Neutral-color gray photochromic plastic article

Details Neutral-color gray photochromic plastic article Neutral-color gray photochromic plastic article

G - Physics

02

B

G02B 5/23 (2006.01) C09K 9/02 (2006.01) G02B 1/04 (2006.01)

Patent

CA 2318239

The present invention concerns a neutral-color gray photochromic plastic article which remains almost completely color-neutral or gray both during darkening as well as during fade. The plastic article according to the invention may be employed as a neutral-color gray photochromic ophthalmic lens.

L'invention concerne un article en plastique photochromique gris neutre, qui garde une couleur sensiblement neutre, ou grise, en cas de diminution ou d'augmentation de la luminosité. L'article peut notamment être utilisé comme verre de lunettes photochromique gris neutre.

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