Optical element and optical apparatus

Details Optical element and optical apparatus Optical element and optical apparatus

2008-07-24

2010-12-28

Spector, David N (Department: 2873)

Optical: systems and elements

Lens

Selective wavelength transmitting or blocking

C359S569000, C359S580000, C359S581000

Reexamination Certificate

active

07859768

ABSTRACT:
The optical element includes in order from a light-entering side, a first layer (012), a second layer (013), and a base member (011). The first layer includes a concavo-convex structure with convex portions (012a) and concave portions (012b) alternately formed at a pitch smaller than a wavelength λ of entering light, and the second layer satisfies the following conditions:nb·n⁢⁢s-0.15≤n⁢⁢A≤nb·n⁢⁢s+0.10λ8·n⁢⁢A≤dA≤λn⁢⁢Awhere ns represents an effective refractive index of the first layer, nb represents a refractive index of the base member, and nA and dA respectively represent a refractive index and a thickness of the second layer.

REFERENCES:
patent: 4013465 (1977-03-01), Clapham et al.
patent: 5337183 (1994-08-01), Rosenblatt
patent: 7542197 (2009-06-01), Ishii et al.
patent: 7595927 (2009-09-01), Ishii et al.
patent: 2006/0199040 (2006-09-01), Yamada et al.
patent: 2009/0081361 (2009-03-01), Yamada et al.
patent: 2009/0185275 (2009-07-01), Liu et al.
patent: 2009/0190202 (2009-07-01), Moidu et al.
patent: 2010/0053760 (2010-03-01), Uchida et al.
patent: 2010/0118404 (2010-05-01), Endoh et al.
patent: 5-70040 (1975-06-01), None
patent: 5-27102 (1993-02-01), None
patent: 3135944 (2001-02-01), None
patent: 2004-284178 (2004-10-01), None
patent: 2006-259711 (2006-09-01), None
International Search Report and Written Opinion in PCT/JP2008/063716, (Nov. 4, 2008).

Affiliated with

Also associated with

Rating

Optical element and optical apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical element and optical apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical element and optical apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4179941