GB1267234A - - Google Patents

Info

Publication number
GB1267234A
GB1267234A GB1267234DA GB1267234A GB 1267234 A GB1267234 A GB 1267234A GB 1267234D A GB1267234D A GB 1267234DA GB 1267234 A GB1267234 A GB 1267234A
Authority
GB
United Kingdom
Prior art keywords
tube
photo
light
electronic switch
detector
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
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 filed Critical
Publication of GB1267234A publication Critical patent/GB1267234A/en
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
    • 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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; 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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
    • G03B15/0452—Electrical ignition means connected to the shutter
    • 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
    • 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
    • H05B41/34—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp to provide a sequence of flashes
    • 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
    • G03B2215/0514—Separate unit
    • G03B2215/0517—Housing
    • G03B2215/0525—Reflector
    • G03B2215/0528—Reflector movable reflector, e.g. change of illumination angle or illumination direction

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Stroboscope Apparatuses (AREA)
  • Discharge Lamp (AREA)
  • Lasers (AREA)

Abstract

1,267,234. Photo-electric illumination control. LUMINA S.P.R.L. Feb.13, 1969 [Feb. 13, 1968; Nov.21, 1968; Dec.27, 1968; Jan.20, 1969], No.7937/69. Heading G1A. In a lighting system the light from a discharge tube 102, Fig. 1, which is energized by a capacitor 100, is extinguished by an electronic switch 103 actuated in response to the output from a detector 104 and integrator 105 which generate a signal when a predetermined amount of light has been received. The electronic switch may alternatively shunt the tube, and, when the source is a photographic flash-gun, the detector may respond to light reflected from the subject. The source may be a gas tube fixed by a condenser discharge, or a laser, and the switching element may be a semiconductor such as a thyristor, a thyratron, or for shunting purposes, a cold-electrode gas-filled arrestor tube. The flash-gun arrangement may be combined with and actuated by a camera, and may include electrical or mechano-optical means for varying the sensitivity of the detector in respect of the quantity of light effecting operation. The electronic switch may include a visual monitoring device by means of which light from the electronic switch is led to the outside of the casing by a fibre optic. Various transistor switching circuits are described some including an induction coil to prevent the build up of voltage across the flash-tube after switch off in order to allow for the tube to de-ionize, and the photo-sensitive cells may be photo-resistive, photo-voltaic, or photo-diodes or transistors.
GB1267234D 1968-02-13 1969-02-13 Expired GB1267234A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
BE54471 1968-02-13
BE66425 1968-11-21
BE68017 1968-12-27
BE68982 1969-01-20

Publications (1)

Publication Number Publication Date
GB1267234A true GB1267234A (en) 1972-03-15

Family

ID=27424583

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1267234D Expired GB1267234A (en) 1968-02-13 1969-02-13

Country Status (5)

Country Link
US (2) US3857064A (en)
JP (3) JPS5123907B1 (en)
DE (3) DE1966984A1 (en)
FR (1) FR2001833A1 (en)
GB (1) GB1267234A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS557800A (en) * 1979-07-05 1980-01-19 Canon Inc Dimming type flash device

