The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 11, 2003
Filed:
Apr. 20, 2001
Applicant:
Inventors:
Toru Harada, Kanagawa, JP;
Tsukasa Yamada, Kanagawa, JP;
Ryuta Suzuki, Kanagawa, JP;
Yoshiharu Yabuki, Kanagawa, JP;
Junji Nishigaki, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Minami-Ashigara, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 5/22 ;
U.S. Cl.
CPC ...
G02B 5/22 ;
Abstract
An optical filter comprises a transparent support and a filter layer. The filter layer has an absorption maximum in the wavelength region of 560 to 620 nm. The absorption maximum has a half-width in the range of 5 to 50 nm. The optical filter properly absorbs undesired light component emitted from an image display apparatus (especially, a plasma display panel).