发明名称 |
Optical scanning device having a temperature compensation unit |
摘要 |
In an optical scanning device and image forming apparatus according to the present invention, a light source emits a light beam, and a scanning optical unit deflects the light beam from the light source and focuses the deflected light beam to form a light spot on a scanned surface, the scanned surface being scanned by the light beam from the scanning optical unit. A temperature detection unit detects a temperature of the scanning optical unit and its neighboring locations. A temperature compensation unit adjusts a focal-point position of the light beam on the scanned surface in accordance with a change in the temperature detected by the temperature detection unit, the temperature compensation unit adjusting the focal-point position of the light beam by directly varying a focusing effect of a corrector lens on the light beam from the light source by a controlled amount of movement of the corrector lens along its optical axis that corresponds to the temperature change.
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申请公布号 |
US2005018265(A1) |
申请公布日期 |
2005.01.27 |
申请号 |
US20040912231 |
申请日期 |
2004.08.06 |
申请人 |
ATSUUMI HIROMICHI;SUZUKI SEIZO;ITOH SATORU |
发明人 |
ATSUUMI HIROMICHI;SUZUKI SEIZO;ITOH SATORU |
分类号 |
G02B26/12;(IPC1-7):G02B26/08 |
主分类号 |
G02B26/12 |
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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