The Laser Steady Light And Research That Modulates With A Modulating Device

The laser scanning is the laser technology in a great deal of a very active field while employing. The systematic essence of the laser scanning is an optical scanner system. It is basically from laser instrument, modulating device, deflection device, optical system, regulating and feed backing device and detector etc. to make up partly.Among various laser scanning system, great majority scan system demand, scan laser to be light source steady in intensity, especially even more like this in high precision, system of scanning of high offering an explanation rate. But influenced by a great deal of factors in laser and only strong stability scanning as one again, for instance, the un-stability of laser instrument, inconsistency of decaying to the laser of every part, etc. in the scanner, can lead to the fact intensity of laser on piece fluctuate, cause, scan systematic formation of image quality drop finally. So, steady mere links are indispensable in scanning the system.Because the non-linearity of scanning that the existence in the laser scanning system is certain, result in scanning picture distortion, and the distortion of gray level of the picture is one of them. Produce picture gray level basic reason of distortion to scan each exposure with exposure that set for of picture element to look like piece wait and cause.In order to realize stability and modulation of the light beam of laser, in the stability in the past laser light beam and modulation system, adopt two sound person who modulate come, realize only, one use steady laser only better generally, another one is used for carrying on the picture signal to modulate.1 bugle call person who modulate function of (AOM) to form a laser power shoulder the response system only, make person who modulate first class mere light that diffraction get can be guaranteed steadily while being better only sound. Only the function of the modulating device (AOM) is to modulate the laser light beam after being stable in 2 bugle calls, finally, the laser light beam which we get, the ones that have already been modulated...