发明名称 |
Linear imaging lens element for a scanning optical system |
摘要 |
A linear imaging lens element for a scanning optical system in which light flux from a light source is formed as a linear image in the vicinity of a reflection surface of a light deflector includes a progressive power toric-aspherical surface being provided on either a surface facing the light source or on a surface facing the deflector. Cross-sectional configurations of the progressive power toric-aspherical surface, which are parallel with the plane including the optical axis and being perpendicular to the linear image, are made to be a circular arc, and the radius of curvature of each circular arc cross-sectional configuration is independently determined from the cross-sectional configuration lain on the plane which includes the optical axis and is parallel with the linear image.
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申请公布号 |
US6275318(B1) |
申请公布日期 |
2001.08.14 |
申请号 |
US19990339297 |
申请日期 |
1999.06.24 |
申请人 |
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
KAMIKUBO JUNJI;KOREEDA DAISUKE |
分类号 |
G02B26/10;G02B26/12;(IPC1-7):G02B26/08 |
主分类号 |
G02B26/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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