CA1058276A - Electronic flash unit for cameras adapted to receive flashbulbs - Google Patents
Electronic flash unit for cameras adapted to receive flashbulbsInfo
- Publication number
- CA1058276A CA1058276A CA230,864A CA230864A CA1058276A CA 1058276 A CA1058276 A CA 1058276A CA 230864 A CA230864 A CA 230864A CA 1058276 A CA1058276 A CA 1058276A
- Authority
- CA
- Canada
- Prior art keywords
- flash
- firing
- trigger
- flashtube
- capacitor
- 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
Links
- 238000010304 firing Methods 0.000 claims abstract description 101
- 239000003990 capacitor Substances 0.000 claims abstract description 88
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 230000000977 initiatory effect Effects 0.000 claims description 11
- 238000009877 rendering Methods 0.000 claims description 10
- 230000004044 response Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 2
- 230000011664 signaling Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 5
- 238000010168 coupling process Methods 0.000 claims 5
- 238000005859 coupling reaction Methods 0.000 claims 5
- 230000006872 improvement Effects 0.000 claims 5
- 230000002459 sustained effect Effects 0.000 claims 5
- 238000004804 winding Methods 0.000 description 19
- 238000013459 approach Methods 0.000 description 3
- 230000001934 delay Effects 0.000 description 3
- 229910052724 xenon Inorganic materials 0.000 description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 229910052754 neon Inorganic materials 0.000 description 2
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000727 fraction Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- BALXUFOVQVENIU-KXNXZCPBSA-N pseudoephedrine hydrochloride Chemical compound [H+].[Cl-].CN[C@@H](C)[C@@H](O)C1=CC=CC=C1 BALXUFOVQVENIU-KXNXZCPBSA-N 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000002311 subsequent effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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)
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 |
|---|---|
| CA1058276A true CA1058276A (en) | 1979-07-10 |
Family
ID=23960796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA230,864A Expired CA1058276A (en) | 1974-08-01 | 1975-07-04 | Electronic flash unit for cameras adapted to receive flashbulbs |
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) |
Families Citing this family (14)
| 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 |
| US4628229A (en) * | 1983-02-15 | 1986-12-09 | Olympus Optical Company, Ltd | Flashlight emission apparatus |
| 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)
| 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 |
-
1974
- 1974-08-01 US US05/493,573 patent/US3969737A/en not_active Expired - Lifetime
-
1975
- 1975-07-04 CA CA230,864A patent/CA1058276A/en not_active Expired
- 1975-08-01 FR FR7524068A patent/FR2280916A1/fr active Granted
- 1975-08-01 GB GB32297/75A patent/GB1499382A/en not_active Expired
-
1978
- 1978-08-10 HK HK457/78A patent/HK45778A/xx unknown
- 1978-12-30 MY MY355/78A patent/MY7800355A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US3969737A (en) | 1976-07-13 |
| GB1499382A (en) | 1978-02-01 |
| FR2280916B1 (enExample) | 1979-01-19 |
| HK45778A (en) | 1978-08-18 |
| FR2280916A1 (fr) | 1976-02-27 |
| MY7800355A (en) | 1978-12-31 |
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