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Color Glasses
Jan 23, 2017

Photochromic glasses lenses to darken after the rays of the Sun. When the lighting after weakening, it becomes bright again. To be able to, because silver halide crystals at work. Under normal circumstances, it can keep perfect transparency of the lens. In sunlight exposure, the silver separated from Crystal, silver inside the lens of free-form small aggregates. These small silver aggregation of jagged, irregular blocks, they cannot be transmitted light, but can only absorb light, it will darken the lens. Is not of the light and dark, heavy Crystal form, lens back to bright State.