GB1499382A - Electronic flash unit - Google Patents

Electronic flash unit

Info

Publication number
GB1499382A
GB1499382A GB32297/75A GB3229775A GB1499382A GB 1499382 A GB1499382 A GB 1499382A GB 32297/75 A GB32297/75 A GB 32297/75A GB 3229775 A GB3229775 A GB 3229775A GB 1499382 A GB1499382 A GB 1499382A
Authority
GB
United Kingdom
Prior art keywords
capacitor
firing
tube
flash
circuit
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
GB32297/75A
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1499382A publication Critical patent/GB1499382A/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
    • 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
    • G03B2215/0514—Separate unit
    • 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
    • G03B2215/056—Connection with camera, e.g. adapter

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stroboscope Apparatuses (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
GB32297/75A 1974-08-01 1975-08-01 Electronic flash unit Expired GB1499382A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/493,573 US3969737A (en) 1974-08-01 1974-08-01 Electronic flash unit for cameras adapted to receive flashbulbs

Publications (1)

Publication Number Publication Date
GB1499382A true GB1499382A (en) 1978-02-01

Family

ID=23960796

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32297/75A Expired GB1499382A (en) 1974-08-01 1975-08-01 Electronic flash unit

Country Status (6)

Country Link
US (1) US3969737A (enExample)
CA (1) CA1058276A (enExample)
FR (1) FR2280916A1 (enExample)
GB (1) GB1499382A (enExample)
HK (1) HK45778A (enExample)
MY (1) MY7800355A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136225A (en) * 1983-02-15 1984-09-12 Olympus Optical Co Flashlight emission apparatus

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2513812B1 (de) * 1975-03-27 1976-09-30 Agfa Gevaert Ag Vorrichtung zum synchronen zuenden eines elektronenblitzgeraetes
JPS5223336A (en) * 1975-08-15 1977-02-22 Toshiba Corp Adapter
US4181416A (en) * 1975-10-14 1980-01-01 Canon Kabushiki Kaisha Data printer for a camera
IT1068879B (it) * 1975-10-23 1985-03-21 Itt Accessorio per il lampo elettronico di fotocamere
US4106037A (en) * 1975-12-27 1978-08-08 Canon Kabushiki Kaisha Flash device for use with a camera
USD250475S (en) 1976-09-07 1978-12-05 Canon Kabushiki Adjustable head electronic flash unit
USD255689S (en) 1977-11-04 1980-07-01 Rollei-Werke Frank & Heidecke Electronic flash unit
US4185905A (en) * 1978-04-03 1980-01-29 Polaroid Corporation Dual purpose flash/strobe socket assembly for a photographic camera
JPS5910719Y2 (ja) * 1978-04-28 1984-04-03 オリンパス光学工業株式会社 電子発光装置の電源装置
US4204140A (en) * 1979-02-12 1980-05-20 Eastman Kodak Company Safety circuit for electronic flash apparatus
US4369395A (en) * 1981-03-05 1983-01-18 Polaroid Corporation Electronic flash with safety switch feature
US20040245272A1 (en) * 2003-04-15 2004-12-09 Innovative Product Achievements, Inc. Compact dispenser with flexible door
JP6236746B2 (ja) * 2014-02-19 2017-11-29 リコーイメージング株式会社 電圧変換回路、ストロボ装置、撮影装置およびサージ電圧低減方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1246390B (de) * 1965-03-12 1967-08-03 Zeiss Ikon Ag Kamera mit ansetzbarem Blitzlichtgeraet
US3559548A (en) * 1967-06-19 1971-02-02 Perfect Film & Chem Corp Time-delay means for rechargeable stroboscopic flash attachment
US3559549A (en) * 1968-01-22 1971-02-02 Perfect Film & Chem Corp Rechargeable flash attachment
US3819983A (en) * 1970-09-08 1974-06-25 Polaroid Corp Photoflash power supply
DE2131057B2 (de) * 1971-06-23 1973-10-18 Braun Ag, 6000 Frankfurt Schaltsichere Lichtmengensteuerung in einem Elektronenblitzgerät
DE2152140C2 (de) * 1971-10-20 1973-11-29 Metz Apparatewerke, Inh. Paul Metz, 8510 Fuerth Elektronenblitzgerät mit auto matischer Lichtregelung
JPS5522771B2 (enExample) * 1972-03-08 1980-06-19
JPS525644Y2 (enExample) * 1972-08-28 1977-02-05

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136225A (en) * 1983-02-15 1984-09-12 Olympus Optical Co Flashlight emission apparatus

Also Published As

Publication number Publication date
US3969737A (en) 1976-07-13
FR2280916B1 (enExample) 1979-01-19
HK45778A (en) 1978-08-18
CA1058276A (en) 1979-07-10
FR2280916A1 (fr) 1976-02-27
MY7800355A (en) 1978-12-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee