Exposure apparatus
    23.
    发明授权

    公开(公告)号:US5150391A

    公开(公告)日:1992-09-22

    申请号:US830449

    申请日:1992-02-05

    摘要: An exposure apparatus for transferring a pattern of an original onto a workpiece, includes a blocking member for defining a rectangular exposure region with respect to at least one of the original and the workpiece, wherein the exposure for the pattern transfer can be effected with the exposure region defined by the blocking member. Plural detection systems detect a positional deviation between the original and the workpiece, each of which is disposed so as to be associated with at least one of four sides of the rectangular exposure region. Plural first movable stages each is provided so as to be associated with at least one of the four sides, and each is adapted to carry thereon one of the detection systems disposed to be associated with a corresponding side. Each first movable stage comprises a single-axis stage movable in a direction parallel to a corresponding side. Plural second stages each carryies thereon corresponding one of the first movable stages, and each comprises a single-axis stage movable in a direction perpendicular to a corresponding side and in a direction parallel to the rectangular exposure region. Each second movable state is operable to displace the light blocking member to change the rectangular exposure region.

    Compact zoom lens
    24.
    发明授权
    Compact zoom lens 失效
    紧凑型变焦镜头

    公开(公告)号:US5011272A

    公开(公告)日:1991-04-30

    申请号:US329588

    申请日:1989-03-27

    IPC分类号: G02B15/16

    CPC分类号: G02B15/161

    摘要: A zoom lens including at least two lens units of which the front one is of positive refractive power and the rear one is of negative refractive power, the units being axially movable to decrease their separation in zooming from the wide angle to the telephoto end. At least one of the lens units is provided with at least one refractive index distribution type lens arranged on a common optical axis of the other lenses in order to achieve a great advance in compactness.

    摘要翻译: 一种变焦透镜,包括至少两个透镜单元,前者具有正折射光焦度,后一个具有负折光力,该单元可轴向移动以减小其从广角变焦到望远端的分离。 透镜单元中的至少一个设置有至少一个折射率分布型透镜,其布置在其它透镜的公共光轴上,以便实现紧凑性的大的进步。

    Variable focus optical device
    25.
    发明授权
    Variable focus optical device 失效
    可变焦光学器件

    公开(公告)号:US4859041A

    公开(公告)日:1989-08-22

    申请号:US137338

    申请日:1987-12-23

    申请人: Shigeyuki Suda

    发明人: Shigeyuki Suda

    IPC分类号: G02B3/00 G02B3/14 G02B26/00

    CPC分类号: G02B3/00

    摘要: A variable focus optical device comprises a plurality of elastic bodies laminated in the optical axis direction and a driving member having an opening provided on said elastic bodies and being capable of deforming the surfaces of said elastic bodies by applying a force onto said elastic bodies by said driving member to thereby permit the portion of said elastic bodies corresponding to the innerside of said opening to be protruded or recessed, the elastic body on the side of said driving member having a modulus greater than that of the elastic body adjacent thereto on the opposite side to said driving member, and the elastic body on said driving member side having a portion with the thickness being continuously decreased toward the optical axis.

    摘要翻译: 可变焦点光学装置包括沿光轴方向层叠的多个弹性体,以及驱动构件,其具有设置在所述弹性体上的开口,并且能够通过所述弹性体向所述弹性体施加力而使所述弹性体的表面变形 从而允许所述弹性体对应于所述开口的内侧的部分突出或凹陷,所述驱动构件侧的弹性体的模量大于与其相邻的弹性体的弹性体的相对侧 并且所述驱动构件侧的弹性体具有厚度朝向光轴持续减小的部分。

    Optical head device
    26.
    发明授权
    Optical head device 失效
    光头设备

    公开(公告)号:US4734905A

    公开(公告)日:1988-03-29

    申请号:US678593

    申请日:1984-12-05

    摘要: An optical head device comprising a light source unit, a deflecting element for changing the direction of travel of a light beam emitted from the light source unit, and a condensing element for condensing the light beam on a recording medium. A movable portion is formed so that the deflecting element and the condensing element move substantially together with each other relative to the recording medium, and the deflecting element is designed such that the variation in direction of the emergent light beam from the movable portion caused by the rotative displacement of the movable portion with respect to at least one axis can be decreased.

    摘要翻译: 一种光学头装置,包括光源单元,用于改变从光源单元发射的光束的行进方向的偏转元件和用于将光束会聚在记录介质上的聚光元件。 可动部分形成为使得偏转元件和聚光元件相对于记录介质基本上彼此相对移动,并且偏转元件被设计成使得由可移动部分引起的出射光束的方向的变化由 可移动部分相对于至少一个轴线的旋转位移可以减小。

    Non-spherical single lens
    27.
    发明授权
    Non-spherical single lens 失效
    非球面单镜头

    公开(公告)号:US4729645A

    公开(公告)日:1988-03-08

    申请号:US829966

    申请日:1986-02-18

    申请人: Shigeyuki Suda

    发明人: Shigeyuki Suda

    IPC分类号: G02B13/00 G02B3/04 G02B13/18

    CPC分类号: G02B3/04

    摘要: A non-spherical single lens comprises a first surface which is a non-spherical surface, the first surface being substantially zero in the curvature thereof near the optic axis and being of a non-spherical shape gradually displaced outwardly away from the optic axis, and a second surface which is a convex spherical surface of a radius of curvature r, .vertline.r.vertline. being a value equal or approximate to d which is the thickness of the lens.

    摘要翻译: 非球形单透镜包括第一表面,其是非球形表面,第一表面在其光轴附近的曲率中基本上为零,并且是非球形形状,其向外远离光轴向外移位,以及 作为曲率半径r的凸球面的第二面,| r |为与透镜的厚度相等或接近d的值。

    Gradient index single lens
    28.
    发明授权
    Gradient index single lens 失效
    渐变指数单镜头

    公开(公告)号:US4721369A

    公开(公告)日:1988-01-26

    申请号:US908255

    申请日:1986-09-17

    CPC分类号: G02B3/0087

    摘要: A gradient index single lens has a first surface convex toward the object side, the first surface lying on the object side when the lens is used at a reduction magnification, a second surface concave toward the image side, the second surface lying on the image side when the lens is used at a reduction magnification, and an index distribution formed in the interior of the lens, the index distribution having a sphere symmetrical distribution about a certain point on the optic axis.

    摘要翻译: 梯度折射率单透镜具有朝向物体侧凸起的第一表面,当以缩小倍率使用透镜时位于物体侧的第一表面,朝向像侧凹入的第二表面,位于像侧的第二表面 当透镜以缩小倍率使用,并且在透镜内部形成的折射率分布时,折射率分布在光轴上的某一点附近具有球体对称分布。