CN215579540U

CN215579540U - Array type laser light source driving circuit

Info

Publication number: CN215579540U
Application number: CN202122334902.7U
Authority: CN
Inventors: 赵永久; 马卫华; 杨清波; 崔付朝
Original assignee: Nanyang Nanfang Intelligent Photoelectric Co ltd
Current assignee: Nanyang Nanfang Intelligent Photoelectric Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-01-18
Anticipated expiration: 2031-09-26

Abstract

The utility model provides an array laser light source drive circuit, includes PWM signal output module, laser light source driver and 88 array laser light sources, 88 array laser light source's first row and tenth are first group laser light source, and its second row and ninth are second group laser light source, and its third, fourth, fifth are third group laser light source, and its sixth, seventh, eight are fourth group laser light source, PWM signal output of PWM signal output module with the PWM input pin electricity of laser light source driver is connected, 4 laser light source drivers are used for driving first group laser light source, second group laser light source, third group laser light source, fourth group laser light source respectively. By driving the 88 array laser light sources in groups, the response time of the laser light sources can be shortened. The PWM signal is used for controlling the light source driver to enable the laser light source to flash, and the heat dissipation of the laser light source can be reduced.

Description

Array type laser light source driving circuit

Technical Field

The utility model relates to the technical field of array type laser light source driving, in particular to an array type laser light source driving circuit.

Background

With the advent of different models of 3D printers, a laser light source 3D printer with higher power, namely P printer, is required in the market_{Optical power}Greater than 20mW/cm²Therefore, a 405nm band laser light source driving circuit needs to be designed.

Patent document CN 110718184a describes a driving circuit of an array LED display panel, which includes N row lines, M column lines, and a plurality of LEDs connected between the row lines and the column lines, where N and M are natural numbers greater than 1, and is characterized in that the driving circuit includes: the control logic module outputs a reference current control signal through a first output end of the control logic module, outputs a constant current control signal through a second output end of the control logic module and outputs a driving control signal through a third output end of the control logic module based on the data received by the input end of the control logic module; a reference current source, a control end of which is connected with the first output end of the control logic module, and which generates a reference current based on the reference current control signal; the constant current output module comprises a control end, N constant current ports and N constant current sources, the control end of the constant current output module is connected with the second output of the control logic module, the N constant current sources are correspondingly connected with N row lines through the N constant current ports respectively, each constant current source generates a constant current based on the reference current generated by the reference current source, and the constant current output module controls one or more corresponding constant current sources to generate one or more paths of constant currents through one or more corresponding constant current ports based on the constant current control signals; and the drive output module comprises a control end, M drive ports and M drive switches, the control end of the drive output module is connected with the third output end of the control logic module, the M drive switches are respectively correspondingly connected with the M row lines through the M drive ports, and at the same time, the drive output module controls at most one drive switch to be switched on based on the drive control signal. The technical scheme is not suitable for driving the laser light source array, because the laser light source belongs to a high-energy light source, and the combustible can be ignited within a few seconds after being continuously lightened.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an array type laser light source driving circuit to adapt to the driving characteristics of an array type laser light source.

The technical scheme of the utility model is as follows:

the utility model provides an array laser light source drive circuit, includes PWM signal output module, laser light source driver and 88 array laser light sources, 88 array laser light source's first row and tenth are first group laser light source, and its second row and ninth are second group laser light source, and its third, fourth, fifth are third group laser light source, and its sixth, seventh, eight are fourth group laser light source, PWM signal output of PWM signal output module with the PWM input pin electricity of laser light source driver is connected, 4 laser light source drivers are used for driving first group laser light source, second group laser light source, third group laser light source, fourth group laser light source respectively.

Preferably, the 88-array laser light source has 6 laser light sources connected in series in the first column, 8 laser light sources connected in series in the second column, 10 laser light sources connected in series in the third column, 10 laser light sources connected in series in the fourth column, 10 laser light sources connected in series in the fifth column, 10 laser light sources connected in series in the sixth column, 10 laser light sources connected in series in the seventh column, 10 laser light sources connected in series in the eighth column, 8 laser light sources connected in series in the ninth column, and 6 laser light sources connected in series in the tenth column.

