Invention Grant
US08976216B2 Light source unit, optical scanning device, and image forming apparatus
有权
光源单元，光学扫描装置和图像形成装置
- Patent Title: Light source unit, optical scanning device, and image forming apparatus
- Patent Title (中): 光源单元，光学扫描装置和图像形成装置
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Application No.: US13090654Application Date: 2011-04-20
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Publication No.: US08976216B2Publication Date: 2015-03-10
- Inventor: Yoshihiro Ohba , Satoru Sugawara , Toshihiro Ishii
- Applicant: Yoshihiro Ohba , Satoru Sugawara , Toshihiro Ishii
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Cooper & Dunham LLP
- Priority: JP2010-103074 20100428; JP2011-035380 20110222
- Main IPC: B41J2/385
- IPC: B41J2/385 ; G01D15/06 ; G03G15/01 ; B41J2/47 ; G02B5/00 ; G02B26/12 ; B41J2/455
Abstract:
A light source unit includes a surface-emitting laser array including light emitting units; and an apertured member provided on a light path of light beams emitted from the surface-emitting laser array, the apertured member including an aperture. In at least one direction, an intensity distribution of interference patterns caused by the light beams passing through the aperture includes an equal number of crests and troughs.
Public/Granted literature
- US20110267415A1 LIGHT SOURCE UNIT, OPTICAL SCANNING DEVICE, AND IMAGE FORMING APPARATUS Public/Granted day:2011-11-03
Information query
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