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FR1214121A - Improvements to photometers, especially for photography, cinematography and television - Google Patents

Improvements to photometers, especially for photography, cinematography and television

Info

Publication number
FR1214121A
FR1214121A FR1214121DA FR1214121A FR 1214121 A FR1214121 A FR 1214121A FR 1214121D A FR1214121D A FR 1214121DA FR 1214121 A FR1214121 A FR 1214121A
Authority
FR
France
Prior art keywords
cinematography
photometers
photography
television
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
Other languages
French (fr)
Inventor
Alphonse Martin
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
Application granted granted Critical
Publication of FR1214121A publication Critical patent/FR1214121A/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
    • G01J1/02—Details
    • G01J1/04—Optical or mechanical part supplementary adjustable parts
    • 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
    • G01J1/02—Details
    • G01J1/04—Optical or mechanical part supplementary adjustable parts
    • G01J1/0407—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
    • G01J1/0437—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings using masks, aperture plates, spatial light modulators, spatial filters, e.g. reflective filters
    • 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
    • G01J1/02—Details
    • G01J1/04—Optical or mechanical part supplementary adjustable parts
    • G01J1/0407—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
    • G01J1/0448—Adjustable, e.g. focussing
    • 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
    • G01J1/02—Details
    • G01J1/04—Optical or mechanical part supplementary adjustable parts
    • G01J1/06—Restricting the angle of incident light
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR1214121D 1957-10-24 1957-10-24 Improvements to photometers, especially for photography, cinematography and television Expired FR1214121A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1214121T 1957-10-24

Publications (1)

Publication Number Publication Date
FR1214121A true FR1214121A (en) 1960-04-06

Family

ID=9676865

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1214121D Expired FR1214121A (en) 1957-10-24 1957-10-24 Improvements to photometers, especially for photography, cinematography and television

Country Status (1)

Country Link
FR (1) FR1214121A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3134021A (en) * 1959-08-01 1964-05-19 Zeiss Ikon Ag Photoelectric exposure meters with light ray limiters
DE1192846B (en) * 1962-08-06 1965-05-13 Kodak Ag Device for light measurement
US3205796A (en) * 1961-10-28 1965-09-14 Eastman Kodak Co Photoelectric exposure meter with variable angular field
FR2282628A1 (en) * 1974-08-23 1976-03-19 Minnesota Mining & Mfg DIRECTIONAL RADIATION DETECTOR
EP0520973A1 (en) * 1991-06-27 1992-12-30 Financiere Des Applications De L'electricite S.A. Method and apparatus for measuring the luminance
EP0536081A1 (en) * 1991-08-27 1993-04-07 Optrel Ag Light protection filter with filtering element having electrically ajustable transmission

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3134021A (en) * 1959-08-01 1964-05-19 Zeiss Ikon Ag Photoelectric exposure meters with light ray limiters
US3205796A (en) * 1961-10-28 1965-09-14 Eastman Kodak Co Photoelectric exposure meter with variable angular field
DE1192846B (en) * 1962-08-06 1965-05-13 Kodak Ag Device for light measurement
FR2282628A1 (en) * 1974-08-23 1976-03-19 Minnesota Mining & Mfg DIRECTIONAL RADIATION DETECTOR
EP0520973A1 (en) * 1991-06-27 1992-12-30 Financiere Des Applications De L'electricite S.A. Method and apparatus for measuring the luminance
BE1004985A3 (en) * 1991-06-27 1993-03-09 Financ Applic Elec Luminance measurement method and apparatus for implementing the method.
US5323226A (en) * 1991-06-27 1994-06-21 Financiere Des Applications De L'electricity S.A. Method of measuring light levels and device for implementing this method
EP0536081A1 (en) * 1991-08-27 1993-04-07 Optrel Ag Light protection filter with filtering element having electrically ajustable transmission

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