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    • 8. 发明授权
    • Fixed focus lens and imaging system
    • 定焦镜头和成像系统
    • US08279536B2
    • 2012-10-02
    • US12801943
    • 2010-07-02
    • Ya-Ling HsuLong-Sheng LiaoSung-Nan ChenChao-Shun Chen
    • Ya-Ling HsuLong-Sheng LiaoSung-Nan ChenChao-Shun Chen
    • G02B17/00
    • G02B13/16G02B17/08
    • A fixed-focus lens capable of imaging a light valve disposed at a reduced side onto a magnified side is provided. The fixed-focus lens includes a first lens group, a second lens group, and a free form reflective mirror. The first lens group is disposed in the light path between the reduced side and the magnified side. The second lens group is disposed in the light path between the first lens group and the magnified side and includes a first free form lens. The free form reflective mirror is disposed in the light path between the second lens group and the magnified side. An imaging surface imaged from the light valve by the fixed-focus lens is a curved surface. An imaging system using the fixed-focus lens is also provided.
    • 提供了能够将设置在减小侧的光阀成像到放大侧的固定焦点透镜。 固定焦点透镜包括第一透镜组,第二透镜组和自由反射镜。 第一透镜组设置在缩小侧和放大侧之间的光路中。 第二透镜组设置在第一透镜组和放大侧之间的光路中,并且包括第一自由形式透镜。 自由形式反射镜设置在第二透镜组和放大侧之间的光路中。 通过固定焦点透镜从光阀成像的成像表面是曲面。 还提供了使用固定焦点透镜的成像系统。
    • 9. 发明授权
    • Imaging lens
    • 成像镜头
    • US08072695B1
    • 2011-12-06
    • US12972028
    • 2010-12-17
    • Poche LeeKuo-Wen ChangLong-Sheng Liao
    • Poche LeeKuo-Wen ChangLong-Sheng Liao
    • G02B9/60G02B13/18
    • G02B13/0045
    • An imaging lens includes plastic-made first, second, third, fourth, and fifth lens elements arranged in the given order from an object side to an imaging side, each having object-side and imaging-side surfaces facing toward the object and imaging sides, respectively. The first lens element has a positive focusing power, and the object-side surface thereof is a convex surface. The second lens element has a negative focusing power, and the imaging-side surface thereof is a concave surface. The third lens element has a positive focusing power, and each of the imaging-side and object-side surfaces thereof is a convex surface. The fourth lens element is a meniscus lens, and the imaging-side surface thereof is a convex surface. The imaging-side surface of the fifth lens element has a concave area in a vicinity of an optical axis of the fifth lens element.
    • 成像透镜包括从物体侧到成像侧以给定顺序布置的塑料制的第一,第二,第三,第四和第五透镜元件,每个透镜元件具有面向物体的物体侧和成像侧表面以及成像侧 , 分别。 第一透镜元件具有正的聚焦能力,并且其物侧表面是凸面。 第二透镜元件具有负聚焦功率,并且其成像侧表面是凹面。 第三透镜元件具有正的聚焦能力,并且其成像侧和物体侧表面中的每一个都是凸面。 第四透镜元件是弯月透镜,其成像侧表面是凸面。 第五透镜元件的成像侧表面在第五透镜元件的光轴附近具有凹入区域。