CH361678A - Automatic exposure regulator for photo cameras - Google Patents

Automatic exposure regulator for photo cameras

Info

Publication number
CH361678A
CH361678A CH361678DA CH361678A CH 361678 A CH361678 A CH 361678A CH 361678D A CH361678D A CH 361678DA CH 361678 A CH361678 A CH 361678A
Authority
CH
Switzerland
Prior art keywords
automatic exposure
photo cameras
exposure regulator
regulator
cameras
Prior art date
Application number
Other languages
German (de)
Inventor
Delorimier Jr Mckinlay Harry
Original Assignee
Bell & Howell Co
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 Bell & Howell Co filed Critical Bell & Howell Co
Publication of CH361678A publication Critical patent/CH361678A/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
    • G03B7/081—Analogue circuits
    • G03B7/085—Analogue circuits for control of aperture

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Viewfinders (AREA)
CH361678D 1958-02-21 1958-05-16 Automatic exposure regulator for photo cameras CH361678A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US361678XA 1958-02-21 1958-02-21

Publications (1)

Publication Number Publication Date
CH361678A true CH361678A (en) 1962-04-30

Family

ID=21887028

Family Applications (1)

Application Number Title Priority Date Filing Date
CH361678D CH361678A (en) 1958-02-21 1958-05-16 Automatic exposure regulator for photo cameras

Country Status (2)

Country Link
CH (1) CH361678A (en)
GB (1) GB892923A (en)

Also Published As

Publication number Publication date
GB892923A (en) 1962-04-04

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