Protective filter lens

Details Protective filter lens Protective filter lens

G - Physics

02

C

G02C 7/10 (2006.01)

Patent

CA 2343364

An ophthalmic, protective, filter lens, and a method of producing such lens, the lens having a ratio of Z and Y tristimulus values between 0.25-0.40, a dominant wavelength between 570-580 nm. on a color mixture diagram, a sharp transmission drop between 450-500 nm. and a transmission not over 30 % between 400-450 nm.

La présente invention concerne une lentille filtre protectrice à usage ophtalmique et un procédé de production d'une telle lentille. Cette lentille présente des valeurs de composantes trichromatiques Z et Y entre 0,25-0,40, une longueur d'onde dominante entre 570-580 nm sur un diagramme de mélange de couleurs, une baisse de transmission nette entre 450-500 nm, et une transmission ne dépassant pas 30 % entre 400-450 nm.

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