Goggles, Night Vision, Measurement
Saturday, September 09, 2006
A Night Vision Goggle Measurement system has been designed and developed that consists of a light source, optical slit, collimator, diopterscope, and a large and a small rotary table. The Measurement system is divided into three functional areas; 1) accurate and automation control, 2) mechanical positioning and mounting and 3) optical viewing.
Two encoder DC motors are used to position two rotary tables. The larger rotary table holds the Goggles under test and is used for both FOV and magnification measurements. The smaller rotary table holds the diopterscope. Optical viewing is achieved with a collimator and a 6.025 mm by 7.0 mm slit used as a stationary target.
The key measurement features are to 1) provide accurate and automatic control of alignment, position, and motion of the rotary tables and 2) to perform data processing for FOV, magnification, and distortion valves calculation.
Source: NASA Tech Briefs, May 1995; J. S. Martin, H. H. Beasley and R. W. Verona, VES, Inc.; C. E. Rash, Army Aeromedical Research Laboratory, Fort Rucker, AL;. Diana Hemphill, Science Support Center USAARL, P.O. Box 620577, Fort Rucker, AL
Reference: MIL-A-49425 (CR)
Industrial Products
posted by JD52 @ 12:47 PM,
