CN209805093U - Temperature control system of laser light source - Google Patents
Temperature control system of laser light source Download PDFInfo
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- CN209805093U CN209805093U CN201920968367.0U CN201920968367U CN209805093U CN 209805093 U CN209805093 U CN 209805093U CN 201920968367 U CN201920968367 U CN 201920968367U CN 209805093 U CN209805093 U CN 209805093U
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Abstract
A temperature control system for a laser light source, comprising: insulating boot, sealed cowling, heat sink device, first temperature sensor, second temperature sensor, laser drive circuit and temperature regulating circuit, be equipped with first TEC refrigerator on the heat sink device in the sealed cowling, be equipped with the second TEC refrigerator on the heat sink device outside the insulating boot, be equipped with laser light source module on the first TEC refrigerator, first temperature sensor sets up on the laser light source module, second temperature sensor sets up in heat sink device, first TEC refrigerator first temperature sensor and temperature regulating circuit form the interior control closed loop, the second TEC refrigerator second temperature sensor with temperature regulating circuit forms the outer control closed loop. Its advantage lies in, not only can realize the accurate control to the temperature condition, can also make still can realize the accurate control to system temperature under the uncontrollable condition of ambient temperature condition.
Description
Technical Field
The utility model belongs to the technical field of laser equipment, concretely relates to temperature control system of laser light source.
Background
Modern medicine usually uses photodynamic therapy to destroy tumor tissue, the principle is that photosensitizer can be retained in tumor tissue after entering organism for a certain time, at this time, the tumor part can be irradiated by specific laser to induce strong photochemical reaction, and the tumor tissue can be destroyed to achieve the therapeutic purpose, but the photodynamic therapy has specific requirements for the wavelength of the exciting laser, and the wavelength of the laser not only needs stable driving power supply, but also needs strict temperature condition.
In the prior art, the TEC refrigerator is mainly arranged to control the temperature of the laser semiconductor so as to obtain the wavelength of the laser to be excited, but in practical application, the temperature condition is affected by time, environment and other factors, and the wavelength of the excitation light is difficult to rapidly and accurately control, so that the photochemical reaction efficiency is reduced and the optical power is unstable, thereby affecting the treatment effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough and defect of prior art, provide a temperature control system that laser source temperature condition can be timely, accurate control.
The purpose of the utility model is realized through the following technical scheme:
A temperature control system for a laser light source, comprising: insulating boot, sealed cowling, heat sink device, first temperature sensor, second temperature sensor, laser drive circuit and temperature regulating circuit, laser drive circuit includes the laser drive constant current source, temperature regulating circuit includes sampling circuit, the sealed cowling sets up in the insulating boot, the insulating boot reaches the sealed cowling all seals up to be fixed on the heat sink device, the laser drive constant current source with sampling circuit all is located the insulating boot with on the heat sink device between the sealed cowling, be equipped with first TEC refrigerator on the heat sink device in the sealed cowling, be equipped with the second TEC refrigerator on the heat sink device outside the insulating boot, be equipped with laser source module on the first TEC refrigerator, first temperature sensor sets up on the laser source module, the second temperature sensor sets up in the heat sink device, first TEC refrigerator, The first temperature sensor and the temperature adjusting circuit form an inner control closed loop, and the second TEC refrigerator, the second temperature sensor and the temperature adjusting circuit form an outer control closed loop.
Specifically, the laser light source module comprises a laser semiconductor and a laser semiconductor base, the laser semiconductor base is arranged on the first TEC refrigerator, the laser semiconductor is arranged on the laser semiconductor base, and the first temperature sensor is arranged in the laser semiconductor base.
Specifically, the first temperature sensor and the second temperature sensor are in signal connection with the sampling circuit.
Specifically, one surface of the first TEC refrigerator is attached to the laser semiconductor base, the other surface of the first TEC refrigerator is attached to the heat sink, and one surface of the second TEC refrigerator is attached to the heat sink.
Specifically, the laser driving constant current source is electrically connected to the laser semiconductor.
Specifically, the bottom of the second TEC refrigerator is further provided with a radiator, and the other side of the second TEC refrigerator is attached to the radiator.
Compared with the prior art, the utility model following advantage and beneficial effect are included:
The insulating cover and the sealing cover are arranged to provide a relatively stable temperature environment for the work of each device, so that the first TEC refrigerator, the first temperature sensor and the temperature adjusting circuit form a control closed loop, and the effect of keeping constant temperature in the sealing cover is achieved; the second TEC refrigerator, the second temperature sensor and the temperature adjusting circuit form another control closed loop to realize constant temperature control on the heat sink device and temperature control in the insulating cover, and the bottom of the heat sink device is provided with a radiator to lead out heat generated by the system. The two-stage temperature control scheme of adoption not only can realize the accurate control to temperature control system temperature condition, can also make and still can realize the accurate control to temperature control system temperature under the uncontrollable condition of ambient temperature condition.
Drawings
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a connection diagram of some modules according to the present invention.
