光学瞄具宽光谱透射率检测及误差影响因素分析  

Optical Transmissivity Detection with Wide Spectrum for Optic Aiming Device and Analysis of Its Influencing Factors

作　　者：柳鸣[1] 张国玉[1] 安志勇[1] 王劲松[1] 夏洋[1] 

机构地区：[1]长春理工大学,吉林长春130022

出　　处：《激光与光电子学进展》2014年第6期82-87,共6页Laser & Optoelectronics Progress

摘　　要：透射率参数是评价光学瞄具成像亮度和清晰程度的重要参数,介绍了一种高精度的光学瞄具宽光谱透射率的检测系统。针对检测过程中影响检测精度的因素包括偏振的敏感性、光束偏移、系统的杂散光、探测器的非线性和空间均匀性,结合验证实验和光学模拟软件(tracepro)给出定量的分析以及仪器的合成不确定度。对于探测器非线性误差利用最小二乘法原理予以修正。标定实验表明,可见光波段的透射率测量误差小于0.35%,近红外波段透射率测量误差小于0.65%。Optical transmissivity parameter is an important parameter in evaluating the optic aiming device＇s imaging luminance and clarity. This paper introduces an optical transmissivity detection system with a wide spectrum coverage and high precision for the aiming device, which is mainly applied to the production and test process of the aiming device. Focused on influencing factors on the measurement accuracy in the detecting process including polarization, beam displacement, stray light, spatial uniformity and nonlinearity of detector, quantitative analyses by verification tests or tracepro simulations and combinded standard uncertainty of high- accuracy measurement for spectral transmissivity are presented. According to the nonlinear error of detector, a correction is carried out by using the principle of least square method. The results of the calibration experiment have proved that the accuracy of transmissivity parameter in visible and infrared bands arrive at 0.35% and 0.65%, respectively.

关 键 词：测量 光学瞄具 透射率检测 影响因素分析 最小二乘法 

分 类 号：TH745[机械工程—光学工程]