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:
Oct. 17, 2006
Filed:
Aug. 03, 2005
Yoji Okazaki, Kanagawa, JP;
Hiromi Ishikawa, Kanagawa, JP;
Kazuhiko Nagano, Kanagawa, JP;
Takeshi Fujii, Kanagawa, JP;
Hiromatsu Yamakawa, Saitama-ken, JP;
Yoji Okazaki, Kanagawa, JP;
Hiromi Ishikawa, Kanagawa, JP;
Kazuhiko Nagano, Kanagawa, JP;
Takeshi Fujii, Kanagawa, JP;
Hiromatsu Yamakawa, Saitama-ken, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
An optical fiber of a bundled fiber light source is an optical fiber whose core diameter is uniform but whose emission end cladding diameter is smaller than an incidence end cladding diameter thereof, and a light emission region thereof is made smaller. An angle of luminous flux from this higher luminance bundled fiber light source, which passes through a lens system and is incident on a DMD, is smaller, i.e., an illumination NA is made smaller. Thus, an angle of flux which is incident on a surface that is to be exposed is smaller. That is, a minute image formation beam can be obtained without increasing the image formation NA, focal depth is lengthen.