Invention Grant
US08355037B2 Optical element used in optical scanning apparatus and optical scanning apparatus using same
有权
用于光学扫描装置的光学元件和使用该光学元件的光学扫描装置
- Patent Title: Optical element used in optical scanning apparatus and optical scanning apparatus using same
- Patent Title (中): 用于光学扫描装置的光学元件和使用该光学元件的光学扫描装置
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Application No.: US13046204Application Date: 2011-03-11
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Publication No.: US08355037B2Publication Date: 2013-01-15
- Inventor: Genichiro Kudo
- Applicant: Genichiro Kudo
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc. IP Division
- Priority: JP2010-059170 20100316
- Main IPC: B41J15/14
- IPC: B41J15/14 ; B41J27/00 ; G02B26/08 ; G02B27/44
Abstract:
An optical element used in an optical scanning apparatus includes a diffracting surface composed of a diffraction grating. The diffracting surface includes a diffraction grating having a sectional shape linearly formed. If diffraction power in a main scanning direction on the diffracting surface received by an axial light flux is φDO and refractive power in the main scanning direction on a refracting surface on which the diffraction grating is formed received by the axial light flux is φref, the optical element satisfies the following conditions: 0
Public/Granted literature
- US20110229205A1 OPTICAL ELEMENT USED IN OPTICAL SCANNING APPARATUS AND OPTICAL SCANNING APPARATUS USING SAME Public/Granted day:2011-09-22
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