Focus detection device
    23.
    发明授权
    Focus detection device 失效
    对焦检测装置

    公开(公告)号:US4561748A

    公开(公告)日:1985-12-31

    申请号:US610676

    申请日:1984-05-16

    IPC分类号: G02B7/32 G03B3/00

    CPC分类号: G02B7/32

    摘要: An active focus detecting device for use in a camera is provided and includes emitting light that is polarized, and collimated so that the light forms a light bundle which will pass near the optical axis of the objective lens, and then will be projected in a diverging light path after having been focused by the objective lens towards the object. A polarization component is provided for receiving the returning light and directing a component of that light towards a detector for determining a focusing condition.

    摘要翻译: 提供了一种用于照相机的主动焦点检测装置,包括发射被偏振和准直的光,使得光形成将在物镜的光轴附近通过的光束,然后投射在分散的 已被物镜聚焦在物体上之后的光路。 提供偏振分量用于接收返回光并将该光的分量导向检测器以确定聚焦条件。

    Lightweight inverted telephoto type wide angle lens system
    24.
    发明授权
    Lightweight inverted telephoto type wide angle lens system 失效
    轻量级倒置长焦型广角镜头系统

    公开(公告)号:US4286847A

    公开(公告)日:1981-09-01

    申请号:US79191

    申请日:1979-09-26

    IPC分类号: G02B13/04

    CPC分类号: G02B13/04

    摘要: The present invention is directed to an inverted telephoto type wide angle lens system having eight lens groups and eight lens elements which fulfill the following conditions:______________________________________ 0.75f

    摘要翻译: 本发明涉及一种具有八个透镜组和八个透镜元件的倒置长焦型广角透镜系统,其满足以下条件:-0.75f <| f1,2,3| <1.1f f1,2,3 <0- 0.89f

    Retrofocus wide angle lens system
    25.
    发明授权
    Retrofocus wide angle lens system 失效
    Retrofocus广角镜头系统

    公开(公告)号:US3981563A

    公开(公告)日:1976-09-21

    申请号:US575493

    申请日:1975-05-08

    申请人: Akiyoshi Nakamura

    发明人: Akiyoshi Nakamura

    IPC分类号: G02B9/64 G02B13/04

    CPC分类号: G02B13/04 G02B9/64

    摘要: A retrofocus wide angle lens system provides an increased field angle with a large aperture ratio. Besides the specific arrangement of the individual lens components in the various embodiments of the present invention, the retrofocus wide angle lens design further satisfies the following conditions: ##EQU1## WHEREIN R IS THE RADII OF CURVATURES FOR THE SUCCESSIVE LENS SURFACES FROM THE OBJECT TO IMAGE SIDE OF THE LENS SYSTEM; N.sub.I and N.sub.II represent the refractive indices of lenses forming a cemented doublet on the image side of the diaphragm; R represents the common radius of curvature of an intermediate surface of the doublet and f represents the overall focal length of the lens system.

    摘要翻译: 复焦广角镜头系统以大的开口率提供增大的视场角。 除了本发明的各种实施例中的各个透镜部件的具体布置之外,反向聚焦广角透镜设计还满足以下条件:r8 + r7>> -1.9; (a)r8 - r7 r14-0.05 <<0.6; 和(b)r13 0.1 NI-NII 0.3 <<(c)f R f其中R是从对象到镜头系统的图像侧的连续镜头表面的曲率的RADII; NI和NII表示在隔膜的像侧上形成胶合双峰的透镜的折射率; R表示双峰的中间表面的公共曲率半径,f表示透镜系统的总焦距。

    Data processing apparatus for variable bus width CPU
    26.
    发明授权
    Data processing apparatus for variable bus width CPU 失效
    可变总线宽度CPU的数据处理设备

    公开(公告)号:US5758108A

    公开(公告)日:1998-05-26

    申请号:US562347

    申请日:1995-11-22

    申请人: Akiyoshi Nakamura

    发明人: Akiyoshi Nakamura

    CPC分类号: G06F13/4018 G06F1/26

    摘要: A data processing apparatus in which the CPU can have different data bus widths is described. A variable power source is provided to supply a proper voltage to an installed CPU, and a CPU module has a feedback resistor that is connected to feedback terminals of the CPU module. By changing the resistance value of the feedback resistor in each CPU module, a proper output voltage can be provided to the installed CPU. The CPU module is provided with a terminal that generates a module determination signal used for making a determination of a module of the installed CPU module. Expanded RAM is provided with a terminal that generates a memory determination signal used for making a determination as to whether or not a memory is expanded. A memory controller and a bus control section perform a bus control function appropriate to the installed CPU and the installed memory in accordance with the module determination signal and the memory determination signal.

