Accession Number : ADD014009

Title :   Glare Susceptibility Tester.

Descriptive Note : Patent, filed 24 Feb 86, patented 16 Aug 88,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Task, Harry L

Report Date : 16 Aug 1988

Pagination or Media Count : 9

Abstract : An optical instrument and method for measuring susceptibility to glare of a human vision system is described which comprises a glare light source of preselected intensity sufficient to generate glare in the vision system of a subject, an acuity target having first opaque or partially transparent areas and second translucent areas defining a pattern of recognizable indicia on the target, a housing supporting target and source side-by-side for simultaneous viewing by the subject, and a reflective surface within the housing for directing light from the source onto the back surface of the target for substantially uniform transillumination of the target with light from the source. Optional optical filters may be placed between the source and subject, target and subject, or source and reflective surface, for selectively filtering light viewed by the subject. A movable cover plate may be included for selectively exposing the source to the subject in certain glare susceptibility measurements. Keywords: Patents. (KR)

Descriptors :   *GLARE, *MEASUREMENT, *OPTICAL INSTRUMENTS, *TEST EQUIPMENT, ACUITY, FILTERS, HOUSING(DWELLINGS), HUMANS, LIGHT, LIGHT SOURCES, OPTICAL FILTERS, PATENTS, REFLECTION, SOURCES, SURFACES, TARGETS, TRANSPARENCE, VISION

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE