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    • 1. 发明授权
    • Fixed-focus lens
    • 定焦镜头
    • US07639433B1
    • 2009-12-29
    • US12331716
    • 2008-12-10
    • Hsin-Te ChenKuo-Chuan Wang
    • Hsin-Te ChenKuo-Chuan Wang
    • G02B9/60G02B9/34
    • G02B9/34G02B13/14
    • A fixed-focus lens including a first lens, a second lens, a cemented lens, an aperture stop, and a fifth lens is provided. The first lens disposed between an object side and an image side has a negative refractive power. The second lens disposed between the first lens and the image side has a positive refractive power. The cemented lens is disposed between the second lens and the image side. The cemented lens consists of a third lens and a fourth lens arranged in sequence from the object side to the image side. One of the third lens and the fourth lens has a positive refractive power, and the other has a negative refractive power. The aperture stop is disposed between the fourth lens and the image side. The fifth lens disposed between the aperture stop and the image side has a positive refractive power.
    • 提供了包括第一透镜,第二透镜,胶合透镜,孔径光阑和第五透镜的固定焦点透镜。 设置在物体侧和像侧之间的第一透镜具有负折光力。 设置在第一透镜和像侧之间的第二透镜具有正折射光焦度。 胶合透镜设置在第二透镜和图像侧之间。 胶合透镜由从物体侧到像侧依次布置的第三透镜和第四透镜组成。 第三透镜和第四透镜中的一个具有正的折射光焦度,另一个具有负折光力。 孔径光阑设置在第四透镜和像侧之间。 设置在孔径光阑和像侧之间的第五透镜具有正的折光力。
    • 8. 发明授权
    • Fixed-focus lens
    • 定焦镜头
    • US07423819B1
    • 2008-09-09
    • US11969661
    • 2008-01-04
    • Fu-Ming ChuangYi-Hao KangHsin-Te ChenYun-Chin Liang
    • Fu-Ming ChuangYi-Hao KangHsin-Te ChenYun-Chin Liang
    • G02B13/04
    • G02B7/04G02B13/18
    • A fixed-focus lens including a first lens group, a second lens group, and a third lens group is provided. The first lens group has a negative refractive power, includes a plurality of lenses, and is disposed between an object side and an image side. The lenses of the first lens group include at least one aspheric lens. The second lens group is disposed between the first lens group and the image side and has a positive refractive power. The third lens group is disposed between the second lens group and the image side and has a positive refractive power. The third lens group includes a first triple cemented lens and a second triple cemented lens arranged from the object side to the image side in sequence.
    • 提供了包括第一透镜组,第二透镜组和第三透镜组的固定焦点透镜。 第一透镜组具有负屈光力,包括多个透镜,并且设置在物体侧和像侧之间。 第一透镜组的透镜包括至少一个非球面透镜。 第二透镜组设置在第一透镜组和像侧之间并且具有正折光力。 第三透镜组设置在第二透镜组和像侧之间并且具有正折光力。 第三透镜组包括从物体侧到像侧依次布置的第一三重胶合透镜和第二三重胶合透镜。
    • 10. 发明申请
    • FIXED-FOCUS LENS
    • 固定镜片
    • US20090015943A1
    • 2009-01-15
    • US12053266
    • 2008-03-21
    • Yi-Hao KangHsin-Te Chen
    • Yi-Hao KangHsin-Te Chen
    • G02B9/12
    • G02B13/16G02B9/12G02B13/18
    • A fixed-focus lens including a first lens group, a second lens group and a third lens group which are arranged in sequence from an object side to an image side is provided. The first lens group has a negative refractive power and includes a first lens and a second lens arranged in sequence from the object side to the image side, and both having negative refractive powers. The first lens is an aspheric lens. The second lens group has a positive refractive power and includes a lens with positive refractive power. The third lens group has a positive refractive power and includes at least one first cemented lens. The fixed-focus lens satisfies 1.2
    • 提供了包括从物体侧到像侧依次布置的第一透镜组,第二透镜组和第三透镜组的固定焦点透镜。 第一透镜组具有负屈光力,并且包括从物体侧到像侧依次排列的第一透镜和第二透镜,并且具有负折射力。 第一透镜是非球面透镜。 第二透镜组具有正折光力并且包括具有正屈光力的透镜。 第三透镜组具有正屈光力并且包括至少一个第一胶合透镜。 固定焦距透镜满足1.2 <| fG1 / f | <4.2和2.8 <| fL2 / f | <8.6,其中f,fG1和fL2是固定焦点透镜,第一透镜组和第二透镜组的有效焦距 镜头。