Lens Material Evaluation (Goggles,Sun,Wind,and Dust).

摘要

Optical evaluations of lenses considered as candidates to replace the visor in the combat vehicle crewman's protective goggles are described. The four areas of optical evaluation were: spectral transmission, haze, optical distortion, and abrasion resistance. All of the lenses were found to have adequate properties of transmissivity and freedom from haze. However, none of the lenses submitted for evaluation were medically acceptable because of excessive optical distortion. The optical coatings under consideration to increase scratch resistance of the polycarbonate lenses provided only negligible improvement. If polycarbonate is determined to be the material of choice, a higher optical quality should be used and a better method of providing abrasion resistance should be sought.