1-a laser semiconductor; 2-a laser semiconductor pedestal; 3-TEC refrigerator; 301-a first TEC refrigerator; 302-a second TEC refrigerator; 4-heat sink means; 501-a first temperature sensor; 502-a second temperature sensor; 6-a radiator; 7-laser driving circuit, 701-laser driving constant current source; 8-sealing cover; 9-temperature regulating circuit, 901-sampling circuit; 10-insulating cover.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
As shown in fig. 1 and 2, a temperature control system of a laser light source includes: the laser driving device comprises an insulating cover 10, a sealing cover 8, a heat sink device 4, a first temperature sensor 501, a second temperature sensor 502, a laser driving circuit 7 and a temperature adjusting circuit 9, wherein the laser driving circuit 7 comprises a laser driving constant current source 701, the temperature adjusting circuit 9 comprises a sampling circuit 901, the sealing cover 8 is arranged in the insulating cover 10, the insulating cover 10 and the sealing cover 8 are hermetically fixed on the heat sink device 4, the insulating cover 10 and the heat sink device 4 are combined to form a temperature insulating area, the sealing cover 8 further isolates the temperature insulating area, a laser light source sealing area is formed in the sealing cover 8, the inside of the insulating cover 10 can be vacuumized to enhance the heat insulation effect of the temperature control temperature insulating area, the heat sink device 4 can enhance the dissipation of heat generated by the laser semiconductor 1 and further improve the control of the temperature of the laser semiconductor 1, and the laser driving constant current source 701 and the sampling circuit 901 are both located in the insulating cover 10 and the sealing cover 8 On the heat sink device 4, the laser driving constant current source 701 and the sampling circuit 901 are both arranged in the temperature insulation region, so that the control precision is prevented from being influenced by temperature drift, the control accuracy is ensured, and the stability of the wavelength and the output power of the laser light source is further ensured. A first TEC refrigerator 301 is arranged on the heat sink device 4 in the sealing cover 8 to conduct heat of the first TEC refrigerator 301 to the heat sink device 4, a second TEC refrigerator 302 is arranged on the heat sink device 4 outside the insulating cover 10 to conduct heat of the heat sink device 4 to the second TEC refrigerator 302, a laser light source module is arranged on the first TEC refrigerator 301, the first TEC refrigerator 301 absorbs heat of the laser semiconductor 1 to conduct heat of the laser semiconductor 1, the first temperature sensor 501 is arranged on the laser light source module, the second temperature sensor 502 is arranged in the heat sink device 4, the first temperature sensor 501 timely feeds back the temperature of the laser semiconductor base 2 to the temperature adjusting circuit 9, a second temperature sensor 502 is further arranged in the heat sink device 4, and the second temperature sensor 502 timely feeds back the temperature of the heat sink device 4 to the temperature adjusting circuit 9, the first TEC refrigerator 301, the first temperature sensor 501 and the temperature adjusting circuit 9 form an inner control closed loop, the second TEC refrigerator 302, the second temperature sensor 502 and the temperature adjusting circuit 9 form an outer control closed loop, and the heat radiator 6 finally guides out heat generated by the temperature control system, so that second-order temperature control of the temperature control system is realized, and the temperature control of the temperature control system is enhanced by combining a double-order temperature control scheme.
Further, the laser light source module includes a laser semiconductor 1 and a laser semiconductor base 2, the laser semiconductor base 2 is disposed on the first TEC refrigerator 301, the laser semiconductor 1 is disposed on the laser semiconductor base 2, and the first temperature sensor 501 is disposed in the laser semiconductor base 2.
Further, the first temperature sensor 501 and the second temperature sensor 502 are both in signal connection with the sampling circuit 901. The temperature measured at the heat sink device 4 and the laser semiconductor base 2 can be transmitted to the temperature adjusting circuit 9 in time.
Further, one surface of the first TEC refrigerator 301 is attached to the laser semiconductor base 2, the other surface of the first TEC refrigerator 301 is attached to the heat sink device 4, and one surface of the second TEC refrigerator 302 is attached to the heat sink device 4. The heat transfer of the first TEC refrigerator 301 to the heat sink device 4 is realized; one surface of the second TEC refrigerator 302 is attached to the heat sink device 4, so that heat of the heat sink device 4 is transferred to the second TEC refrigerator 302.
Further, the laser driving constant current source 701 is electrically connected to the laser semiconductor 1.
Further, the bottom of the second TEC refrigerator 302 is further provided with a heat sink 6, and the other side of the second TEC refrigerator 302 is attached to the heat sink 6. The heat sink 6 can timely take away the heat of the second TEC refrigerator 302, so as to ensure that the heat of the whole system is led out and is in a balanced state.
