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    • 10. 发明申请
    • PROJECTION LENS APPARATUS
    • 投影镜头装置
    • WO2012127323A3
    • 2013-01-17
    • PCT/IB2012000699
    • 2012-03-20
    • SCRAM TECHNOLOGIES ASIA LTDKIM DONGHAKIM MANKYUMSON BYEONGSOO
    • KIM DONGHAKIM MANKYUMSON BYEONGSOO
    • G02B13/16G02B9/12G02B13/18G02B13/22G02B27/18G03B21/00
    • G02B13/16G02B9/12G02B13/006
    • A projection lens apparatus for enlarging an image of a pixelized panel on a screen includes a first lens group, a second lens group, and a third lens group. The first lens group has a positive power and includes a telecentric lens for telecentrically adjusting a beam emitting from the panel, and an achromatic lens for calibrating a chromatic aberration of the beam which has passed through the telecentric lens. The second lens group has a positive power and includes an aperture stop for adjusting an amount of beams introduced from the first lens group, a first lens having a convex lens shape to have a positive power and configured to adjust power of the beam introduced through the aperture stop, and a second lens having a meniscus shape concavely curved toward the screen to reduce a size of the beam introduced from the first lens. The third lens group calibrates a distortion of the beam introduced from the second lens group, using a non-spherical lens having a meniscus shape convexly curved toward the screen so as to have a negative power.
    • 用于放大画面上的像素化​​面板的图像的投影透镜装置包括第一透镜组,第二透镜组和第三透镜组。 第一透镜组具有正的功率,并且包括用于远心地调节从面板发射的光束的远心透镜和用于校准已经通过远心透镜的光束的色差的消色差透镜。 第二透镜组具有正光焦度并包括用于调节从第一透镜组引入的光束量的孔径光阑,具有凸透镜形状的第一透镜以具有正光焦度并且被配置为调节通过第一透镜组引入的光束的光焦度 孔径光阑,以及具有向屏幕凹入弯曲的弯液面形状的第二透镜,以减小从第一透镜引入的光束的尺寸。 第三透镜组使用具有朝向屏幕凸出弯曲的弯月面形状的非球面透镜来校正从第二透镜组引入的光束的失真,从而具有负的功率。