Accession Number : ADA298780

Title :   Video Method of Measuring Field-of-View of Electro-Optical Devices Versus Eye Clearances.

Descriptive Note : Final rept.,

Corporate Author : ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL

Personal Author(s) : McLean, William E.

PDF Url : ADA298780

Report Date : JUL 1995

Pagination or Media Count : 24

Abstract : A miniature charged couple device (CCD) video camera was used to determine the fields-of-view (FOV) with changes in viewing distances (vertex distance) for the standard 18-mm eyepiece ANVIS, a 25-mm eyepiece ANVIS, and two different diameter nonoptical apertures. The data were graphed and compared with theoretical and subjective values (Kotulak, 1992) for FOVs vs eye clearance for the standard 18-mm eyepiece ANVIS. The results indicate that the video camera used in this study approximates both the theoretical and subjectively measured FOV vs eye clearance functions with slight deviation. Computer generated ray traces and subjective assessment with the 25-mm eyepiece confirmed that the marginal rays for the maximum viewable FOVs were blocked at the designed eye position by the aperture on the back plate in front of the fiber optic twist of the intensifier tube. (MM)

Descriptors :   *ELECTROOPTICS, *HUMAN FACTORS ENGINEERING, *NIGHT VISION DEVICES, *OPTICAL DETECTORS, *OPTICAL LENSES, FIBER OPTICS, LINE OF SIGHT, OPTICAL IMAGES, HELICOPTERS, CAMERAS, VIDEO SIGNALS, RAY TRACING, VIEWERS, OPTICAL COUNTERMEASURES, VIDEO RECORDING, HELMET MOUNTED DISPLAYS, CLEARANCES, BINOCULARS, IMAGE INTENSIFIERS(ELECTRONICS), EYE MOVEMENTS, POSITIONING REACTIONS, CHARGE COUPLED DEVICES.

Subject Categories : Electrooptical and Optoelectronic Devices
      Optical Detection and Detectors
      Human Factors Engineering & Man Machine System

Distribution Statement : APPROVED FOR PUBLIC RELEASE