| abstract |
(57) Abstract: A photochromic plastic lens which is colored in a sufficient density of brown or gray, has no color shift during color fading and long-term use, and has excellent transparency during color fading, and a method for producing the same. provide. SOLUTION: Photochromic particles comprising silver halide microcrystals, an inorganic oxide layer coating the silver halide microcrystals, and an organic material layer coating the inorganic oxide layer are provided with an organic solvent, The reverse micelles are synthesized in water droplets of a reverse micelle formed in a reverse micelle solution consisting of a surfactant and water and dispersed in a spectacle lens substrate. |