The utility model discloses a concrete implementation process as follows:
When the laser source module works, the temperature of the laser source module is too high, the first temperature sensor 501 timely and accurately feeds back a temperature signal of the laser semiconductor base 2 to the temperature regulating circuit 9, the temperature regulating circuit 9 controls the first TEC refrigerator 301 and the second TEC refrigerator 302 to conduct heat, one surface of the first TEC refrigerator 301, which is tightly attached to the laser semiconductor base 2, absorbs heat generated by the laser semiconductor 1 and conducts the heat to the heat sink device 4 through the other surface of the first TEC refrigerator 301, the temperature of the heat sink device 4 rises, heat in the temperature insulation region and the laser source sealing region is also quickly conducted to the heat sink device 4, one surface of the second TEC refrigerator 302, which is tightly attached to the heat sink device 4, absorbs heat on the heat sink device 4, heat of the second TEC refrigerator 302 conducts to the other surface, and heat of the other surface of the second TEC refrigerator 302 conducts to the external environment in an air cooling or water cooling mode through the radiator 6 arranged at, the temperature of the heat sink device 4 is reduced, and then the heat sink device 4 absorbs the heat in the temperature insulation area with relatively high temperature and the laser light source sealing area, so that the temperature of the temperature insulation area and the laser light source sealing area is reduced, when the temperature of the laser semiconductor base 2 fed back to the temperature adjusting circuit 9 by the first temperature sensor 501 is a normal value, the first TEC refrigerator 301 stops working, when the temperature of the heat sink device 4 fed back to the temperature adjusting circuit 9 by the second temperature sensor 502 is a normal value, the second TEC refrigerator 302 stops conducting heat, the radiator 6 finally stops radiating, and the thermostatic adjustment of the temperature control system is completed.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the scope of the present invention should be determined by the appended claims.
Claims (6)
1. a temperature control system for a laser light source, comprising: the device comprises an insulating cover (10), a sealing cover (8), a heat sink device (4), a first temperature sensor (501), a second temperature sensor (502), a laser driving circuit (7) and a temperature regulating circuit (9), wherein the laser driving circuit (7) comprises a laser driving constant current source (701), the temperature regulating circuit (9) comprises a sampling circuit (901), the sealing cover (8) is arranged in the insulating cover (10), the insulating cover (10) and the sealing cover (8) are hermetically fixed on the heat sink device (4), the laser driving constant current source (701) and the sampling circuit (901) are both positioned on the heat sink device (4) between the insulating cover (10) and the sealing cover (8), a first cooler (301) is arranged on the heat sink device (4) in the sealing cover (8), and a second cooler (302) is arranged on the heat sink device (4) outside the insulating cover (10), the laser light source module is arranged on the first TEC refrigerator (301), the first temperature sensor (501) is arranged on the laser light source module, the second temperature sensor (502) is arranged in the heat sink device (4), the first TEC refrigerator (301), the first temperature sensor (501) and the temperature adjusting circuit (9) form an inner control closed loop, and the second TEC refrigerator (302), the second temperature sensor (502) and the temperature adjusting circuit (9) form an outer control closed loop.
2. The temperature control system of the laser light source according to claim 1, wherein the laser light source module comprises a laser semiconductor (1) and a laser semiconductor base (2), the laser semiconductor base (2) is arranged on the first TEC refrigerator 301, the laser semiconductor (1) is arranged on the laser semiconductor base (2), and the first temperature sensor (501) is arranged in the laser semiconductor base (2).
3. The temperature control system of claim 1, wherein the first temperature sensor (501) and the second temperature sensor (502) are both in signal connection with the sampling circuit (901).
4. the temperature control system of a laser light source according to claim 1, wherein one side of the first TEC refrigerator 301 is attached to the laser semiconductor base (2), the other side of the first TEC refrigerator (301) is attached to the heat sink device (4), and one side of the second TEC refrigerator (302) is attached to the heat sink device (4).
5. The temperature control system of claim 2, wherein the laser driving constant current source (701) is electrically connected to the laser semiconductor (1).
6. The temperature control system of a laser light source according to claim 1, wherein a heat sink (6) is further disposed at the bottom of the second TEC refrigerator (302), and the other surface of the second TEC refrigerator (302) is attached to the heat sink (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920968367.0U CN209805093U (en) | 2019-06-26 | 2019-06-26 | Temperature control system of laser light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920968367.0U CN209805093U (en) | 2019-06-26 | 2019-06-26 | Temperature control system of laser light source |
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| Publication Number | Publication Date |
|---|---|
| CN209805093U true CN209805093U (en) | 2019-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201920968367.0U Active CN209805093U (en) | 2019-06-26 | 2019-06-26 | Temperature control system of laser light source |
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| CN (1) | CN209805093U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113219600A (en) * | 2021-04-20 | 2021-08-06 | 武汉光迅科技股份有限公司 | Optical transmitter sub-module |
-
2019
- 2019-06-26 CN CN201920968367.0U patent/CN209805093U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113219600A (en) * | 2021-04-20 | 2021-08-06 | 武汉光迅科技股份有限公司 | Optical transmitter sub-module |
| CN113219600B (en) * | 2021-04-20 | 2022-07-15 | 武汉光迅科技股份有限公司 | Transmitter optical subassembly |
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