Families Citing this family (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878429A (en) * 1968-11-14 1975-04-15 Hiroshi Iwata Electronic flash device with automatic light control
US3947720A (en) * 1969-03-08 1976-03-30 Loewe-Opta Gmbh Pulsed flash tube regulator using thyristor gate control
GB1320644A (en) * 1970-04-27 1973-06-20 West Electric Co Electronic flash device for photography
DE2142081B2 (en) * 1970-08-24 1976-02-12 Ponder & Best, Inc., Los Angeles, Cahf. (V.StA.) ELECTRON FLASH DEVICE
US3946269A (en) * 1971-05-25 1976-03-23 Itsuki Ban Electronic flash system
US3878433A (en) * 1971-11-17 1975-04-15 Sato Koki Kk Photographic flashlight apparatus with improved automatic light termination means
US3769888A (en) * 1971-12-06 1973-11-06 Honeywell Inc Computer flash light sensing apparatus
US3730064A (en) * 1971-12-06 1973-05-01 Honeywell Inc Quench control calculator
JPS4890228A (en) * 1972-02-28 1973-11-24
BE795223A (en) * 1972-02-12 1973-05-29 Braun Ag ELECTRONIC LIGHTING DEVICE WITH AUTOMATIC CONTROL OF THE LIGHT QUANTITY
JPS5729686B2 (en) * 1972-05-10 1982-06-24
JPS4927223A (en) * 1972-07-03 1974-03-11
JPS49101743U (en) * 1972-12-22 1974-09-02
DE2305046C3 (en) * 1973-02-02 1978-12-07 Rollei-Werke Franke & Heidecke, 3300 Braunschweig Control circuit for the automatic limitation of the flash duration of electronic flash units
US3864600A (en) * 1973-02-02 1975-02-04 Rollei Werke Franke Heidecke Electronic flash apparatus
JPS49120230U (en) * 1973-02-08 1974-10-15
JPS49148052U (en) * 1973-04-19 1974-12-20
JPS50129219A (en) * 1974-04-01 1975-10-13
JPS50129224A (en) * 1974-04-01 1975-10-13
JPS50123334U (en) * 1974-04-23 1975-10-08
JPS589932B2 (en) * 1974-12-21 1983-02-23 アサヒコウガクコウギヨウ カブシキガイシヤ Senkou Hatsu Kokini Okeru Shuu Hasu Sentaku Kugatachi You Kousouchi
JPS5135324A (en) * 1974-09-20 1976-03-25 Canon Kk
JPS5144924U (en) * 1974-09-30 1976-04-02
JPS5167738U (en) * 1974-11-22 1976-05-28
US3976914A (en) * 1975-05-27 1976-08-24 Honeywell Inc. Series SCR gate hold-on circuit
JPS527725A (en) * 1975-07-08 1977-01-21 Konishiroku Photo Ind Co Ltd Coupling an automatic light adjustable strobo to the camera
JPS5289320A (en) * 1976-01-20 1977-07-26 West Electric Co Automatic electronic flash unit
JPS5288334A (en) * 1976-01-20 1977-07-23 West Electric Co Electronic flash unit
DE2608652C2 (en) * 1976-03-03 1983-08-25 Robert Bosch Gmbh, 7000 Stuttgart Circuit arrangement for light quantity-controlled electronic flash units
DE2625845C3 (en) * 1976-06-09 1978-11-09 Siemens Ag, 1000 Berlin Und 8000 Muenchen Ignition circuit for quench tubes in electronic flash units
JPS52170539U (en) * 1976-06-18 1977-12-24
US4230402A (en) * 1976-11-30 1980-10-28 Canon Kabushiki Kaisha Flash exposure control system
JPS6220833Y2 (en) * 1977-03-31 1987-05-27
JPS53134927U (en) * 1977-03-31 1978-10-25
JPS53135329A (en) * 1977-04-28 1978-11-25 Sato Koki Kk Strobe system
JPS53135330A (en) * 1977-04-30 1978-11-25 West Electric Co Guide number changer
JPS5411724A (en) * 1977-06-28 1979-01-29 West Electric Co Exposure controlling device
JPS5421070A (en) * 1977-07-18 1979-02-16 West Electric Co Electronic flashing device
JPS5446550A (en) * 1977-09-20 1979-04-12 West Electric Co Light quantity correcting apparatus of automatic light adjusting strobo apparatus
JPS5459347U (en) * 1977-10-03 1979-04-24
JPS5476227A (en) * 1977-11-30 1979-06-18 West Electric Co Arithmetic dial device for photographic flashing device
JPS5492220A (en) * 1977-12-29 1979-07-21 West Electric Co Flash camera
JPS53145841U (en) * 1978-02-14 1978-11-16
US4254355A (en) * 1978-09-11 1981-03-03 General Electric Company Ceramic arc tube mounting
US4279254A (en) * 1978-10-30 1981-07-21 Paul B. Elder Company Ultraviolet light control
JPS5511297A (en) * 1979-07-05 1980-01-26 Canon Inc Aperture information input device
JPS5511290A (en) * 1979-07-05 1980-01-26 Canon Inc Exposure value display device
JPS5512998A (en) * 1979-07-05 1980-01-29 Canon Inc Exposure control system in camera
JPS5511289A (en) * 1979-07-05 1980-01-26 Canon Inc Exposure value display device
JPS5536894A (en) * 1979-07-05 1980-03-14 Canon Inc Dimmer type flash device
JPS5511293A (en) * 1979-07-05 1980-01-26 Canon Inc Exposure value control circuit
JPS5511291A (en) * 1979-07-05 1980-01-26 Canon Inc Camera system
JPS5511294A (en) * 1979-07-05 1980-01-26 Canon Inc Exposure control device in camera
JPS5511292A (en) * 1979-07-05 1980-01-26 Canon Inc Exposure value control circuit
JPS5511296A (en) * 1979-07-05 1980-01-26 Canon Inc Exposure value display device
JPS5512999A (en) * 1979-07-05 1980-01-29 Canon Inc Light adjusting flash device
JPS5623927U (en) * 1979-07-31 1981-03-04
JPS5584614U (en) * 1979-11-22 1980-06-11
JPS5597727U (en) * 1980-01-17 1980-07-07
US4330737A (en) * 1980-01-21 1982-05-18 Vivitar Corporation Electronic flash system
JPS5713533Y2 (en) * 1980-07-17 1982-03-18
JPS5658636U (en) * 1980-10-15 1981-05-20
US4470684A (en) * 1983-04-11 1984-09-11 Eastman Kodak Company Energy efficient charging apparatus for an electronic flash
KR20020024552A (en) * 2000-09-25 2002-03-30 무네유키 가코우 Flash device, lens-fitted photo film unit, camera, and producing method for the same
JP2002328416A (en) 2001-05-02 2002-11-15 Fuji Photo Film Co Ltd Electronic flash equipment
US7829831B2 (en) * 2008-09-05 2010-11-09 Sony Ericsson Mobile Communications Ab Control of output voltage provided to a flash unit
JP4914417B2 (en) * 2008-10-15 2012-04-11 株式会社エヌ・ピー・シー Solar simulator
US8653737B2 (en) * 2009-04-14 2014-02-18 Phoseon Technology, Inc. Controller for semiconductor lighting device
JP5220723B2 (en) * 2009-12-28 2013-06-26 株式会社エヌ・ピー・シー Solar simulator
DE102013112553A1 (en) * 2013-11-14 2015-06-03 Odos Imaging Ltd. Lighting device and method for illuminating an object

