Optical lens having antireflective structure
AssigneePanasonic Corporation
InventorsKatsuhiko Hayashi, Yasuhiro Tanaka, Michihiro Yamagata
Life of this patent
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Abstract
An optical lens in which reflection is suppressed is provided by providing the optical lens with: a convex lens surface having, when the angle between a plane in contact with the lens surface and a direction perpendicular to the optical axis is an inclination angle, a maximum inclination angle of not less than 35 degrees and less than 90 degrees; and an antireflective structure provided on the lens surface and including structural elements that have a predetermined shape and are periodically arranged in an array form with a pitch smaller than the shortest wavelength of the incident light.
Claims18
An optical lens comprising:
- a convex lens surface having, when an angle between a plane in contact with the lens surface and a direction perpendicular to an optical axis is an inclination angle, a maximum inclination angle of not less than 35 degrees and less than 90 degrees;
- and
- an antireflective structure provided on the lens surface and including structural elements that have a predetermined shape and are arranged in an array form with a pitch smaller than a shortest wavelength of incident light.
An optical lens comprising:
- a convex lens surface having, when an angle between a plane in contact with the lens surface and a direction perpendicular to an optical axis is an inclination angle, a maximum inclination angle of not less than 35 degrees and less than 90 degrees;
- and
- the sheet including an antireflective structure provided on the lens surface and including structural elements that have a predetermined shape and are periodically arranged in an array form with a pitch smaller than a shortest wavelength of incident light.
Dependencies are inferred from the claim text.