Optical element having minute periodic structure

Optical: systems and elements – Lens – Selective wavelength transmitting or blocking

Reexamination Certificate

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C359S741000

Reexamination Certificate

active

10916121

ABSTRACT:
An optical element is disclosed which has a reflection suppressing function and a color balance correcting function in a minute periodic structure. The optical element has a base member and a minute periodic structure which is provided on a surface of the base member and has a period smaller than a wavelength of incident light on the optical element. The minute periodic structure has a characteristic that the reflectance of light a first wavelength on a short wavelength side in a wavelength range of the incident light is lower than the reflectance of light at a second wavelength on a long wavelength side in the wavelength range of the incident light.

REFERENCES:
patent: 6650477 (2003-11-01), Nakai
patent: 2002/0089750 (2002-07-01), Hoshi
patent: 2003/0058547 (2003-03-01), Hori et al.
patent: 2003/0112522 (2003-06-01), Fujimoto
patent: 2003/0156325 (2003-08-01), Hoshi
patent: 2003/0210468 (2003-11-01), Kato
patent: 2005/0036212 (2005-02-01), Saito
patent: 58-174906 (1983-10-01), None
patent: 2001-183506 (1983-10-01), None
patent: 01-252902 (1989-10-01), None
patent: 2001-183506 (2001-07-01), None

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