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    • 4. 发明公开
    • SUPPORT FOR OPTICAL ELEMENT AND IMAGE DRAWING APPARATUS
    • 支持光学元件和图像绘图设备
    • EP3309595A1
    • 2018-04-18
    • EP17193299.9
    • 2017-09-26
    • Hitachi-LG Data Storage, Inc.
    • OCHI, ManabuYAMASAKI, TatsuyaKAZAMA, AtsushiICHIKAWA, Fumihito
    • G02B7/182
    • G02B26/12G02B6/4257G02B7/182G02B26/0825G02B26/0883
    • A support structure for an optical element in which a variation in mounting posture is suppressed irrespective of an error in external dimensions of the optical element is provided, and an image drawing apparatus with less color irregularity is provided.
      [Solving Means] A housing formed with a first holding surface contact-holding a first surface of an optical element and a second holding surface contact-holding at least a portion of a ridge line separated from the first surface of the optical element, a first pressing member which presses the optical element toward the first holding surface, and a second pressing member which presses the optical element toward the second holding surface are provided, wherein an intersection angle of extrapolation surfaces obtained by extrapolating and extending the first and second holding surfaces is an acute angle, and wherein a first pressing position at which the first pressing member exerts a pressing force on the optical element is closer to the second holding surface than to a center of the optical element, and a second pressing position at which the second pressing member exerts a pressing force on the optical element is a position farther separated from the first holding surface than from the center of the optical element.
    • 本发明提供一种光学元件的支撑结构,其不论光学元件的外形尺寸的误差如何都能够抑制安装姿势的变化,并且提供色彩不规则性较小的图像描绘装置。 [解决手段]一种外壳,其形成有:第一保持表面,其与光学元件的第一表面接触并且第二保持表面与光学元件的第一表面分离的至少一部分棱线接触;第一 设置有将所述光学元件向所述第一保持面按压的按压部件和将所述光学元件向所述第二保持面按压的第二按压部件,所述第一保持面和所述第二保持面外插延长而得到的外插面的交叉角度为 所述第一按压部件对所述光学元件施加按压力的第一按压位置与所述光学元件的中心相比更靠近所述第二保持面,所述第二按压位置与所述第二按压位置相反, 对光学元件施加按压力的位置是与第一保持面相比离开第一保持面更远的位置 光学元件的中心。