发明名称 |
Optical scanner and image forming apparatus |
摘要 |
The over-field type optical scanner includes a first imaging optical system disposed between a light source and a rotating polygon mirror for forming, on one surface of the rotating polygon mirror, a linear image with a width larger than a width along a main scanning direction of the one surface of the rotating polygon mirror; and a second imaging optical system composed of a curved mirror for focusing, on a scan surface, a light beam having been reflected by the rotating polygon mirror. The first imaging optical system includes a first conversion optical system for converting the light beam emitted from the light source into a divergent light beam with respect to the main scanning direction and into a convergent light beam with respect to the sub scanning direction; and a second conversion optical system having a refracting power in the main scanning direction.
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申请公布号 |
US2005128549(A1) |
申请公布日期 |
2005.06.16 |
申请号 |
US20040006640 |
申请日期 |
2004.12.08 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YOSHIKAWA MOTONOBU;YAMAMOTO YOSHIHARU;MATSUKI DAIZABURO |
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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主权项 |
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地址 |
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