FR2420894A1 - Dispositif de commande de flash electronique - Google Patents

Dispositif de commande de flash electronique

Info

Publication number
FR2420894A1
FR2420894A1 FR7907384A FR7907384A FR2420894A1 FR 2420894 A1 FR2420894 A1 FR 2420894A1 FR 7907384 A FR7907384 A FR 7907384A FR 7907384 A FR7907384 A FR 7907384A FR 2420894 A1 FR2420894 A1 FR 2420894A1
Authority
FR
France
Prior art keywords
control device
allows
autofocus
battery
exposure
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.)
Granted
Application number
FR7907384A
Other languages
English (en)
French (fr)
Other versions
FR2420894B1 (enExample
Inventor
George C Harrison
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.)
Polaroid Corp
Original Assignee
Polaroid Corp
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 US05/889,251 external-priority patent/US4156565A/en
Priority claimed from US05/917,477 external-priority patent/US4162836A/en
Application filed by Polaroid Corp filed Critical Polaroid Corp
Publication of FR2420894A1 publication Critical patent/FR2420894A1/fr
Application granted granted Critical
Publication of FR2420894B1 publication Critical patent/FR2420894B1/fr
Granted 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
    • 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
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10—Power-operated focusing
    • 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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
    • 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
    • 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
    • G03B7/16—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with both the intensity of the flash source and the distance of the flash source from the object, e.g. in accordance with the "guide number" of the flash bulb and the focusing 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
    • G03B2215/00—Special procedures for taking photographs; Apparatus therefor
    • G03B2215/05—Combinations of cameras with electronic flash units

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stroboscope Apparatuses (AREA)
  • Automatic Focus Adjustment (AREA)
FR7907384A 1978-03-23 1979-03-23 Dispositif de commande de flash electronique Granted FR2420894A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/889,251 US4156565A (en) 1978-03-23 1978-03-23 Control system for flash-illuminated automatic focusing camera
US05/917,477 US4162836A (en) 1978-06-21 1978-06-21 Electronic flash inhibit arrangement

Publications (2)

Publication Number Publication Date
FR2420894A1 true FR2420894A1 (fr) 1979-10-19
FR2420894B1 FR2420894B1 (enExample) 1984-08-10

Family

ID=27128908

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7907384A Granted FR2420894A1 (fr) 1978-03-23 1979-03-23 Dispositif de commande de flash electronique

Country Status (7)

Country Link
AT (1) AT365790B (enExample)
AU (1) AU526851B2 (enExample)
CH (1) CH646799A5 (enExample)
DE (1) DE2911306B2 (enExample)
FR (1) FR2420894A1 (enExample)
GB (1) GB2017323B (enExample)
IT (1) IT1192700B (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4473285A (en) * 1981-11-27 1984-09-25 W. Haking Enterprises Limited Automatic focusing camera

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522764A (en) * 1968-03-25 1970-08-04 Polaroid Corp Rangefinding and focusing system for photographic cameras and the like
US3846812A (en) * 1973-12-20 1974-11-05 Polaroid Corp Automatic electronic flash camera
US3917395A (en) * 1973-06-28 1975-11-04 Honeywell Inc Control circuit for photographic apparatus
US4074295A (en) * 1976-04-23 1978-02-14 Polaroid Corporation Compact accessory strobe for cameras with battery enclosed film pack

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1908052C2 (de) * 1969-02-18 1971-05-13 Metz App Werke Inh Paul Metz Elektronenblitzgeraet mit automatischer Lichtmengensteuerung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522764A (en) * 1968-03-25 1970-08-04 Polaroid Corp Rangefinding and focusing system for photographic cameras and the like
US3917395A (en) * 1973-06-28 1975-11-04 Honeywell Inc Control circuit for photographic apparatus
US3846812A (en) * 1973-12-20 1974-11-05 Polaroid Corp Automatic electronic flash camera
US4074295A (en) * 1976-04-23 1978-02-14 Polaroid Corporation Compact accessory strobe for cameras with battery enclosed film pack

Also Published As

Publication number Publication date
IT7921234A0 (it) 1979-03-23
DE2911306B2 (de) 1981-02-12
GB2017323B (en) 1982-09-08
DE2911306A1 (de) 1979-10-04
AT365790B (de) 1982-02-10
FR2420894B1 (enExample) 1984-08-10
ATA219879A (de) 1981-06-15
AU526851B2 (en) 1983-02-03
AU4534179A (en) 1979-09-27
GB2017323A (en) 1979-10-03
IT1192700B (it) 1988-05-04
CH646799A5 (de) 1984-12-14

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Legal Events

Date Code Title Description
ST Notification of lapse