GB1374248A - Control systems - Google Patents

Control systems

Info

Publication number
GB1374248A
GB1374248A GB2016474A GB2016474A GB1374248A GB 1374248 A GB1374248 A GB 1374248A GB 2016474 A GB2016474 A GB 2016474A GB 2016474 A GB2016474 A GB 2016474A GB 1374248 A GB1374248 A GB 1374248A
Authority
GB
United Kingdom
Prior art keywords
flash
control
pulses
generated
photo
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
GB2016474A
Other languages
English (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.)
Ponder & Best
Original Assignee
Ponder & Best
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 Ponder & Best filed Critical Ponder & Best
Publication of GB1374248A publication Critical patent/GB1374248A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
    • H05B41/32—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp for single flash operation
    • H05B41/325—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp for single flash operation by measuring the incident light
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
    • H05B41/32—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp for single flash operation
    • 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)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Exposure Control For Cameras (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
GB2016474A 1970-08-24 1971-08-24 Control systems Expired GB1374248A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
BE93116 1970-08-24
BE94290 1970-09-23
BE100618 1971-03-08
BE102057 1971-04-09
BE104488 1971-06-11

Publications (1)

Publication Number Publication Date
GB1374248A true GB1374248A (en) 1974-11-20

Family

ID=27507527

Family Applications (5)

Application Number Title Priority Date Filing Date
GB2016374A Expired GB1374247A (enrdf_load_stackoverflow) 1970-08-24 1971-08-24
GB2022174A Expired GB1374249A (en) 1970-08-24 1971-08-24 Electronic photoflash
GB1991974A Expired GB1374246A (en) 1970-08-24 1971-08-24 Electric switch
GB3970471A Expired GB1374245A (en) 1970-08-24 1971-08-24 Electronic photoflash
GB2016474A Expired GB1374248A (en) 1970-08-24 1971-08-24 Control systems

Family Applications Before (4)

Application Number Title Priority Date Filing Date
GB2016374A Expired GB1374247A (enrdf_load_stackoverflow) 1970-08-24 1971-08-24
GB2022174A Expired GB1374249A (en) 1970-08-24 1971-08-24 Electronic photoflash
GB1991974A Expired GB1374246A (en) 1970-08-24 1971-08-24 Electric switch
GB3970471A Expired GB1374245A (en) 1970-08-24 1971-08-24 Electronic photoflash

Country Status (3)

Country Link
JP (11) JPS524933B1 (enrdf_load_stackoverflow)
DE (5) DE2142081B2 (enrdf_load_stackoverflow)
GB (5) GB1374247A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017849A1 (en) * 1979-04-06 1980-10-29 Olympus Optical Co., Ltd. Electronic flash apparatus

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2738984A1 (de) * 1977-08-30 1979-03-15 Rollei Werke Franke Heidecke Elektronenblitzgeraet fuer fotografische aufnahmezwecke
US4540265A (en) * 1983-01-24 1985-09-10 Eastman Kodak Company Energy-saving electronic flash apparatus
GB2134662B (en) * 1983-01-24 1986-02-05 Eastman Kodak Co Electronic flash apparatus
JPS63170484U (enrdf_load_stackoverflow) * 1987-04-23 1988-11-07
EP1083458A3 (en) * 1999-09-07 2005-07-27 Konica Corporation Lens-fitted film unit with strobe circuit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1907059B2 (de) * 1968-02-13 1973-04-19 Lumina SPRL, Brüssel Elektronenblitzgeraet
US3519879A (en) * 1968-07-25 1970-07-07 Honeywell Inc Flash apparatus with automatic light termination having gating and anticipation means
JPS5038616Y2 (enrdf_load_stackoverflow) * 1971-09-01 1975-11-07
JPS5149410A (ja) * 1974-10-25 1976-04-28 Hitachi Ltd Tatejikugatadendoki

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017849A1 (en) * 1979-04-06 1980-10-29 Olympus Optical Co., Ltd. Electronic flash apparatus
US4329623A (en) 1979-04-06 1982-05-11 Olympus Optical Co., Ltd. Electronic flash apparatus

Also Published As

Publication number Publication date
DE2166613B2 (de) 1975-10-30
JPS50112027A (enrdf_load_stackoverflow) 1975-09-03
GB1374246A (en) 1974-11-20
JPS50112025A (enrdf_load_stackoverflow) 1975-09-03
JPS50112030A (enrdf_load_stackoverflow) 1975-09-03
DE2142081A1 (de) 1972-04-13
GB1374249A (en) 1974-11-20
JPS50112028A (enrdf_load_stackoverflow) 1975-09-03
JPS544849B2 (enrdf_load_stackoverflow) 1979-03-10
JPS50112032A (enrdf_load_stackoverflow) 1975-09-03
DE2142081B2 (de) 1976-02-12
JPS54102119U (enrdf_load_stackoverflow) 1979-07-18
GB1374245A (en) 1974-11-20
DE2166612A1 (de) 1975-05-07
JPS50112031A (enrdf_load_stackoverflow) 1975-09-03
JPS50112029A (enrdf_load_stackoverflow) 1975-09-03
DE2166610A1 (de) 1974-11-14
JPS524933B1 (enrdf_load_stackoverflow) 1977-02-08
DE2166612B2 (de) 1975-12-04
DE2166611B2 (de) 1978-05-18
DE2166613A1 (de) 1975-05-07
DE2166611A1 (de) 1975-05-07
GB1374247A (enrdf_load_stackoverflow) 1974-11-20
JPS50111566A (enrdf_load_stackoverflow) 1975-09-02
JPS50112026A (enrdf_load_stackoverflow) 1975-09-03
JPS5427140B2 (enrdf_load_stackoverflow) 1979-09-07
JPS629890B2 (enrdf_load_stackoverflow) 1987-03-03
JPS5410099B2 (enrdf_load_stackoverflow) 1979-05-01

Similar Documents

Publication Publication Date Title
GB1225916A (enrdf_load_stackoverflow)
GB1117057A (en) Improvements in or relating to electronic flash apparatus for use in photography and to light responsive control circuits for use in such apparatus
GB1374248A (en) Control systems
GB1256280A (en) Automatic flash exposure control systems
GB1292053A (en) Photographic exposure control arrangement
GB1440599A (en) Flash system for a camera
GB1427165A (en) Automatic exposure control arrangement for a camera
GB1259148A (enrdf_load_stackoverflow)
GB1329584A (en) Single lens reflex camera having automatic exposure control system
JPS5443021A (en) F/stop digital value display device of cameras
GB1110884A (en) Photographic camera including a photoelectric timing circuit with electromagnetic means for effecting retardation of the shutter
GB1321628A (en) Exposure quantity control device for a camera
GB1326257A (en) Camera flash control system
GB1404830A (en) Automatic exposure control circuits
GB1159580A (en) Light Meter for High Powered Repetitive Light Flashes
GB1526834A (en) Exposure control device for a camera
SU463004A1 (ru) Цифровой пирометр
GB1313940A (en) Flame detector
GB1125781A (en) Improvements in or relating to photo-electric control systems
SU464782A1 (ru) Индикатор положени движущихс объектов
SU448392A1 (ru) Частотный компаратор
JPS5468236A (en) Shutter speed control circuit for industrial exposure device
SU123348A1 (ru) Двоичный счетчик импульсов на ферромагнитных элементах
JPS54130140A (en) Beam detector for laser recorder
JPS5734534A (en) Electric shutter device for camera

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee