BE585153A - Dispositif transducteur. - Google Patents

Dispositif transducteur.

Info

Publication number
BE585153A
BE585153A BE585153A BE585153A BE585153A BE 585153 A BE585153 A BE 585153A BE 585153 A BE585153 A BE 585153A BE 585153 A BE585153 A BE 585153A BE 585153 A BE585153 A BE 585153A
Authority
BE
Belgium
Prior art keywords
transducer device
transducer
Prior art date
Application number
BE585153A
Other languages
English (en)
Inventor
David Sumner Grey
Peter Herman Mark
Original Assignee
Internaitonal Polaroid Corp
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 Internaitonal Polaroid Corp filed Critical Internaitonal Polaroid Corp
Publication of BE585153A publication Critical patent/BE585153A/fr

Links

Classifications

    • 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
    • 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
    • G01J1/4228—Photometry, e.g. photographic exposure meter using electric radiation detectors arrangements with two or more detectors, e.g. for sensitivity compensation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/26—Measuring radiation intensity with resistance detectors
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0041—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using thermistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0047—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using photo-electric elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/002—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers
    • H03G7/004—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers using continuously variable impedance devices
BE585153A 1958-12-04 1959-11-30 Dispositif transducteur. BE585153A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US77815558A 1958-12-04 1958-12-04
US836494A US3179808A (en) 1958-12-04 1959-08-27 Photosensitive transducer having predetermined output response

Publications (1)

Publication Number Publication Date
BE585153A true BE585153A (fr) 1960-05-30

Family

ID=41510723

Family Applications (1)

Application Number Title Priority Date Filing Date
BE585153A BE585153A (fr) 1958-12-04 1959-11-30 Dispositif transducteur.

Country Status (8)

Country Link
US (1) US3179808A (fr)
BE (1) BE585153A (fr)
CH (1) CH364636A (fr)
DE (1) DE1287323B (fr)
FR (1) FR1241490A (fr)
GB (1) GB911311A (fr)
NL (1) NL245569A (fr)
SE (1) SE301348B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3281602A (en) * 1963-09-20 1966-10-25 Honeywell Inc Turbidimeter using photoelectric linearizing circuit
US3521962A (en) * 1964-06-19 1970-07-28 Stanley Electric Co Ltd Light responsive and measuring device
US3515045A (en) * 1966-03-24 1970-06-02 Asahi Optical Co Ltd Camera coupled light measuring system
US3693518A (en) * 1968-01-02 1972-09-26 Nippon Kogaku Kk Memory circuit of an electric shutter
US5216248A (en) * 1990-11-08 1993-06-01 Asahi Kogaku Kogyo Kabushiki Kaisha Photodetector with mask for stable output signal
JPH0635027A (ja) * 1992-07-22 1994-02-10 Nikon Corp カメラの自動露出装置及びカメラの測光装置

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2032633A (en) * 1931-09-12 1936-03-03 Riszdorfer Odon Diaphragm for photographic cameras
US2188820A (en) * 1935-07-11 1940-01-30 Rissdorfer Odon Photographic camera
US2226602A (en) * 1937-01-18 1940-12-31 Gen Aniline & Film Corp Automatic setting device for shutters and diaphragms of photographic apparatus
US2186613A (en) * 1937-12-22 1940-01-09 Eastman Kodak Co Photographic camera
US2261532A (en) * 1938-11-08 1941-11-04 Tonnies Hans Ferdinand Photographic apparatus
US2524303A (en) * 1940-03-07 1950-10-03 Bonet-Maury Paul Photometer
DE750797C (de) * 1942-08-11 1945-01-29 Photo- oder kinematographisches Aufnahmegeraet mit vorzugsweise selbsttaetiger Einregelung von Kameraeinstellorganen durch einen photoelektrischen Belichtungsmesser
US2438825A (en) * 1945-06-16 1948-03-30 Trans Lux Corp Selector
US2482980A (en) * 1946-04-06 1949-09-27 Heinz E Kallmann Constant voltage source
US2766654A (en) * 1947-09-30 1956-10-16 Gen Electric Exposure meter with incident light attachment
US2586746A (en) * 1949-08-31 1952-02-19 Interchem Corp Photometric device
US2593616A (en) * 1949-12-16 1952-04-22 Rca Corp Electronic spectroscope
US2654845A (en) * 1952-11-07 1953-10-06 Cecil S Presenz Vapor detector
US2917969A (en) * 1954-03-18 1959-12-22 Kean W Stimm Light meter
US2742550A (en) * 1954-04-19 1956-04-17 Jr James R Jenness Dual photoconductive infrared detector
US2939361A (en) * 1955-05-20 1960-06-07 Leitz Ernst Gmbh Photometric apparatus compensated for fluctuations in light source intensity
US3028499A (en) * 1959-11-02 1962-04-03 Gen Electric Expanded scale photoelectric device

Also Published As

Publication number Publication date
CH364636A (fr) 1962-09-30
DE1287323B (de) 1969-01-16
FR1241490A (fr) 1960-09-16
NL245569A (fr) 1964-02-10
US3179808A (en) 1965-04-20
GB911311A (en) 1962-11-21
SE301348B (fr) 1968-06-04

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