Optical lens having antireflective structure

Details Optical lens having antireflective structure Optical lens having antireflective structure

2006-03-23

2009-06-09

Choi, William C (Department: 2873)

Optical: systems and elements

Lens

Including a nonspherical surface

C359S719000

Reexamination Certificate

active

07545583

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.

REFERENCES:
patent: 7145721 (2006-12-01), Banish et al.
patent: 2007/0144700 (2007-06-01), Kobayashi et al.
patent: 2007/0159698 (2007-07-01), Taguchi et al.
patent: 2003-149443 (2003-05-01), None
patent: 2004-145003 (2004-05-01), None

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