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GB973341A - A light responsive component, a photoelectric light measurement device incorporatingthe same and a process for the manufacture of such a light responsive component - Google Patents

A light responsive component, a photoelectric light measurement device incorporatingthe same and a process for the manufacture of such a light responsive component

Info

Publication number
GB973341A
GB973341A GB40182/60A GB4018260A GB973341A GB 973341 A GB973341 A GB 973341A GB 40182/60 A GB40182/60 A GB 40182/60A GB 4018260 A GB4018260 A GB 4018260A GB 973341 A GB973341 A GB 973341A
Authority
GB
United Kingdom
Prior art keywords
responsive component
light
light responsive
photoresistor
photovoltaic cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB40182/60A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agfa Gevaert NV
Original Assignee
Agfa AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agfa AG filed Critical Agfa AG
Publication of GB973341A publication Critical patent/GB973341A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/24—Arrangements for performing computing operations, e.g. operational amplifiers for evaluating logarithmic or exponential functions, e.g. hyperbolic functions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing
    • G01J1/4214—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for view-taking apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing
    • G01J1/4223—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for copy - or printing apparatus
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/22—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with temperature or height, e.g. in aircraft
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F99/00—Subject matter not provided for in other groups of this subclass

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

973, 341. Photo-electric photometers. AGFA A.G. Nov. 22,1960 [Nov. 25, 1959], No. 40182/60. Heading G1A. [Also in Division H1] A photometer comprises a photovoltaic cell and a photoresistor located on a common electrically conducting base plate for exposure to illumination, and so connected electrically that variation in illumination causes variation in the resistance of the photoresistor to vary the effective loading of the photovoltaic cell. The photovoltaic cell 6, Fig. 3, is shunted by a photoresistor 7 and fixed resistors 10,11 to produce a deflection on a galvanometer 8 which varies as the logarithm of the illumination on the elements 6 and 7. In a simpler embodiment, Fig. 2, (not shown) resistors 10 and 11 are omitted. The photometer may be incorporated in a photographic camera or an exposure meter. The components indicated by the chain line 25 may be formed as an integrated circuit (see Division H1).
GB40182/60A 1959-11-25 1960-11-22 A light responsive component, a photoelectric light measurement device incorporatingthe same and a process for the manufacture of such a light responsive component Expired GB973341A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA33364A DE1155201B (en) 1959-11-25 1959-11-25 Light receivers, in particular exposure regulators or exposure meters for photographic purposes

Publications (1)

Publication Number Publication Date
GB973341A true GB973341A (en) 1964-10-21

Family

ID=6928133

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40182/60A Expired GB973341A (en) 1959-11-25 1960-11-22 A light responsive component, a photoelectric light measurement device incorporatingthe same and a process for the manufacture of such a light responsive component

Country Status (4)

Country Link
CH (1) CH381444A (en)
DE (1) DE1155201B (en)
GB (1) GB973341A (en)
NL (1) NL258177A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3502891A (en) * 1967-03-22 1970-03-24 Bell Telephone Labor Inc Variable reflectance memory device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2540625A1 (en) * 1983-02-04 1984-08-10 Somfy LIGHT INTENSITY SENSOR

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750797C (en) * 1942-08-11 1945-01-29 Photo or cinematographic recording device with preferably automatic adjustment of camera setting members by a photoelectric exposure meter
DE1044298B (en) * 1952-04-29 1958-11-20 Standard Elektrik Lorenz Ag Photo element
DE1027902B (en) * 1954-05-12 1958-04-10 Gossen & Co Gmbh P Photoelectric light meter
DE1084565B (en) * 1958-03-14 1960-06-30 Gossen & Co Gmbh P Photoelectric exposure controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3502891A (en) * 1967-03-22 1970-03-24 Bell Telephone Labor Inc Variable reflectance memory device

Also Published As

Publication number Publication date
DE1155201B (en) 1963-10-03
CH381444A (en) 1964-08-31
NL258177A (en)

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