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1089482B (en) * 1959-08-21 1960-09-22 Siemens Ag Process for the production of a gas-filled pump stemless discharge vessel
US3122677A (en) * 1961-01-12 1964-02-25 American Speedlight Corp Electric flash producing system having shunting means to terminate flash at desired instant
GB1085032A (en) * 1964-09-11 1967-09-27 English Electric Co Ltd Improvements in or relating to protective spark gap devices
US3525033A (en) * 1965-02-18 1970-08-18 Sol Greenberg Regulated power supply utilizing a gate turn off switch
US3591829A (en) * 1967-04-20 1971-07-06 Minolta Camera Kk Automatic control device for electronic flash
US3585442A (en) * 1968-02-07 1971-06-15 Rollei Werke Franke Heidecke Flashlamp circuit having automatic light termination means
DE1764204B1 (en) * 1968-04-23 1972-01-05 Bosch Photokino Gmbh ELECTRONIC BLOCKING UNIT
US3519879A (en) * 1968-07-25 1970-07-07 Honeywell Inc Flash apparatus with automatic light termination having gating and anticipation means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS557800A (en) * 1979-07-05 1980-01-19 Canon Inc Dimming type flash device

Also Published As

Publication number Publication date
FR2001833A1 (en) 1969-10-03
DE1966983A1 (en) 1976-02-19
DE1907059A1 (en) 1969-10-02
DE1907059B2 (en) 1973-04-19
JPS5223260B1 (en) 1977-06-23
US3857064A (en) 1974-12-24
DE1966984A1 (en) 1976-03-25
JPS5633821B1 (en) 1981-08-06
JPS5123907B1 (en) 1976-07-20
US3818266A (en) 1974-06-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
49R Reference inserted (sect. 9/1949)
PLE Entries relating assignments, transmissions, licences in the register of patents
429A Application made for amendment of specification (sect. 29/1949)
429H Application (made) for amendment of specification now open to opposition (sect. 29/1949)
429D Case decided by the comptroller ** specification amended (sect. 29/1949)
SPA Amended specification published
PE20 Patent expired after termination of 20 years