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Laser control circuit and laser device

A technology for controlling circuits and lasers, applied to lasers, laser components, semiconductor lasers, etc., can solve problems such as single function, poor versatility, and complex structure, and achieve the effects of preventing damage, reasonable design, and easy promotion and application

Pending Publication Date: 2019-06-28
SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI +1
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In many practical applications, lasers have a wide range of uses in the fields of medicine, industrial production, and national defense and military affairs; among them, lasers need to be driven by a dedicated power supply. At present, the existing laser drive power supply has complex structure, single function, and poor versatility

Method used

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  • Laser control circuit and laser device
  • Laser control circuit and laser device
  • Laser control circuit and laser device

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Embodiment Construction

[0027] Below, the present invention will be further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of not conflicting, the various embodiments described below or the technical features can be combined arbitrarily to form new embodiments. .

[0028] A laser control circuit, such as figure 1 As shown, it includes a current limiting circuit, a laser driving circuit, and a voltage conversion circuit; the current limiting circuit and the laser driving circuit are connected to each other; the laser driving circuit and the voltage conversion circuit are respectively connected to the laser; wherein,

[0029] The current limiting circuit is used to limit the maximum value of the laser operating current; in a preferred embodiment, the current limiting circuit adopts a unidirectional transient voltage suppressor diode (unidirectional TVS tube); in one embodiment, the current limiting circuit includes...

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Abstract

The invention provides a laser control circuit comprising a current limiting circuit, a laser driving circuit and a voltage conversion circuit. The current limiting circuit is connected to the laser driving circuit, and the laser driving circuit and the voltage converting circuit are connected to a laser. The laser driving circuit is used for driving the laser. The voltage converting circuit is used for converting the voltage of an external power supply into a power supply voltage required by the laser. The invention also relates to a laser device. According to the invention, by limiting the maximum value of current, the laser is protected, and the damage to the laser is due to excessive current is prevented. The current series negative feedback is used to ensure the stable output of the laser. By changing the resistance ratio in the voltage converting circuit, power is supplied to the laser of different junction voltages. The laser control circuit has a power monitoring function, at the same time, the design is reasonable, the circuit structure is light, and the popularization and application of the laser control circuit in the laser field are facilitated.

Description

technical field [0001] The invention relates to a laser control circuit, in particular to a laser control circuit with adjustable voltage and current and a laser device. Background technique [0002] In many practical applications, lasers are widely used in the fields of medicine, industrial production, and national defense and military affairs; among them, lasers need to be driven by a dedicated power supply. At present, the existing laser drive power supply has complex structure, single function, and poor versatility. [0003] In order to facilitate efficient coordinated control and realize the requirements of driving lasers with different junction voltages, a new type of laser control circuit is urgently needed. Contents of the invention [0004] In order to overcome the deficiencies of the prior art, the present invention provides a laser control circuit with simple design, adjustable voltage and current, high power supply stability and power monitoring function, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/042H01S3/09
Inventor 高静陈建生姚文明田玉冰王鹏檀慧明
Owner SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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