shell 2 and the external heat sink 1, and the conducted heat contacts the condensation plate 17 to achieve heat exchange and transfer the heat to the outside, thereby achieving the purpose of efficient heat dissipation.

[0028] See also Figure 2 and Figure 3 An isolator 5 is provided on the temperature control circuit board 4 and connected by bolts.

[0029] Before starting the laser 7, ensure that the isolator 5 is in the on state to prevent the passage of interference signals, and establish protective measures in advance to avoid signal interference problems that may be encountered in subsequent operations, thereby effectively improving the stability and reliability of the laser 7 and preventing the laser 7 from being affected by external interference signals.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser secondary temperature control device, comprising an external heat sink (1), a mounting shell (2), a temperature control circuit board (4), a first lens (6), a laser (7), a thermistor (11) and an aerogel (20), wherein the top of the external heat sink (1) is fixedly connected to the mounting shell (2), the interior of the mounting shell (2) is filled with aerogel (20), a temperature control circuit board (4) is arranged inside the aerogel (20), a first lens (6) is slidably arranged in the middle of the temperature control circuit board (4), and a laser (7) is installed on the temperature control circuit board (4), characterized in that: It also includes a semiconductor cooling sheet (8), a first installation frame (12), a heat conducting pipe (13) and a second installation seat (14); a plurality of heat conducting pipes (13) are arranged on the first installation frame (12); the second installation seat (14) is fixedly connected to both the front and rear sides of the first installation frame (12); the top of the second installation seat (14) is connected to the temperature control circuit board (4); and the bottom of the first installation frame (12) is fixedly connected to the semiconductor cooling sheet (8).

2. A laser secondary temperature control device as claimed in claim 1, characterized in that: It also includes a pigtail (3), a first mounting seat (10) and a second lens (601); the first mounting seat (10) is fixedly connected to the right side of the mounting shell (2); the pigtail (3) is connected to the right side of the first mounting seat (10); and the second lens (601) is arranged at the left end of the pigtail (3).

3. A laser secondary temperature control device as claimed in claim 1, characterized in that: It also includes thermal grease (15), a second installation frame (16) and a condensation plate (17); the thermal grease (15) is embedded in the middle of the external heat dissipation; the thermal grease (15) is tightly connected to the installation shell (2) and the semiconductor refrigeration plate (8); the bottom of the thermal grease (15) is fixedly connected to the second installation frame (16); and two condensation plates (17) are arranged inside the second installation frame (16).

4. A laser secondary temperature control device as claimed in claim 1, characterized in that: It also includes an isolator (5), which is installed on the temperature control circuit board (4).

5. A laser secondary temperature control device as claimed in claim 1, characterized in that: It also includes a resistance wire (9), and the resistance wire (9) is connected to both the left and right sides of the semiconductor cooling plate (8).

6. A laser secondary temperature control device as claimed in claim 1, characterized in that: It also includes a slide rail (18) and a slider (19); the temperature control circuit board (4) is fixedly connected to the slide rail (18); the slider (19) is slidably arranged on the slide rail (18); and the first lens (6) is placed on the slider (19).

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