CH377552A - Photoelectric light meter - Google Patents

Photoelectric light meter

Info

Publication number
CH377552A
CH377552A CH617261A CH617261A CH377552A CH 377552 A CH377552 A CH 377552A CH 617261 A CH617261 A CH 617261A CH 617261 A CH617261 A CH 617261A CH 377552 A CH377552 A CH 377552A
Authority
CH
Switzerland
Prior art keywords
light meter
photoelectric light
photoelectric
meter
light
Prior art date
Application number
CH617261A
Other languages
French (fr)
Inventor
Gwyn Stimson Allen
Original Assignee
Kodak 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 Kodak Sa filed Critical Kodak Sa
Publication of CH377552A publication Critical patent/CH377552A/en

Links

Classifications

    • 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
    • G03B7/18—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with light-reducing "factor" of filter or other obturator used with or on the lens of the camera
    • 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
    • G03B7/099—Arrangement of photoelectric elements in or on the camera
    • G03B7/0993—Arrangement of photoelectric elements in or on the camera in the camera

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
CH617261A 1960-05-27 1961-05-26 Photoelectric light meter CH377552A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3215660A 1960-05-27 1960-05-27

Publications (1)

Publication Number Publication Date
CH377552A true CH377552A (en) 1964-05-15

Family

ID=21863407

Family Applications (1)

Application Number Title Priority Date Filing Date
CH617261A CH377552A (en) 1960-05-27 1961-05-26 Photoelectric light meter

Country Status (2)

Country Link
CH (1) CH377552A (en)
GB (1) GB981869A (en)

Also Published As

Publication number Publication date
GB981869A (en) 1965-01-27

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