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    • 9. 发明授权
    • Optical scanning device having a temperature compensation unit
    • 具有温度补偿单元的光学扫描装置
    • US07012724B2
    • 2006-03-14
    • US10912231
    • 2004-08-06
    • Hiromichi AtsuumiSeizo SuzukiSatoru Itoh
    • Hiromichi AtsuumiSeizo SuzukiSatoru Itoh
    • G02B26/08
    • G02B26/128Y10S359/90
    • 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.
    • 在根据本发明的光学扫描装置和图像形成装置中,光源发射光束,扫描光学单元使来自光源的光束偏转并聚焦偏转的光束,以在扫描的光束上形成光点 表面,被扫描的表面被来自扫描光学单元的光束扫描。 温度检测单元检测扫描光学单元及其相邻位置的温度。 温度补偿单元根据由温度检测单元检测到的温度变化来调整扫描面上的光束的焦点位置,温度补偿单元通过直接变化来调整光束的焦点位置 通过对应于温度变化的校正透镜沿着其光轴的受控量的运动,校正透镜对来自光源的光束的聚焦效果。