激光模组

Abstract

本申请提供了一种激光模组，包括壳体、第一温度传感器、第二温度传感器以及激光器；所述壳体内开设有激光器容置腔，所述激光器设置于所述激光器容置腔内，所述壳体外的侧壁表面设置有水冷通道，所述水冷通道包括进水口和出水口；所述第一温度传感器设置于所述壳体外，且位于所述进水口和所述激光器之间，用于采集其所处位置的第一温度；所述第二温度传感器设置于所述壳体外，且位于所述出水口和所述激光器之间，用于采集其所处位置的第二温度；当所述第一温度大于第一温度阈值和 / 或所述第二温度大于第二温度阈值时，所述激光器停止工作。本申请可以实现对激光器温度的准确监控。

Claims

1. A laser module, characterized by, It includes a housing, a first temperature sensor, a second temperature sensor, and a laser; The housing has a laser housing cavity, and the laser is disposed in the laser housing cavity. The side wall surface outside the housing is provided with a water cooling channel, which includes a water inlet and a water outlet. The first temperature sensor is disposed outside the housing and located between the water inlet and the laser, and is used to collect the first temperature at its location; The second temperature sensor is disposed outside the housing and located between the water outlet and the laser, and is used to collect the second temperature at its location; The laser stops working when the first temperature is greater than the first temperature threshold and / or the second temperature is greater than the second temperature threshold.

2. The laser module of claim 1, wherein, The second temperature threshold is greater than or equal to the first temperature threshold.

3. The laser module of claim 1, wherein, The laser includes multiple laser diodes, each with an electrical interface at its end; the sidewall of the housing also has multiple through holes communicating with the accommodating cavity, at least a portion of each laser diode is disposed within the laser accommodating cavity, and the electrical interface of each laser diode extends to the outside of the laser accommodating cavity through its corresponding through hole.

4. The laser module of claim 1, wherein, The housing includes a first side and a second side. The first side is provided with a first connecting port and a water inlet, and the water inlet is connected to the first connecting port. The second side is provided with a second connecting port and a water outlet, and the water outlet is connected to the second connecting port. The first connecting port and the second connecting port are connected.

5. The laser module of claim 4, wherein, The laser module also includes a third temperature sensor and a fourth temperature sensor; The third temperature sensor is disposed outside the housing and located between the first communication port and the laser, and is used to collect the third temperature at its location; The fourth temperature sensor is disposed outside the housing and located between the second communication port and the laser, and is used to collect the fourth temperature at its location; when the third temperature is greater than the third temperature threshold and / or the fourth temperature is greater than the fourth temperature threshold, the laser stops working.

6. The laser module of claim 5, wherein, The laser module also includes: a laser control circuit; The laser control circuit is connected to the laser, the first temperature sensor, the second temperature sensor, the third temperature sensor, and the fourth temperature sensor, respectively. The laser control circuit is used to output a target control signal when any one of the first temperature, the second temperature, the third temperature, and the fourth temperature is greater than its corresponding temperature threshold, or when the target temperature obtained by weighted calculation of the first temperature, the second temperature, the third temperature, and the fourth temperature is greater than or equal to the total temperature threshold. The target control signal is used to control the laser to stop working.

7. The laser module of claim 6, wherein, The housing also has a control circuit accommodating cavity: the control circuit accommodating cavity is adjacent to the laser accommodating cavity; The laser control circuit is disposed within the control circuit accommodating cavity.

8. The laser module of claim 6, wherein, The laser module includes a driving circuit and a processor. The driving circuit is connected to the processor and the laser respectively, and is used to receive control signals from the processor and, according to the control signals, connect or disconnect the connection line between the laser and the laser power supply.

9. The laser module of claim 8, wherein, The driving circuit includes: a first transistor and a second transistor; The control terminal of the first transistor is used to receive the control signal from the processor. The first terminal of the first transistor is grounded, and the second terminal of the first transistor is connected to the control terminal of the second transistor. The first terminal of the second transistor is connected to the power supply of the laser, and the second terminal of the second transistor is connected to the laser.

10. The laser module of claim 8, wherein, The driving circuit includes: a signal modulation chip, a laser driving chip, a sampling resistor, and a third transistor; The sampling resistor is connected in the circuit formed by the laser and the laser power supply; The third transistor is connected to the circuit and is used to control the laser to turn on or off; The signal modulation chip is connected to the processor and is used to modulate the control signal output by the processor into a voltage signal. The laser driver chip is connected to the signal modulation chip, the sampling resistor, and the third transistor respectively. It is used to receive the sampling voltage of the sampling resistor and the voltage signal, and output a drive signal to the third transistor. The drive signal represents the comparison result of the sampling voltage and the voltage signal, and the drive signal is used to indicate whether the third transistor is turned on or off, so as to control the laser to be turned on or off.

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