Optical system and imaging method for computer flat screen plate making

Abstract

The invention provides a computer flat screen plate-making optical system and imaging method, which adopts a coaxial perspective optical structure, and is arranged in sequence along the optical axis with densely packed optical fibers, a front group lens group, a rear group lens group, and a working surface, wherein the front group lens group The lens group is composed of two lenses, and the rear lens group is composed of five lenses; in actual work, the distance between the densely packed optical fiber and the front lens group is fixed, forming a whole, relative to the rear lens group along the optical axis direction Independent movement, by changing the distance between the front lens group and the rear lens group, and the distance between the rear lens group and the working surface, it can realize the continuously variable plate-making accuracy of 300dpi-1200dpi resolution on the working surface. This system is more traditional and single. The advanced optical imaging system can achieve continuously adjustable resolution, and has the advantages of small imaging distortion and high energy uniformity of the image plane.

Description

technical field [0001] The invention relates to the technical field of computer direct plate making, in particular to an optical system and an imaging method for computer flat screen plate making. Background technique [0002] Computer-to-plate CTP system is a comprehensive and multidisciplinary product, which integrates new technologies such as optical technology, electronic technology, color digital image technology, computer software and hardware, precision instruments and plate technology, automation technology, and network technology. In one high-tech product. Its structure is mainly composed of three parts: mechanical system, optical system and circuit system. One of the technical keys of computer-to-plate is that the printing plate and the imaging system must match, because the chemical substance on the surface of the printing plate has a very close relationship with the laser energy transmitted to it. In order to meet this key requirement, the direct plate-making te...

AI Technical Summary

Problems solved by technology

One of the technical keys of computer-to-plate is that the printing plate and the imaging system must match, because the chemical substance on the surface of the printing plate has a very close relationship with the laser energy transmitted to it. In order to meet this key requirement, the direct plate-making technology can be It can be summarized as: working method, laser technology and plate material technology, but the existing optical imaging system is often relatively single, does not have the characteristics of continuously adjustable resolution, small imaging distortion, and high energy uniformity of the image plane. In view of the above problems, special Propose an optical system and imaging method for computer flat screen plate making

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