Optical: systems and elements – Diffraction – From grating
Reexamination Certificate
2007-07-03
2007-07-03
Assaf, Fayez G. (Department: 2872)
Optical: systems and elements
Diffraction
From grating
C359S575000
Reexamination Certificate
active
10973616
ABSTRACT:
A light quantity distribution control element includes a substrate of 20 mm×20 mm×3 mm made of a material that transmits light, such as optical glass or acryl, and a antireflective structure provided on a surface of the substrate. As the antireflective structure, a conical antireflective structure of a pitch of 0.15 μm (periodic structure having conical convexities) is formed. This corresponds to a antireflective structure having a pitch of a wavelength or less in the ultraviolet band (150 nm to 400 nm) at the time when ultraviolet light is used as incident light.
REFERENCES:
patent: 5995286 (1999-11-01), Mukai et al.
patent: 7064899 (2006-06-01), Te Kolste et al.
patent: 7075722 (2006-07-01), Nakai
patent: 7094452 (2006-08-01), Yamashita et al.
patent: 2004/0257553 (2004-12-01), Totzeck
patent: 2007/0024975 (2007-02-01), McGrew
patent: 8-160338 (1996-06-01), None
patent: 2001-290093 (2001-10-01), None
patent: 2002-221605 (2002-08-01), None
Tanaka Yasuhiro
Yamagata Michihiro
Yamaguchi Hiroshi
Yamamoto Yoshiharu
Yoshikawa Motonobu
Assaf Fayez G.
Matsushita Electric Industrial Co. Ltd
McDermott Will & Emery LLP
LandOfFree
Light quantity distribution control element and optical... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Light quantity distribution control element and optical..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light quantity distribution control element and optical... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3791081