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10 August 1998 New inline field tester on visual distance of night vision instrument with faint light
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Abstract
An important problem in-line visual distance testing of night vision instrument with faint light under the condition of field environment is put forward on the basis of practical use in this paper. Based on theoretical analysis through visual distance evaluation, some key parameter which affects visual distance testing are pointed out. And practically mathematical model used to evaluate visual distance is built up. Some problems which require the instrument with small volume, lightweight, long focal length of parallel light pipe to simulate target and high quality imagery etc. have been solved by using Carthegreen's design techniques, faint light luminous devices and high accuracy processing technology to resolve pattern etc. in this instrument. Also, by adding lightproof black cavity and using computer testing technique, the testing accuracy and computerization is greatly improved.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zhibin Chen and Yong Zhang "New inline field tester on visual distance of night vision instrument with faint light", Proc. SPIE 3558, Automated Optical Inspection for Industry: Theory, Technology, and Applications II, (10 August 1998); https://doi.org/10.1117/12.318372
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