Reduction of Target Detectability by Laser Protective Materials.

摘要

An ideal laser protection material will provide the required optical density at the laser wavelength and be transparent at all other wavelengths. Although there are many ways to formulate a quality factor, the present study examines a method of combining luminous transmission with the detectability of low contrast targets. The present study examines how detectability of low contrast targets is affected by two popular ruby laser protectors. In order to study the effect of color rendition only, neutral density filters were used to equate the luminous transmission of the two goggles. Theoretical considerations of how these goggles might perform is given. To obtain the effects of protective materials on detectability, the contrast required for the detection of various achromatic targets was measured. The targets consisted of fourteen gratings which subtended visual angles from 2.26 minutes per line pair up to 68.4 minutes per line pair.