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Parallel dense multichannel acousto-optical modulating device

An acousto-optic modulation and multi-channel technology, applied in optics, nonlinear optics, instruments, etc., can solve problems such as difficulty in meeting optical power requirements, poor consistency, and large output beam scattering angle, and achieve easy collimation and focusing, and beam The effect of good consistency and high power output

Inactive Publication Date: 2009-10-14
杭州数腾科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Acousto-optic time-division modulation makes it difficult to meet the optical power requirements due to the limitation of the shutter
Optical fiber synthesis technology also has the problem of large output beam scattering angle and poor consistency
And the scanning modulation can not exceed 64 channels

Method used

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Embodiment Construction

[0016] Such as figure 1 As shown, the high-power dense multi-channel acousto-optic modulation device for laser medium imaging is provided with a laser bar 1, a fast-axis collimating cylindrical mirror 2, a slow-axis collimating cylindrical mirror 3, Focusing lens 4, field mirror 5, acousto-optic modulation crystal 6, shading plate 9, imaging lens group 10, imaging medium 11, the upper side of the acousto-optic modulation crystal 6 is provided with an intercalated ultrasonic transducer 7 in the same crystal optical axis direction, The lower side of the acousto-optic modulation crystal 6 is provided with an ultrasonic absorbing end 8 in the same direction as the crystal optical axis.

[0017] Shading plate 9 is the light shielding plate of the center light-transmitting, and the light-shielding plate of both sides opaque (see figure 2 ). Visors with an opaque center and transparent sides (see image 3 ). The crystal optical axis of the acousto-optic modulation crystal 6 can ...

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Abstract

The invention discloses a parallel dense multichannel acousto-optical modulating device. The device adopts the structure that a laser bar, a fast axis alignment cylindrical mirror, a slow axis alignment cylindrical mirror, a focusing lens, a filed lens, an acousto-optical modulating crystal, an occluder, an imaging lens assembly and an imaging medium are arranged on an optic axis of an identical device in sequence; misplug-type ultrasonic transducers are arranged on the upper side of the acousto-optical modulating crystal along the direction of the optical axis of a same crystal; and an ultrasonic absorption end is arranged at the lower side of the acousto-optical modulating crystal along the direction of the optical axis of a same crystal. The optical axis of the acousto-optical modulating crystal and the optical path of the optical axis of the device can be superposed or form an angle of 10 to 15 degrees. The occluder can be an occluder with a non-light tight center, or with two light tight sides, or with a light tight center and two non-light tight sides. The device ensures that the output laser has high power, is dense, and has multi channels; the consistency of the beam is good, the optical paths are parallel and easy for further collimation and focusing, and the modulating array can be better applied to CTP, laser photo-typesetting and laser drawing systems.

Description

technical field [0001] The invention relates to the technical field of laser medium imaging, in particular to a parallel dense multi-channel acousto-optic modulation device. Background technique [0002] Traditional laser media imaging technology uses highly sensitive reading media, such as silver salt film, etc., and the laser energy density is on the order of several uJ / cm -2 , mainly used in laser phototypesetting, light painting, printing and other fields. The structure of the imaging device has several structures such as capstan type, inner drum type and outer drum type. The capstan type structure is the simplest, and its main scanning adopts rotating mirror scanning (also useful vibrating mirror), and the film is driven by several driving rollers. The outer drum structure is to vacuum-adsorb the film on the rotating outer cylinder, and then the trolley equipped with the laser scanning device moves slowly to scan the pictures and texts on the film like engraving thread...

Claims

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Application Information

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IPC IPC(8): G02F1/11
Inventor 唐晖李九生李向军
Owner 杭州数腾科技有限公司
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