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    62.
    发明专利
    未知

    公开(公告)号：SU535468A1

    公开(公告)日：1976-11-15

    申请号：SU2090802

    申请日：1975-01-03

    IPC: G01J1/28

    Improvements in or relating to photoelectric exposure meters
    63.
    发明专利
    Improvements in or relating to photoelectric exposure meters 未知

    公开(公告)号：GB1023946A

    公开(公告)日：1966-03-30

    申请号：GB4082662

    申请日：1962-10-29

    Applicant: EASTMAN KODAK CO

    Inventor： LIESER ERNST

    IPC: G01J1/04 ,  G01J1/06 ,  G01J1/28 ,  G01J1/42

    Abstract: 1,023,946. Photo-electric exposure meters. EASTMAN KODAK CO. Oct. 29, 1962 [Oct. 28, 1961], No. 40826/62. Heading G1A. [Also in Division G2] In a photo-electric exposure meter in which the field of view of a photo-cell is varied by adjusting a diaphragm, the light flux on the cell is maintained constant for a constant scene luminance. The diaphragm B, Fig. 3, is adjusted by means of a ring 7 which simultaneously rotates a tube having a control slot 7a. A pin 12 engaging the control slot moves the photo-cell E axially of the tube to maintain the desired flux relationship. In a modification the pin, 15, Fig. 4, (not shown) rotates the cell E against a spring 17 so that the normal to the cell surface is not parallel with the optical system axis. In both embodiments a diffusing screen M is provided.

    Improved photometer for measuring reflected light
    64.
    发明专利
    Improved photometer for measuring reflected light 未知

    公开(公告)号：GB736676A

    公开(公告)日：1955-09-14

    申请号：GB586351

    申请日：1951-03-12

    Applicant: FREDERICK WILLIAM ENDICOTT

    IPC: G01J1/04 ,  G01J1/28 ,  G01J1/42

    Abstract: 736,676. Photometers; photographic-exposure meters. ENDICOTT, F. W. June 10, 1952 [March 12, 1951], No. 5863/51. Classes 97 (1) and 98 (1). A photometer, which may be adapted for measuring photographic exposures, comprises a casing containing a telescope having on its optical axis in proximity to the focus of the objective a small mirror peripherally surrounded by space and illuminated by a lamp in a side conduit of the casing so as to be superimposed on the image of the object formed by the objective, a regulator being provided to vary the current through the lamp until the mirror appears to be as bright as the parts of the image surrounding it, and an electric indicator such as a voltmeter to measure the voltage across the lamp. As shown the mirror 34 is formed on the end of a metal rod 33 arranged along the axis of the objective 25 and supported by a transparent disc so that the periphery of the mirror is entirely surrounded by space and is at or near the focus of the objective. Light from the lamp 30 falls on the mirror 34 which is viewed, together with the image of the object formed by the lens 25, in an eyepiece 24. The whole may be mounted in a casing containing batteries, a variable resistance in circuit with the lamp and a voltmeter. The casing may carry the usual exposure calculator. Filters may be used in the apparatus.

    65.
    发明专利
    未知

    公开(公告)号：DE443945C

    公开(公告)日：1927-05-11

    申请号：DEH0104992

    申请日：1926-01-15

    Applicant: FRANZ HIRSCHSON

    IPC: G01J1/28

    Detector and tracker
    66.
    发明专利
    Detector and tracker 未知

    公开(公告)号：AU2021203917B2

    公开(公告)日：2022-07-07

    申请号：AU2021203917

    申请日：2021-06-11

    Applicant: PLANET A ENERGY INC

    Inventor： HINES BRADEN ERIC

    IPC: G08B17/103 ,  G01J1/28

    Abstract: A system for detecting the aim of a concentrating solar collector. The system includes a plurality of baffled photodetectors which observe various regions of the target focal plane through a set of tailored apertures. When configured in an exemplary way, the detector system can mimic the behavior of a quad cell while achieving a safe standoff distance from the intense solar radiation at the focus.

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