Optical element
OwnerKazuhiro Arai, Kazuhiro Koga +1inventors
InventorsKAZUHIRO ARAI, KAZUHIRO KOGA, JUNJI KAWASAKI
Life of this patent
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Abstract
To prevent peeling of a metal film or an adhesion layer due to a thermal change in an optical element having a fine structure, provided is an optical element that includes a resin substrate having a base portion and a fine structure; and a metal film on a side surface of the fine structure. The convex structures are each formed at a corner portion formed by the side surface of the fine structure on which the metal film is formed, and a surface of the base portion, and an average value of volumes of the convex structures is 14,800 nm3 or more and 83,000 nm3 or less.
Claims16
An optical element comprising:
- a resin substrate having:
- a base portion, and
- a fine structure protruding from the base portion;
- a metal film formed on at least a part of a side surface of the fine structure;
- and
- a plurality of convex structures,
- wherein each convex structure of the plurality of convex structures is provided on a respective side surface on which the metal film is formed, and
- wherein an average value of volumes of the plurality of convex structures is 14,800 nm3 or more and 83,000 nm3 or less.
An optical element comprising:
- a resin substrate having:
- a base portion, and
- a fine structure protruding from the base portion;
- an adhesion layer configured to cover a surface of the resin substrate;
- a metal film formed on at least a part of a side surface of the fine structure via the adhesion layer;
- and
- a plurality of convex structures,
- wherein each convex structure of the plurality of convex structures is provided on a surface of the base portion, and
- wherein an average value of volumes of the plurality of convex structures is 14,800 nm3 or more and 83,000 nm3 or less.
Dependencies are inferred from the claim text.