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    Photographic process
    1.
    发明授权
    Photographic process 失效
    摄影过程

    公开(公告)号：US3779755A

    公开(公告)日：1973-12-18

    申请号：US3779755D

    申请日：1971-07-14

    Applicant: AGFA GEVAERT AG

    Inventor： SCHELLENBERGER H ,  VON RINTELEN H ,  RANZ E ,  SCHUTZ H

    IPC: G01J1/14 ,  G03C1/005 ,  G03C1/035 ,  G03C5/02 ,  G03F5/00 ,  G03C5/04

    CPC classification number: G03C5/02 ,  G01J1/14 ,  G03C1/005 ,  G03C1/035 ,  G03C2001/03564 ,  G03F5/00

    Abstract: The brightness and density distribution of an object can be digitally measured photographically by exposing a light-sensitive photographic material at a dot screen or the like and to the object to be measured, and photographically processing the exposed light-sensitive material to produce equidensity images in which different densities of the object are differently represented.

    Abstract translation: 物体的亮度和密度分布可以通过在点画面等曝光感光照相材料和被测定物体而进行数字测量，并照相处理曝光的感光材料以产生等距图像 对象的不同密度被不同地表示。

    Step tablet
    3.
    发明授权
    Step tablet 失效
    平板电脑

    公开(公告)号：US4588298A

    公开(公告)日：1986-05-13

    申请号：US556824

    申请日：1983-12-01

    Applicant: Masao Nakamura

    Inventor： Masao Nakamura

    IPC: G01J1/14 ,  G03C5/02 ,  G03D13/00 ,  G01N21/00

    CPC classification number: G03D13/007 ,  G01J1/14 ,  G03C5/02

    Abstract: A step tablet with which an amount of exposure or degree of exhaustion of a developing solution can very readily been determined. The step chart is composed of a number of rectangular patches of photosensitive material, arranged in an order of sensitivity. The steps are each marked with two indicia, one having an optical density corresponding, upon development, of a step of minimum optical density, while the other corresponds to a step of maximum optical density.

    Abstract translation: 可以非常容易地确定显影溶液的曝光量或消耗程度的步骤片剂。 步骤图由感光材料的多个矩形片组成，按照灵敏度的顺序排列。 这些步骤各自标记有两个标记，一个在开发时具有对应于最小光密度的步骤的光密度，而另一个对应于最大光密度的步骤。

    Photomicrographic methods and apparatus
    4.
    发明授权
    Photomicrographic methods and apparatus 失效
    显微照相方法和装置

    公开(公告)号：US3205767A

    公开(公告)日：1965-09-14

    申请号：US20454662

    申请日：1962-06-22

    Applicant: LEITZ ERNST GMBH

    Inventor： KLAUS WEBER ,  KARL LEONHARDT

    IPC: G01J1/14 ,  G02B21/00 ,  G03B7/02 ,  G03B7/08 ,  G03B27/80 ,  G03C5/04

    CPC classification number: G01J1/14 ,  G02B21/0096 ,  G03B7/02 ,  G03B7/0807 ,  G03B27/80 ,  G03C5/04

    Abstract: 969,811. Photomicrography; exposure control. ERNST LEITZ G.m.b. H. June 22, 1962 [June 28, 1961], No. 24076/62. Heading G2A. A light beam intensity control device for use in photomicrography comprises a device of variable light absorption arranged for insertion in a light path of a microscope by means controlled by a light sensitive member provided for measuring the intensity of the light beam after it has passed through the object so that the intensity of the light beam be adjusted for the exposure of photographic material of given sensitivity for a given exposure time. In the embodiment shown, light from a source ,1 passes through an object 5 which is photographed on a photosensitive surface 13 through a shutter 14. The shutter can be set to one of two speeds, one comparatively short the other comparatively long. For each speed the intensity of the light beam falling on surface 13 is varied by increase of a movable grey wedge or polarizing means controlled by a servomotor 19 and a control device 18. The device 18 is in turn controlled by a light sensitive element 17 on to which the light beam may be directed by means of a pivoted mirror 15. The object may be viewed by means of a half silvered mirror 7, reticule 9 and eye-piece 8.

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