Photochromic plastic object with permanently increased contrast

Details Photochromic plastic object with permanently increased contrast Photochromic plastic object with permanently increased contrast

G - Physics

02

B

G02B 5/23 (2006.01) G02B 1/04 (2006.01)

Patent

CA 2380493

The invention relates to a photocromic plastic object, characterised by a permanently increased contrast relative to that of photocromic plastic objects available according to the state of the art. In other words, the photocromic plastic object according to the invention displays an improved contrast in the stationary state and in every phase, even during the darkening as well as during the lightening. Said plastic object can be used for as photocromic spectacle glass, in particular for sports glasses.

Objet photochrome en plastique qui se caractérise, par rapport aux objets photochromes en plastique correspondant à l'état actuel de la technique, par un contraste intensifié de manière permanente. En d'autres termes, l'objet photochrome en plastique selon la présente invention possède un contraste intensifié dans les états stationnaires et dans chaque phase tant pendant l'obscurcissement que pendant l'éclaircissement. L'objet photochrome en plastique selon la présente invention peut être utilisé en particulier comme verre de lunettes photochrome, de préférence pour des lunettes de sport.

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