Determination of the real performance for night vision systems

Marinica Mirzu

doi:10.1117/12.324550

19 August 1998 Determination of the real performance for night vision systems

Marinica Mirzu

Proceedings Volume 3573, OPTIKA '98: 5th Congress on Modern Optics; (1998) https://doi.org/10.1117/12.324550
Event: OPTIKA '98: Fifth Congress on Modern Optics, 1998, Budapest, Hungary

Abstract

The model for the detection of the images delivered by optoelectronical devices, developed by Rose on the base of fluctuation theory, establish the upper limit of their performance, it doesn't include the optical parameters, useful for a controlled optical design of the system components. The model presented take in account not only the degradation of the signal to noise ratio (S/N) on the photocathode but, in the same time, the noise of the amplification process in the image intensifier (noise factor) and the deterioration of the signal by the image formation optical components which are `low-pass' filters for spatial frequencies of the target. The final S/N is compared with the experimental determined S/N, required by the human eye to detect optoelectronical images, with a certain probability. The field experiments presented demonstrate the viability of the theoretical assumptions and relations. In this way, the optical design of this kind of devices may be conducted in a controlled way, without useless efforts and costs, with the certitude that the improved performances are obtained.

Citation Download Citation

Marinica Mirzu "Determination of the real performance for night vision systems", Proc. SPIE 3573, OPTIKA '98: 5th Congress on Modern Optics, (19 August 1998); https://doi.org/10.1117/12.324550

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