发明申请
US20080068689A1 DIFFRACTIVE-OPTICAL ELEMENT, SCANNING OPTICAL SYSTEM, OPTICAL SCANNER, AND IMAGE FORMING APPARATUS
有权
衍射光学元件，扫描光学系统，光学扫描仪和图像形成装置
- 专利标题： DIFFRACTIVE-OPTICAL ELEMENT, SCANNING OPTICAL SYSTEM, OPTICAL SCANNER, AND IMAGE FORMING APPARATUS
- 专利标题（中）： 衍射光学元件，扫描光学系统，光学扫描仪和图像形成装置
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申请号： US11850401申请日： 2007-09-05
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公开(公告)号： US20080068689A1公开(公告)日： 2008-03-20
- 发明人: Kenichiro SAISHO , Yoshinori Hayashi , Kohji Sakai
- 申请人： Kenichiro SAISHO , Yoshinori Hayashi , Kohji Sakai
- 优先权： JP2006-251482 20060915; JP2006-308606 20061115
- 主分类号： G02B26/10
- IPC分类号： G02B26/10 ; G02B5/18
摘要：
A diffractive-optical element that is transparent includes a diffraction surface that is formed by a step. A width of the step is set substantially equal to a common multiple of λi/{n(λi)−1} for two or more wavelengths, where λi (i=1, 2, . . . ) is a wavelength and n(λi) is a refractive index with respect to the wavelength λi.
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