像增强器亮度增益测试的重复性研究  

Repetitive characteristic of image intensifier′s luminance gain

作　　者：拜晓锋[1,2] 尹雷[1,2] 胡文[1,2] 师宏立[1,2] 贺英萍[1,2] 

机构地区：[1]微光夜视技术重点实验室,陕西西安710065 [2]北方夜视科技集团有限公司,云南昆明650223

出　　处：《红外与激光工程》2013年第2期495-498,共4页Infrared and Laser Engineering

基　　金：国防科研项目

摘　　要：亮度增益是衡量微光像增强器图像增强能力的一个重要技术指标,其直接影响着微光夜视系统的观察效果。为了提高像增强器亮度增益测试的重复性,在给像增强器提供稳定供电的条件下研究了光源色温、光源输出光亮度以及荧光屏发光亮度随时间的变化过程,分析了光源色温和光源输出光亮度对于亮度增益的影响机理以及荧光屏发光亮度对于亮度增益测试的影响过程,确定了光源的预热时间不少于15 min且像增强器的工作时间不少于1 min的结论。实际测试结果表明:当光源充分预热且严格控制像增强器的工作时间时测量得到的像增强器亮度增益的重复性优于3%。Luminance gain,which was directly affect the image quality of night vision system in low light level condition,was an important technological index to evaluate the ability to amply image light intensity.In order to improve the repetitive characteristic of image intensifier′s luminance gain,changing process of light source color temperature,light source output luminance and screen luminance had been studied respectively,theory of light source color temperature,light source output luminance and screen luminance impacting on luminance gain had been analyzed.The conclusion with warming-up of light source should not be less than 15 minutes and work time for image intensifier should not be less than 1 minute had been established.Test result showed that repetitive characteristic of image intensifier was better than 3% when light source had been warmed-up sufficiently and image intensifier′s work time was controlled strictly.

关 键 词：亮度增益 重复性 像增强器 色温 荧光屏 

分 类 号：TN223[电子电信—物理电子学]