Accession Number : AD0710021

Title :   POLARIZING SUNGLASSES AND POSSIBLE EYE HAZARDS OF TRANSMITTED RADIATION,

Corporate Author : DEFENCE STANDARDS LABS MARIBYRNONG (AUSTRALIA)

Personal Author(s) : Clark,B. A. J.

Report Date : 26 NOV 1968

Pagination or Media Count : 11

Abstract : Plastics sheet polarizers commonly used in polarizing sunglasses are inefficient polarizers of near infra-red radiation. If such material is used to observe an intense source of polarized visible and infra-red radiation, then large quantities of near infra-red radiation may be concentrated on the retina while the visible glare that normally acts as a warning may be absent. Practical situations in which this could happen are discussed, and calculations of energy intensity at the retina result in values that are considerably greater than the retinal damage threshold. Some precautions are discussed. (Author)

Descriptors :   (*EYEGLASSES, REVIEWS), INFRARED RADIATION, REFLECTION, HAZARDS, RETINA

Subject Categories : Protective Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE