| CPC G02B 1/115 (2013.01) [G02B 1/18 (2015.01)] | 32 Claims |

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1. A lens, comprising:
a lens unit;
an uneven layer disposed on at least a portion of a surface of the lens unit;
a buffer layer covering the uneven layer and having a shape conforming to an uneven surface of the uneven layer; and
a water-repellent layer covering the buffer layer,
wherein the uneven layer has a reflectivity of 0.2 or less in the visible light region at least in a range of 400 nm to 780 nm,
wherein the uneven layer comprises an uneven structure having an irregular shape, and
wherein the uneven layer comprises a cavity, edges of the cavity are comprised of the uneven structure, and the uneven structure surrounds the cavity.
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