光栅光阀光学特性分析及其在热敏CTP中的应用  

Optical characteristics analysis of grating light valve and application in thermal CTP system

作　　者：缪斌鹰 唐正宁[1] 

机构地区：[1]江南大学物联网工程学院,江苏无锡214122

出　　处：《光学技术》2014年第4期371-375,共5页Optical Technique

摘　　要：光栅光阀(GLV)是一种衍射MOEMS空间光调制器,利用其对激光束的调制作用,可成功地应用于计算机直接制版(CTP)系统中。提出了简化的光栅光阀光学模型,并根据夫琅和费单缝衍射理论和多光束干涉理论对光栅光阀的光学特性进行了理论分析。介绍了光栅光阀在热敏CTP系统中的应用,分析了光栅光阀光学记录设备的结构和成像原理。得出了基于GLV技术的热敏CTP数字成像过程,为国内印刷企业使用这种热敏成像技术提供了理论依据。The grating light valve（GLV）is a diffractive MOEMS spatial light modulator,and it has been successfully applied in the computer-to-plate（CTP）system by modulating laser beams.A simplified grating light valve optical model is put forward,and the optical characteristics of GLV is analyzed according to Fraunhofer single-slit diffraction theory and multiple beam interference theory.The application of grating light valve in thermal CTP system is described,and the structure and imaging principle of GLV optical write engine are analyzed.The digital imaging process of the GLV-based thermal CTP system is concluded,which provides the theory basis for the domestic printing enterprise to use the thermal imaging technology.

关 键 词：光栅光阀(GLV) 简化光学模型 热敏CTP系统 光学记录设备 

分 类 号：TN256[电子电信—物理电子学]