DE1797325B2 - PHOTOMETRIC CIRCUIT ARRANGEMENT - Google Patents

PHOTOMETRIC CIRCUIT ARRANGEMENT

Info

Publication number
DE1797325B2
DE1797325B2 DE19681797325 DE1797325A DE1797325B2 DE 1797325 B2 DE1797325 B2 DE 1797325B2 DE 19681797325 DE19681797325 DE 19681797325 DE 1797325 A DE1797325 A DE 1797325A DE 1797325 B2 DE1797325 B2 DE 1797325B2
Authority
DE
Germany
Prior art keywords
circuit arrangement
photometric circuit
photometric
arrangement
circuit
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.)
Granted
Application number
DE19681797325
Other languages
German (de)
Other versions
DE1797325C (en
DE1797325A1 (en
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 filed Critical
Publication of DE1797325A1 publication Critical patent/DE1797325A1/en
Publication of DE1797325B2 publication Critical patent/DE1797325B2/en
Application granted granted Critical
Publication of DE1797325C publication Critical patent/DE1797325C/en
Expired legal-status Critical Current

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
    • G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing
    • 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
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/081—Analogue circuits
    • G03B7/083—Analogue circuits for control of exposure time

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Exposure Control For Cameras (AREA)
DE19681797325 1967-09-18 1968-09-13 Photometric circuit arrangement Expired DE1797325C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66849867A 1967-09-18 1967-09-18
US66849867 1967-09-18

Publications (3)

Publication Number Publication Date
DE1797325A1 DE1797325A1 (en) 1970-12-17
DE1797325B2 true DE1797325B2 (en) 1971-07-22
DE1797325C DE1797325C (en) 1973-04-19

Family

ID=

Also Published As

Publication number Publication date
FR1579828A (en) 1969-08-29
DE1797325A1 (en) 1970-12-17
GB1244736A (en) 1971-09-02

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)