A Compatibility Assessment of the Protective Integrated Hood Mask with ANVIS Night Vision Goggles
Final rept. Jan-Mar 1990
LOGICON TECHNICAL SERVICES INC DAYTON OH
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Potential compatibility problems found with the Protective Integrated Hood Mask PIHM and the Aviators Night Vision Imaging System ANVIS were evaluated. The PIHM is worn under a standard HGU-55P helmet and is designed to protect USAF aircrew members in a chemical environment. Visual acuity through ANVISPIHM, ANVIS horizontal and vertical intensified of view while wearing PIHM, and distortion and transmissivity of the PIHM visor were determined. Acuity through ANVIS with and without PIHM was assessed under quarter moon and starlight illumination. Acuity was tested using 20 and 90 contrast Landolt C targets depicted in one of four orientations. ANVISPIHM viewing resulted in acuity reductions of approximately 6 for both contrast levels at quarter moon illumination. No acuity loss was present at starlight illumination. Tests of horizontal and vertical ANVIS intensified fields of view resulted in no significant losses when PIHM was donned.
- Protective Equipment