Camera system
    1.
    发明授权
    Camera system 失效
    相机系统

    公开(公告)号:US5576779A

    公开(公告)日:1996-11-19

    申请号:US320555

    申请日:1994-10-11

    摘要: A camera system comprising a photographic lens having a plurality of lens units movable along a photographic optical axis when zooming, and a finder optic having a plurality of lens units movable along a finder optical axis when zooming, wherein the amounts of zooming movement of at least one of the lens units of the photographic lens and at least one of the lens units of the finder optic are the same.

    摘要翻译: 一种照相机系统,包括具有多个透镜单元的照相镜头,所述照相镜头在变焦时可沿摄影光轴移动;以及取景器光学器件,具有可在放大时沿着取景器光轴移动的多个透镜单元,其中至少 照相镜头的透镜单元之一和取景器光学元件的至少一个透镜单元是相同的。

    Compact varifocal lens
    2.
    发明授权
    Compact varifocal lens 失效
    紧凑型变焦镜头

    公开(公告)号:US5305148A

    公开(公告)日:1994-04-19

    申请号:US3668

    申请日:1993-01-12

    CPC分类号: G02B9/12 G02B15/177

    摘要: A varifocal lens is disclosed, comprising, from front to rear, a first lens unit of negative power, a second lens unit of positive power, and a third lens unit of negative power, all these lenses being moved along a common optical axis when the focal length of the entire lens system varies, wherein all the lens units each are constructed with either one lens, or two lenses, the total number of lenses being limited to 3 or 4, while still maintaining good optical performance.

    摘要翻译: 公开了一种变焦透镜,包括从前到后的负功率的第一透镜单元,正光焦度的第二透镜单元和负光焦度的第三透镜单元,当所述透镜沿着共同的光轴移动时, 整个透镜系统的焦距变化,其中所有透镜单元均由一个透镜或两个透镜构成,透镜的总数被限制为3或4,同时仍然保持良好的光学性能。

    High range zoom lens
    4.
    发明授权
    High range zoom lens 失效
    高范围变焦镜头

    公开(公告)号:US4695133A

    公开(公告)日:1987-09-22

    申请号:US717376

    申请日:1985-03-29

    CPC分类号: G02B15/173

    摘要: The disclosed zoom lens includes, from front to rear, a first lens unit of positive power, a second lens unit of negative power, a third lens unit of positive power, and a fourth lens unit. When zooming, the first and third lens units are axially moved independently of each other, the second lens unit remains stationary, and the fourth lens unit is axially moved but changes the direction of advance at an intermediate point in the zooming range.

    摘要翻译: 所公开的变焦镜头包括从前到后的正功率的第一透镜单元,负功率的第二透镜单元,正光焦度的第三透镜单元和第四透镜单元。 当变焦时,第一透镜单元和第三透镜单元彼此独立地轴向移动,第二透镜单元保持静止,并且第四透镜单元轴向移动,但是在变焦范围的中间点改变前进方向。

    Ultrawide angle zoom objective
    5.
    发明授权
    Ultrawide angle zoom objective 失效
    超宽角缩放目标

    公开(公告)号:US4477153A

    公开(公告)日:1984-10-16

    申请号:US375667

    申请日:1982-05-06

    IPC分类号: G02B13/04 G02B13/18 G02B15/16

    摘要: Disclosed is a two-component zoom objective having a first lens component of negative power and a second lens component of positive power with the variable air separation between the first and second components effecting zooming. The aforesaid first lens component is constructed with four lenses. The first lens counting from the front is given an aspheric surface, and the air lens defined by the second and third lenses counting from the front and the four lenses in the aforesaid first lens component are appropriately configured to increase the angular field up to an ultrawide angle, while still permitting good correction of aberrations.

    摘要翻译: 公开了具有负功率的第一透镜分量和正功率的第二透镜分量的双分量变焦目标,其中第一和第二分量之间的可变空气分离实现变焦。 上述第一透镜部件由四个透镜构成。 从前面计数的第一透镜被给予非球面,并且由前面计数的第二和第三透镜限定的空气透镜和上述第一透镜部件中的四个透镜被适当地构造成将角度场增加到最远 角度,同时仍然允许良好的像差校正。

    Optical system of variable magnification power
    8.
    发明授权
    Optical system of variable magnification power 失效
    可变放大倍率的光学系统

    公开(公告)号:US4836661A

    公开(公告)日:1989-06-06

    申请号:US556705

    申请日:1983-11-30

    申请人: Keiji Ikemori

    发明人: Keiji Ikemori

    IPC分类号: G02B15/173

    CPC分类号: G02B15/173

    摘要: In the disclosed optical system of variable magnification power, at least one component A of two components A and B has its refractive power varied so that the focal length of the entire system can be continuously varied throughout a range while maintaining the position of the image plane constant throughout the range.

    摘要翻译: 在所公开的可变放大倍率的光学系统中,两个分量A和B的至少一个分量A具有变化的折射力,使得整个系统的焦距可以在整个范围内连续变化,同时保持图像平面的位置 在整个范围内不变。

    Zoom lens
    9.
    发明授权
    Zoom lens 失效
    变焦镜头

    公开(公告)号:US4775228A

    公开(公告)日:1988-10-04

    申请号:US785455

    申请日:1985-10-08

    CPC分类号: G02B15/177

    摘要: A zoom lens whose first lens group, counting from front, has a negative refractive power and moves axially in differential relation to a following lens group to effect zooming, wherein the first lens group is constructed with a lens unit of negative power followed by another lens unit of positive power, whereby for focusing purposes, the negative lens unit is axially moved, while the positive lens unit is held stationary, to improve the stabilization of aberration correction throughout the entire focusing range.

    摘要翻译: 一种变焦透镜,其从前方计数的第一透镜组具有负折光力并且与后续透镜组以差分关系轴向移动以实现变焦,其中第一透镜组构造为具有负功率的透镜单元,之后是另一透镜 正功率单位,为了聚焦目的,负透镜单元被轴向移动,而正透镜单元保持静止,以改善整个聚焦范围的像差校正的稳定性。