FR2223720A1 - - Google Patents

Info

Publication number
FR2223720A1
FR2223720A1 FR7411484A FR7411484A FR2223720A1 FR 2223720 A1 FR2223720 A1 FR 2223720A1 FR 7411484 A FR7411484 A FR 7411484A FR 7411484 A FR7411484 A FR 7411484A FR 2223720 A1 FR2223720 A1 FR 2223720A1
Authority
FR
France
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.)
Granted
Application number
FR7411484A
Other languages
French (fr)
Other versions
FR2223720B1 (en
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.)
Canon Inc
Original Assignee
Canon Inc
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
Priority claimed from JP48036287A external-priority patent/JPS49123326A/ja
Priority claimed from JP48048672A external-priority patent/JPS50836A/ja
Priority claimed from JP48053296A external-priority patent/JPS503626A/ja
Priority claimed from JP5499973A external-priority patent/JPS507526A/ja
Priority claimed from JP5499773A external-priority patent/JPS507524A/ja
Priority claimed from JP5499873A external-priority patent/JPS507525A/ja
Priority claimed from JP5733273A external-priority patent/JPS509422A/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of FR2223720A1 publication Critical patent/FR2223720A1/fr
Application granted granted Critical
Publication of FR2223720B1 publication Critical patent/FR2223720B1/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
    • G03B19/00—Cameras
    • G03B19/02—Still-picture cameras
    • G03B19/12—Reflex cameras with single objective and a movable reflector or a partly-transmitting mirror
    • 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
    • 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
    • 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
    • G03B7/089—Analogue circuits for storage of exposure value in mirror reflex cameras
    • 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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/58—Means for varying duration of "open" period of shutter

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
FR7411484A 1973-03-30 1974-03-29 Expired FR2223720B1 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP48036287A JPS49123326A (en) 1973-03-30 1973-03-30
JP48048672A JPS50836A (en) 1973-04-28 1973-04-28
JP48053296A JPS503626A (en) 1973-05-14 1973-05-14
JP5499973A JPS507526A (en) 1973-05-17 1973-05-17
JP5499773A JPS507524A (en) 1973-05-17 1973-05-17
JP5499873A JPS507525A (en) 1973-05-17 1973-05-17
JP5733273A JPS509422A (en) 1973-05-22 1973-05-22

Publications (2)

Publication Number Publication Date
FR2223720A1 true FR2223720A1 (en) 1974-10-25
FR2223720B1 FR2223720B1 (en) 1977-10-21

Family

ID=27564424

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7411484A Expired FR2223720B1 (en) 1973-03-30 1974-03-29

Country Status (3)

Country Link
DE (1) DE2415615C2 (en)
FR (1) FR2223720B1 (en)
NL (1) NL180960C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS618414B2 (en) * 1973-07-17 1986-03-14 Minolta Camera Kk

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4923779B1 (en) * 1970-07-03 1974-06-18
JPS571813B1 (en) * 1971-05-31 1982-01-13
JPS5112107Y2 (en) * 1971-09-02 1976-04-01

Also Published As

Publication number Publication date
NL180960C (en) 1987-05-18
NL180960B (en) 1986-12-16
FR2223720B1 (en) 1977-10-21
DE2415615A1 (en) 1974-10-17
DE2415615C2 (en) 1983-12-01
NL7404331A (en) 1974-10-02

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