红外硫系光学玻璃条纹度测量及表征方法研究  

Measurement and Characterization Method of Striae for Infrared Chalcogenide Optical Glass

作　　者：胡向平 徐光以 麦绿波[2] 沈义梅 杨静[3] 陈振 李建新 HU Xiangping;XU Guangyi;MAI Lvbo;SHEN Yimei;YANG Jing;CHEN Zhen;LI Jianxin(Hubei New Huaguang Information Materials Co.,Ltd.,Xiangyang 441057,China;China Ordnance Industry Standardization Institute,Beijing 100089,China;Kunming Institute of Physics,Kunming 650223,China)

机构地区：[1]湖北新华光信息材料有限公司,湖北襄阳441057 [2]中国兵器工业标准化研究所,北京100089 [3]昆明物理研究所,云南昆明650223

出　　处：《红外技术》2020年第8期769-774,共6页Infrared Technology

摘　　要：红外硫系光学玻璃属于不透可见光的玻璃材料,采用GB/T 7962不能进行条纹度测试。本文针对上述材料中条纹度难以检测与表征的问题,提出了基于平行光投影法的测试方法,开发了相应测试设备,并对制备的硫系玻璃样品进行了条纹度、灰度及调制传递函数(MTF)测试,研究了灰度和调制传递函数(MTF)的对应关系,提出了用灰度表征条纹严重程度的方法。结果表明:平行光投影法在近红外波段成像能清晰地检测到样品内部条纹缺陷和分布;中红外调制传递函数(MTF)可定性表征样品中条纹对成像质量的影响;条纹度可定量表征样品内部条纹状况,反映对成像质量的影响。为后续该材料的内部质量判定奠定了技术基础。Infrared chalcogenide optical glass is a material that is opaque to visible light.The method outlined in GB/T 7962 cannot be used to test its striae.Herein,test methods based on parallel light projection are presented to facilitate striae detection and characterization.The corresponding test equipment(chalcogenide glass samples)are developed and tested for striae and grayscale and modulation transfer function(MTF);further,the relationship between grayscale and MTF is investigated.Subsequently,the characterization method of striae severity with grayscale is proposed.The results show that the defects and distribution of the inner striae can be clearly detected after imaging in the near infrared band by parallel light projection.The mid-infrared MTF can qualitatively characterize the effect of striae on imaging quality.The striae can be used to quantitatively characterize the internal striae condition of the sample and reflect the effect on imaging quality.This paper provides a reference for the subsequent determination of the internal quality of infrared chalcogenide optical glass.

关 键 词：红外硫系光学玻璃 不透可见光 条纹度 投影法 灰度表征 

分 类 号：TN213[电子电信—物理电子学]