Radiation driving circuit, radiation driving method and radiation emitting device

Abstract

The invention provides a radiation driving circuit, a radiation driving method and a radiation emission device. The radiation driving circuit comprises a radiation generation module and at least two power supply modules, and the input end of the radiation generation module is connected with the output ends of the at least two power supply modules. The at least two power supply modules comprise aninitial power supply module used for providing a first voltage V1 as an initial voltage for the radiation generation module; a final-state power supply module, used for providing a second voltage V2 for the radiation generation module, so that the current of the radiation generation module is a preset threshold value. The at least two power supply modules are switched to the next power supply module according to the sequence of the output voltages from high to low when a preset condition is met until the power supply modules are switched to the final-state power supply module. According to theinvention, the rising edge time of the radiation generation module is shortened, and the energy consumption is reduced.

Description

technical field [0001] The invention belongs to the field of radiation driving, and in particular relates to a radiation driving circuit, a radiation driving method and a radiation emitting device. Background technique [0002] Semiconductor lasers have the advantages of small size, high reliability, high efficiency, light weight and low price, which make them widely used in the field of optoelectronics. In recent years, the application of semiconductor lasers as emitting light sources in the fields of laser ranging, laser detection and target recognition has developed rapidly. [0003] In the actual application process, higher and higher requirements are put forward for the rising edge time of the laser pulse. In order to obtain a good application effect, the pulse width of the laser pulse is usually narrow and the rising edge is fast. Especially in the laser radar ranging system, it is necessary to determine the distance through the time difference between the emission of...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the deficiencies in the prior art, the embodiment of the present invention provides a radiation driving circuit, a radiation driving method and a radiation emitting device to solve the technical problem that the prior art cannot obtain a pulse signal with a fast rising speed and low power consumption

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