IMPROVEMENTS IN GRADED, NEUTRAL-DENSITY FILMS FOR ATTENUATION OF VISIBLE LIGHT BY OPHTHALMIC LENSES
Abstract
IN AN EFFORT TO DERIVE GREATER PROTECTION TO THE VISUAL MECHANISM UNDER ADVERSE CONDITIONS, A SERIES OF METALS WERE EVALUATED AS OPTICAL NEUTRALS IN THE VISIBLE AND NEAR IR and UV. The most promising of these was titanium deposited as a neutral wedge on the concave surfaces of uncorrected ophthalmic lenses. Operational problems and the effect of graded-density variables encountered in depositing two-layer systems are discussed and some solutions are offered. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1962
- Accession Number
- AD0292974
Entities
People
- Robert E. Frazer