发明名称 |
Light beam scanning device |
摘要 |
A prism anamorphic optical system is disposed in the path of deflected beam from a rotatable polygonal mirror or a galvano-mirror. This prism anamorphic optical system includes at least two prisms, so that different amounts of displacement of the deflected beam at each angle of deflection and in a direction perpendicular to the direction of deflection caused by the first of the prisms are corrected by the second and subsequent prisms, as viewed from the incidence side. Thus, a straight scanning line may be obtained.
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申请公布号 |
US4084881(A) |
申请公布日期 |
1978.04.18 |
申请号 |
US19760732408 |
申请日期 |
1976.10.14 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
HIRABAYASHI, YOICHI;MINAMI, SETSUO;GOSHIMA, TAKESHI |
分类号 |
G01R13/38;G02B13/10;G02B26/12;G02B27/00;(IPC1-7):G02B27/17 |
主分类号 |
G01R13/38 |
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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