CPC G02B 5/003 (2013.01) [A61L 9/20 (2013.01); G02B 5/208 (2013.01); A61L 2209/12 (2013.01); A61L 2209/15 (2013.01)] | 18 Claims |
16. An ultraviolet (UV) light comprising:
a grating structure comprising baffles provided at intervals, wherein an upper surface and a lower surface of each baffle further comprise a light absorption layer, adjacent baffles enclose each other to form a light outlet in a light emission direction of the light outlet, each baffle further comprises a first plate body, a second plate body and a third plate body connected in sequence, the second plate body is configured as a light filter, has a convex upper surface and a convex lower surface, and a height difference between the convex upper surface and the convex lower surface is greater than 1.5 mm.
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