Back to results
US 2021/0333523 A1Published application
Lens system and image observation apparatus
AssigneeSony Interactive Entertainment Inc.
InventorsManabu Ishioka, Yasutoshi Katsuda, Shotaro Tada
Life of this patent
Estimating the term…
Abstract
Proposed is a lens system capable of providing, to a user, a high-definition image in which generation of concentric circles is reduced. The lens system has one or more Fresnel lenses. A lens surface of each of the Fresnel lenses has a plurality of grooves that is concentrically formed. Both a pitch which is the distance between two adjacent grooves and the depth of each of the plurality of grooves vary with the distance from an optical axis that passes through the center of the lens system.
Claims10
A lens system comprising:
- one or more Fresnel lenses, wherein
- a lens surface of each of the one or more Fresnel lenses has a plurality of grooves that is concentrically formed, and
- both a pitch that is a distance between two adjacent grooves and a depth of each of the plurality of grooves vary with a distance from an optical axis that passes through a center of the lens system.
An image observation apparatus comprising:
- a lens system including one or more Fresnel lenses, wherein
- a lens surface of each of the one or more Fresnel lenses has a plurality of grooves that is concentrically formed, and
- both a pitch that is a distance between two adjacent grooves and a depth of each of the plurality of grooves vary with a distance from an optical axis that passes through a center of the lens system.
Dependencies are inferred from the claim text.