    摘要翻译: 描述了CPU可以具有不同数据总线宽度的数据处理装置。 提供可变电源以向安装的CPU提供适当的电压,并且CPU模块具有连接到CPU模块的反馈端的反馈电阻器。 通过改变每个CPU模块中反馈电阻的电阻值,可以向已安装的CPU提供正确的输出电压。 CPU模块设置有生成用于确定所安装的CPU模块的模块的模块确定信号的终端。 扩展RAM具有生成用于确定存储器是否扩展的存储器确定信号的终端。 存储器控制器和总线控制部分根据模块确定信号和存储器确定信号执行适合于所安装的CPU和安装的存储器的总线控制功能。

    Inverted telephoto type wide angle lens system with a rear focusing unit
    27.
    发明授权
    Inverted telephoto type wide angle lens system with a rear focusing unit 失效
    反相长焦型广角镜头系统,后置聚焦单元

    公开(公告)号:US4759619A

    公开(公告)日:1988-07-26

    申请号:US807308

    申请日:1985-12-10

    IPC分类号: G02B13/04 G02B9/00

    CPC分类号: G02B13/04

    摘要: An improvement of an inverted telephoto type wide angle lens system having, from the object to the image side a front lens group of a negative refractive power which is left stationary upon focusing, and a rear lens group of a positive refractive power which is shiftable for the purpose of focusing is disclosed. The improvement is characterized in that the lens system fulfills the following condition:2.65

    摘要翻译: 具有从物体到像侧的聚焦时保持静止的负折射力的前透镜组和正折射力的后透镜组的倒置长焦型广角镜头系统的改进,该透镜组可向 公开了聚焦的目的。 其改进之处在于,透镜系统满足以下条件:2.65 <| fF| / fR <7.5其中fF表示前透镜组的焦距,fF表示后透镜组的焦距。

    Automatic focusing device and automatic exposure control device
    28.
    发明授权
    Automatic focusing device and automatic exposure control device 失效
    自动对焦装置和自动曝光控制装置

    公开(公告)号:US4728980A

    公开(公告)日:1988-03-01

    申请号:US893363

    申请日:1986-08-04

    IPC分类号: G02B7/36 G03B7/091 G03B3/00

    CPC分类号: G02B7/36 G03B7/095

    摘要: An automatic focusing device which comprises a defocus amount detecting unit for detecting a defocus amount attributable to a first optical system of an interchangeable lens assembly and a second optical system of an AF convertor, a converting circuit for converting the defocus amount into a data corresponding to a focusing amount of the second optical system which varies in non-linear relationship to the defocus amount, and an optical drive unit for moving the second optical system on the basis of a data representative of the focusing amount supplied from the converting circuit.

    摘要翻译: 一种自动聚焦装置,包括:散焦量检测单元,用于检测归因于可互换透镜组件的第一光学系统的散焦量;以及AF转换器的第二光学系统;转换电路,用于将散焦量转换为对应于 第二光学系统的聚焦量以与散焦量非线性关系变化的光学驱动单元,以及用于基于表示从转换电路提供的聚焦量的数据移动第二光学系统的光学驱动单元。

    Auto-focusing system
    29.
    发明授权
    Auto-focusing system 失效
    自动对焦系统

    公开(公告)号:US4602861A

    公开(公告)日:1986-07-29

    申请号:US561972

    申请日:1983-12-16

    IPC分类号: G02B7/36 G03B3/00

    CPC分类号: G02B7/36

    摘要: An auto-focusing system includes a focus condition detector which detects the focus condition based on infrared light. A data producer is provided for producing a deflection signal indicating the difference between an image forming distance for infrared light and that for visible light, due to aberration. In accordance with the detected focus condition and deflection signal, an objective lens is shifted to a position for properly focusing an image of visible light on an image forming plane.

    摘要翻译: 自动聚焦系统包括:基于红外光检测聚焦条件的聚焦条件检测器。 提供数据生成器,用于产生指示由于像差而导致的用于红外光的图像形成距离和可见光的图像形成距离之间的差异的偏转信号。 根据检测到的对焦条件和偏转信号,将物镜转移到用于将可见光图像正确聚焦在图像形成平面上的位置。

    Method for injecting molten metal in vertical diecasting machine
    30.
    发明授权
    Method for injecting molten metal in vertical diecasting machine 失效
    在垂直压铸机中注入熔融金属的方法

    公开(公告)号:US4519436A

    公开(公告)日:1985-05-28

    申请号:US550907

    申请日:1983-11-10

    CPC分类号: B22D27/11 B22D17/12

    摘要: A method for injecting molten metal in a vertical diecasting machine. In order to efficiently produce high quality castings, a molten metal is injected into a mold cavity with the upper part of the mold cavity communicating with the atmosphere, the mold cavity is occluded before the completion of the injection, and then the molten metal is pressurized to suppress the trapping of air or gases in the casting.

    摘要翻译: 一种在垂直压铸机中注入熔融金属的方法。 为了有效地生产高质量的铸件,将熔融金属注射到模腔中,模腔的上部与大气连通,在注射完成之前模腔被封闭,然后熔融金属被加压 以抑制铸件中空气或气体的捕获。