FR2254039A1 - - Google Patents

Info

Publication number
FR2254039A1
FR2254039A1 FR7439471A FR7439471A FR2254039A1 FR 2254039 A1 FR2254039 A1 FR 2254039A1 FR 7439471 A FR7439471 A FR 7439471A FR 7439471 A FR7439471 A FR 7439471A FR 2254039 A1 FR2254039 A1 FR 2254039A1
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
FR7439471A
Other languages
French (fr)
Other versions
FR2254039B1 (enrdf_load_stackoverflow
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
Publication of FR2254039A1 publication Critical patent/FR2254039A1/fr
Application granted granted Critical
Publication of FR2254039B1 publication Critical patent/FR2254039B1/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
    • 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
    • G03B7/091—Digital circuits
    • G03B7/093—Digital circuits for control of exposure time

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
FR7439471A 1973-12-05 1974-12-03 Expired FR2254039B1 (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13791773A JPS5087645A (enrdf_load_stackoverflow) 1973-12-05 1973-12-05

Publications (2)

Publication Number Publication Date
FR2254039A1 true FR2254039A1 (enrdf_load_stackoverflow) 1975-07-04
FR2254039B1 FR2254039B1 (enrdf_load_stackoverflow) 1977-10-28

Family

ID=15209692

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7439471A Expired FR2254039B1 (enrdf_load_stackoverflow) 1973-12-05 1974-12-03

Country Status (4)

Country Link
JP (1) JPS5087645A (enrdf_load_stackoverflow)
FR (1) FR2254039B1 (enrdf_load_stackoverflow)
GB (1) GB1471970A (enrdf_load_stackoverflow)
NL (1) NL157115B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2493544A1 (fr) * 1980-11-04 1982-05-07 Asahi Optical Co Ltd Dispositif de commande d'ouverture utilisant un signal de frequence d'un moyen producteur d'eclairs lumineux pour appareil de prise de vues

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5345233A (en) 1976-10-05 1978-04-22 Asahi Optical Co Ltd Device for manually setting digital electric control camera
KR100236641B1 (ko) * 1994-05-16 2000-01-15 유무성 카메라의 연속 휘도 측정장치 및 그 제어방법

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2493544A1 (fr) * 1980-11-04 1982-05-07 Asahi Optical Co Ltd Dispositif de commande d'ouverture utilisant un signal de frequence d'un moyen producteur d'eclairs lumineux pour appareil de prise de vues

Also Published As

Publication number Publication date
NL157115B (nl) 1978-06-15
NL7415735A (nl) 1975-06-09
JPS5087645A (enrdf_load_stackoverflow) 1975-07-14
DE2457306A1 (de) 1975-06-12
FR2254039B1 (enrdf_load_stackoverflow) 1977-10-28
GB1471970A (en) 1977-04-27
DE2457306B2 (de) 1977-01-13

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Legal Events

Date Code Title Description
ST Notification of lapse