Predicting The Performance Of Night Vision Devices Using A Simple Contrast Model

William M. Decker IV

doi:10.1117/12.960911

5 September 1989 Predicting The Performance Of Night Vision Devices Using A Simple Contrast Model

William M. Decker IV

Proceedings Volume 1116, Helmet-Mounted Displays; (1989) https://doi.org/10.1117/12.960911
Event: SPIE 1989 Technical Symposium on Aerospace Sensing, 1989, Orlando, FL, United States

Abstract

Recent requirements have generated a demand for a computer model that can quickly produce spectral transmission curves and calculate the apparent contrast for night vision devices when viewing a target against a specified background. Since an operator might be looking through several optical elements that would act as filters it was necessary to have a capability to include multiple absorption filters. The contrast model is a Lotus 1-2-3 worksheet that retrieves the necessary data, calculates a relative intensity for both the target and the backbackground, spectrally displays these, then calculates the contrast. The target and background relative spectral intensity curves are then displayed on the screen allowing a quick, subjective analysis. The model will operate on virtually any MS-DOS computer. Each scenario is entered, processed and the relative spectral intensities and contrast calculated in just a few minutes, allowing the rapid analysis of many different scenarios in a short period of time.

Citation Download Citation

William M. Decker IV "Predicting The Performance Of Night Vision Devices Using A Simple Contrast Model", Proc. SPIE 1116, Helmet-Mounted Displays, (5 September 1989); https://doi.org/10.1117/12.960911

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