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US 8,027,090 B2Granted
Optical element, replica substrate configured to form optical element
AssigneeSony Corporation
InventorsSohmei Endoh, Tohru Nagai, Kazuya Hayashibe
Life of this patent
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Abstract
An optical element includes a base and many structures arranged at a fine pitch on a surface of the base, each of the structures being in the form of a projection or a depression, in which the structures constitute a plurality of arc tracks, and the structures in every three adjacent rows of the arc tracks are arranged in a tetragonal lattice pattern or a quasi-tetragonal lattice pattern.
Claims4
An optical element comprising:
- a base;
- and
- a plurality of structures arranged at a fine pitch on a surface of the base, each of the structures being in a form of a projection or a depression,
- wherein the structures constitute a plurality of arc tracks,
- wherein the structures in every three adjacent rows of the arc tracks are arranged in a tetragonal lattice pattern or a quasi-tetragonal lattice pattern, and
- wherein the tetragonal lattice pattern or the quasi-tetragonal lattice pattern is arranged in directions at 45° to the arc tracks.
3 more elements
A replica substrate configured to form an optical element, comprising:
- a base;
- and
- a plurality of structures arranged at a fine pitch on a surface of the base, each of the structures being in a form of a projection or a depression,
- wherein the structures constitute a plurality of arc tracks, and
- wherein the structures in every three adjacent rows of the arc tracks are arranged in a tetragonal lattice pattern or a quasi-tetragonal lattice pattern, and
- wherein the tetragonal lattice pattern or the quasi-tetragonal lattice pattern is arranged in directions at 45° to the arc tracks.
3 more elements
Dependencies are inferred from the claim text.