FR2199409A5 - - Google Patents

Info

Publication number
FR2199409A5
FR2199409A5 FR7332443A FR7332443A FR2199409A5 FR 2199409 A5 FR2199409 A5 FR 2199409A5 FR 7332443 A FR7332443 A FR 7332443A FR 7332443 A FR7332443 A FR 7332443A FR 2199409 A5 FR2199409 A5 FR 2199409A5
Authority
FR
France
Prior art keywords
voltage
proportional
exposure
base
shutter
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
FR7332443A
Other languages
English (en)
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo Co Ltd
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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Application granted granted Critical
Publication of FR2199409A5 publication Critical patent/FR2199409A5/fr
Expired legal-status Critical Current

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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/18—Signals indicating condition of a camera member or suitability of light
    • G03B17/20—Signals indicating condition of a camera member or suitability of light visible in viewfinder
    • 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
    • G03B7/003—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly setting of both shutter and diaphragm
    • 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)
  • Exposure Control For Cameras (AREA)
  • Indication In Cameras, And Counting Of Exposures (AREA)
  • Shutter-Related Mechanisms (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
FR7332443A 1972-09-11 1973-09-10 Expired FR2199409A5 (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9103072A JPS5340337B2 (enrdf_load_stackoverflow) 1972-09-11 1972-09-11

Publications (1)

Publication Number Publication Date
FR2199409A5 true FR2199409A5 (enrdf_load_stackoverflow) 1974-04-05

Family

ID=14015110

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7332443A Expired FR2199409A5 (enrdf_load_stackoverflow) 1972-09-11 1973-09-10

Country Status (3)

Country Link
JP (1) JPS5340337B2 (enrdf_load_stackoverflow)
FR (1) FR2199409A5 (enrdf_load_stackoverflow)
GB (1) GB1401117A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5137628A (enrdf_load_stackoverflow) * 1974-09-26 1976-03-30 Canon Kk

Also Published As

Publication number Publication date
JPS4949627A (enrdf_load_stackoverflow) 1974-05-14
JPS5340337B2 (enrdf_load_stackoverflow) 1978-10-26
DE2345343B2 (de) 1976-01-02
GB1401117A (en) 1975-07-16
DE2345343A1 (de) 1974-03-28

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Legal Events

Date Code Title Description
ST Notification of lapse