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:
Apr. 08, 2008
Filed:
Jul. 29, 2005
Yoichi Suzuki, Kanagawa, JP;
Tadashi Masuda, Kanagawa, JP;
Yoshinori Morimoto, Kanagawa, JP;
Kenichi Saito, Kanagawa, JP;
Yoichi Suzuki, Kanagawa, JP;
Tadashi Masuda, Kanagawa, JP;
Yoshinori Morimoto, Kanagawa, JP;
Kenichi Saito, Kanagawa, JP;
Fujifilm Corporation, Tokyo, JP;
Abstract
The optical scanning apparatus includes a light amount reducing filter such as a neutral density filter which has transmittance ηsatisfying an expression η=(W/W)/(η×η×η) and a light amount reducing function using absorption or reflection and which is disposed between a laser light source and an AOM on an optical path of laser light beam. In the expression, Wdenotes the amount of light emitted from the laser light source, Wdenotes the amount of light required for recording on a recording medium, ηdenotes diffraction efficiency in the AOM, ηdenotes a sum of reflectances of reflective optical elements located between the laser light source and a surface to be scanned, of the recording medium, and ηdenotes a sum of transmittances of transmissive optical elements located between the laser light source and the surface to be scanned, other than transmittance of the neutral density filter.