Semiconductor laser treatment equipment and laser power adjustment method thereof

Abstract

The invention discloses a semiconductor laser treatment equipment and a laser power adjustment method thereof. The circuit board of the semiconductor laser treatment equipment integrates an MCU, a laser module and a laser power adjustment circuit; The laser module supplies power, detects the current working current flowing through the laser module and outputs the corresponding sampling voltage to the MCU; the MCU calculates the current working current flowing through the laser module according to the sampling voltage, and according to the set laser power in the pre-stored current power relationship Query the required operating current in the array list; adjust the duty cycle of the driving signal to make the current operating current reach the required operating current. Using MCU combined with the current power relationship array list to realize the software automatic laser power adjustment, the adjustment degree is more flexible and precise; it can directly adjust to the set laser power, avoiding the blind adjustment of the existing adjustable potentiometer, and improving the laser power adjustment accuracy.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a semiconductor laser treatment device and a laser power adjustment method thereof. Background technique [0002] The drive circuit of the existing laser module often uses the combination of an adjustable potentiometer, a single operational amplifier circuit and the PD pin of the laser module to realize the adjustment of the laser power of the laser module. Since the laser power is adjusted mainly through the adjustable potentiometer, and the adjustable potentiometer is a vulnerable part in the electronic device, it is easily damaged after long-term use, and it is inconvenient for the user to replace the adjustable potentiometer (soldering iron is required); and It is necessary to manually adjust the rotating shaft or sliding handle, which can only be adjusted blindly, and cannot be adjusted to the set laser power value; if the soldering pins are in poor contact or loose duri...

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Problems solved by technology

[0004] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide a semiconductor laser treatment device and its laser power adjustment method, aiming to solve the problem of adjusting the laser power of the laser module through an adjustable potentiometer in the prior art, which can only be blinded. The problem of inaccurate adjustment and laser power adjustment

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