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Laser acousto-optical scanning method and device thereof

An acousto-optic scanning and laser technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of shortening the service life of machinery, large mechanical impact force, etc., and achieve the effect of wide application and fast speed.

Inactive Publication Date: 2016-03-30
武汉嘉铭激光股份有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

If the mechanical beam deflection transmission can change the direction quickly, the only way is to increase the acceleration; it is limited and the machine must bear a huge impact force, which will greatly shorten the service life of the machine

Method used

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  • Laser acousto-optical scanning method and device thereof
  • Laser acousto-optical scanning method and device thereof
  • Laser acousto-optical scanning method and device thereof

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] Acousto-optic modulation technology has been widely used in continuous lasers to increase the instantaneous power of small and medium-sized continuous lasers. This technology is called acousto-optic Q-switching; acousto-optic deflection uses acousto-optic interaction to control the propagation direction of the laser beam; both The principle is the acousto-optic diffraction effect.

[0024] This embodiment provides a laser acousto-optic scanning method, such as figure 2 shown, including the following steps.

[0025] Step 1, choose M 2 Pulse lasers 2 is the beam quality factor.

[0026] In step two, the laser beam is deflected in two stages through the acousto-optic deflector.

[0027] Step 3: In the range of ±2.5o on both sides of the laser beam on the X-axis of the M plane perpendicular to the irradiation direction of the laser beam, the fir...

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Abstract

The invention relates to the field of laser scanning and detecting application, in particular to a laser acousto-optical scanning method and a device thereof. According to the method, a mechanical laser deflection mode for traditional laser scanning is abandoned, the audio-optical deflection technology is adopted for enabling laser beams to precisely locate and scan (200-1000)*(200-1000) points within the 5o*5oX-Y plane range, then reflecting signals of all the points are received, and the physical quantity detecting results such as the needed distance and the dynamic graphics change are obtained through processing of a software system. The detecting speed is high, application is wide, and any mechanical motion is avoided in the detecting process.

Description

technical field [0001] The invention relates to the application field of laser scanning and detection, in particular to a laser acousto-optic scanning method and a device thereof. Background technique [0002] Laser scanning is very common as light transmission in laser applications: as figure 1 As shown, the laser marking uses the movement of the vibrating mirror to transmit the laser to the workpiece to be marked (the same as most laser processing); the laser communication transmits or receives the signal through the rotating mirror; the traditional laser scanning is through What the moving reflector carries out, in other words all realizes by mechanical movement. [0003] Since the machine itself has weight, there is an inertia problem in the mechanical movement. When the mechanical movement changes direction, a deceleration-stop-acceleration-deceleration-stop process is required. If the mechanical beam deflection transmission can change the direction quickly, the only...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/31
CPCG02F1/31
Inventor 周少华陈桥立
Owner 武汉嘉铭激光股份有限公司
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