FR1143904A - Phototransistor integrating light meter - Google Patents

Phototransistor integrating light meter

Info

Publication number
FR1143904A
FR1143904A FR1143904DA FR1143904A FR 1143904 A FR1143904 A FR 1143904A FR 1143904D A FR1143904D A FR 1143904DA FR 1143904 A FR1143904 A FR 1143904A
Authority
FR
France
Prior art keywords
phototransistor
light meter
integrating light
integrating
meter
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)
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Application granted granted Critical
Publication of FR1143904A publication Critical patent/FR1143904A/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
    • G01J1/4214—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for view-taking apparatus

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR1143904D 1956-02-29 1956-02-29 Phototransistor integrating light meter Expired FR1143904A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1143904T 1956-02-29

Publications (1)

Publication Number Publication Date
FR1143904A true FR1143904A (en) 1957-10-07

Family

ID=9644126

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1143904D Expired FR1143904A (en) 1956-02-29 1956-02-29 Phototransistor integrating light meter

Country Status (1)

Country Link
FR (1) FR1143904A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3298275A (en) * 1965-04-19 1967-01-17 Cons Electrodynamics Corp Comparison signal circuit for measuring intensity of spectral lines
DE1240295B (en) * 1964-02-06 1967-05-11 Kodak Ag Device for measuring exposure with a photocell and a diffuser that integrates the incident light from the object to be photographed
US3344703A (en) * 1963-10-04 1967-10-03 Richard D Milton Laser detector
DE1800797B1 (en) * 1968-05-24 1969-11-13 Gossen & Co Gmbh P Electronic lightning meter
US3486821A (en) * 1967-05-26 1969-12-30 Lawrence A Westhaver System for integrating light energy
US3495916A (en) * 1964-04-23 1970-02-17 Mornick Instr Co Light pulse meter
US3653764A (en) * 1970-01-22 1972-04-04 Arie Hendrik Gerrit Van Leeuwe Colorimeter

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344703A (en) * 1963-10-04 1967-10-03 Richard D Milton Laser detector
DE1240295B (en) * 1964-02-06 1967-05-11 Kodak Ag Device for measuring exposure with a photocell and a diffuser that integrates the incident light from the object to be photographed
US3495916A (en) * 1964-04-23 1970-02-17 Mornick Instr Co Light pulse meter
US3298275A (en) * 1965-04-19 1967-01-17 Cons Electrodynamics Corp Comparison signal circuit for measuring intensity of spectral lines
US3486821A (en) * 1967-05-26 1969-12-30 Lawrence A Westhaver System for integrating light energy
DE1800797B1 (en) * 1968-05-24 1969-11-13 Gossen & Co Gmbh P Electronic lightning meter
US3653764A (en) * 1970-01-22 1972-04-04 Arie Hendrik Gerrit Van Leeuwe Colorimeter

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