quality Finished Single Vision Photochromic Brown lens, comprising a substrate, the convex surface of the substrate is provided with a front coating, the concave surface of the substrate is provided with a rear coating, and the distance between the inner edge of the front coating and the substrate is from near to far The No. 1 color-changing coating, the No. 1 hard coating, the color-changing film, the No. 1 super-hard waterproof layer, the No. 1 anti-scratch and wear-resistant layer and the anti-fog coating are arranged in sequence, and the distance between the inner edge of the rear coating and the substrate is determined by The No. 2 color-changing coating, the No. 2 hard coating, the No. 2 super-hard waterproof layer and the No. 2 scratch-resistant and wear-resistant layer are arranged in sequence from near to far. , Through the two-layer color-changing coating, when the light shines on the lens, the light transmittance can be reduced, and then the effect of absorbing ultraviolet rays can be achieved, so as to achieve the effect of protecting people's glasses; and then add a color-changing film in the lens, which can Further improve the efficiency of the lens to absorb ultraviolet rays, so that the lens achieves a better effect of protecting the eyes.

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