Photochromic film, photochromic lens comprising the same,...

Optical: systems and elements – Optical modulator – Light wave temporal modulation

Reexamination Certificate

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Reexamination Certificate

active

07999989

ABSTRACT:
The present invention relates to a photochromic film comprising a photochromic dye and a resin component. The photochromic film has a nanoindentation hardness of equal to or greater than 800 nm on at least one of surfaces, surface A, thereof. The present invention further relates to a method of manufacturing a photochromic lens. The method of manufacturing a photochromic lens of the present invention comprises forming a photochromic film having a nanoindentation hardness ranging from 500 to 5000 nm on an outermost surface thereof as well as having a smaller nanoindentation hardness on a surface facing a first mold than that on the outermost surface by coating a photochromic liquid comprising a photochromic dye and a curable component on one surface of the first mold for formation of one of surfaces of a lens and subjecting the photochromic liquid to curing treatment, and a photochromic lens comprising a photochromic film on a lens substrate is obtained by means of the above first mold.

REFERENCES:
patent: 2005/0116381 (2005-06-01), Wong et al.
patent: 11-352302 (1999-12-01), None
patent: 2002-539291 (2002-11-01), None
patent: 2003-519398 (2003-06-01), None
patent: 00/55653 (2000-09-01), None
patent: 01/49478 (2001-07-01), None

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