Preferably, the laser light source driver is an LT3755 type laser light source driver.

Preferably, the PWM signal output module is a pin 42 of an STM8S105 type single chip microcomputer.

The utility model has the beneficial effects that:

1. by driving the 88 array laser light sources in groups, the response time of the laser light sources can be shortened. The PWM signal is used for controlling the light source driver to enable the laser light source to flash, and the heat dissipation of the laser light source can be reduced.

The LT3755 type laser light source driver can reduce the manufacturing difficulty of the array type laser light source driving circuit.

Drawings

Fig. 1 is a peripheral circuit diagram of a laser light source driver of an array laser light source driving circuit.

Fig. 2 is a distribution diagram of an 88 array laser source.

Detailed Description

The present invention is described below in terms of embodiments in conjunction with the accompanying drawings to assist those skilled in the art in understanding and implementing the present invention. Unless otherwise indicated, the following embodiments and technical terms therein should not be understood to depart from the background of the technical knowledge in the technical field.

An array laser light source driving circuit is disclosed, referring to fig. 1-2, and comprises a PWM signal output module, a laser light source driver and 88 array laser light sources, wherein a first row and a tenth row of the 88 array laser light sources are first group laser light sources, a second row and a ninth row thereof are second group laser light sources, a third row, a fourth row and a fifth row thereof are third group laser light sources, a sixth row, a seventh row and an eighth row thereof are fourth group laser light sources, a PWM signal output end of the PWM signal output module is electrically connected with a PWM input pin of the laser light source driver, and the number of the laser light source driver is 4, and the laser light source driver is respectively used for driving the first group laser light sources, the second group laser light sources, the third group laser light sources and the fourth group laser light sources.

In the 88 array type laser light source, in the first group of laser light sources, the first row of laser light sources and the tenth row of laser light sources are connected in parallel, in the second group of laser light sources, the second row of laser light sources and the ninth row of laser light sources are connected in parallel, in the third group of laser light sources, the third row of laser light sources, the fourth row of laser light sources and the fifth row of laser light sources are connected in parallel, and in the fourth group of laser light sources, the sixth row of laser light sources, the seventh row of laser light sources and the eighth row of laser light sources are connected in parallel.

The utility model is described in detail above with reference to the figures and examples. It should be understood that in practice the description of all possible embodiments is not exhaustive and that the inventive concepts are described herein as far as possible by way of illustration. Without departing from the inventive concept of the present invention and without any creative work, a person skilled in the art should, in all of the embodiments, make optional combinations of technical features and experimental changes of specific parameters, or make a routine replacement of the disclosed technical means by using the prior art in the technical field to form specific embodiments, which belong to the content implicitly disclosed by the present invention.

Claims

1. The utility model provides an array laser light source drive circuit, its characterized in that, includes PWM signal output module, laser light source driver and 88 array laser light sources, 88 array laser light source's first row and tenth are first group laser light source, and its second row and ninth are second group laser light source, and its third, fourth, fifth are third group laser light source, and its sixth, seventh, eight are fourth group laser light source, the PWM signal output part of PWM signal output module with the PWM input pin electricity of laser light source driver is connected, 4 laser light source drivers are used for driving first group laser light source, second group laser light source, third group laser light source, fourth group laser light source respectively.

2. The array laser light source driving circuit of claim 1, wherein the 88 array laser light sources have 6 laser light sources connected in series in a first column, 8 laser light sources connected in series in a second column, 10 laser light sources connected in series in a third column, 10 laser light sources connected in series in a fourth column, 10 laser light sources connected in series in a fifth column, 10 laser light sources connected in series in a sixth column, 10 laser light sources connected in series in a seventh column, 10 laser light sources connected in series in an eighth column, 8 laser light sources connected in series in a ninth column, and 6 laser light sources connected in series in a tenth column.

3. The array type laser light source driving circuit of claim 1, wherein the laser light source driver is an LT3755 type laser light source driver.

4. The array laser light source driving circuit of claim 1, wherein the PWM signal output module is a pin 42 of an STM8S105 type single chip microcomputer.