CA953351A - Computer flash with remote sensor and two-wire control of flash firing and quench - Google Patents
Computer flash with remote sensor and two-wire control of flash firing and quenchInfo
- Publication number
- CA953351A CA953351A CA131,649A CA131649A CA953351A CA 953351 A CA953351 A CA 953351A CA 131649 A CA131649 A CA 131649A CA 953351 A CA953351 A CA 953351A
- Authority
- CA
- Canada
- Prior art keywords
- flash
- quench
- remote sensor
- wire control
- computer
- 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
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
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 |
---|---|---|---|
US10887871A | 1971-01-22 | 1971-01-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA953351A true CA953351A (en) | 1974-08-20 |
Family
ID=22324589
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA131,649A Expired CA953351A (en) | 1971-01-22 | 1972-01-04 | Computer flash with remote sensor and two-wire control of flash firing and quench |
Country Status (3)
Country | Link |
---|---|
US (1) | US3737721A (en) |
CA (1) | CA953351A (en) |
DE (1) | DE2202750C3 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52156618A (en) * | 1976-06-23 | 1977-12-27 | Nippon Chemical Ind | Flash camera controller |
JPS5489629A (en) * | 1977-12-26 | 1979-07-16 | Olympus Optical Co Ltd | Adapter for auto strobe device |
US4150891A (en) * | 1978-02-02 | 1979-04-24 | Eastman Kodak Company | Exposure control apparatus including rate responsive lag compensation |
US4255030A (en) * | 1979-09-13 | 1981-03-10 | Polaroid Corporation | Camera with proportional fill flash quench strobe |
US4272188A (en) * | 1979-09-19 | 1981-06-09 | Xerox Corporation | Exposure compensation circuit for a copier |
US4656366A (en) * | 1979-12-28 | 1987-04-07 | American Telephone And Telegraph Company At&T Bell Laboratories | Control circuitry using two branch circuits for high voltage solid-state switches |
US4250409A (en) * | 1979-12-28 | 1981-02-10 | Bell Telephone Laboratories, Incorporated | Control circuitry using a pull-down transistor for high voltage field terminated diode solid-state switches |
US4333718A (en) * | 1980-01-16 | 1982-06-08 | Rollei Of America, Inc. | Photographic flash control circuitry having selectively operable internal sensor |
JPS5745837A (en) * | 1980-09-03 | 1982-03-16 | Olympus Optical Co | Photographing apparatus of endoscope |
EP1624734A3 (en) * | 2001-05-02 | 2006-06-07 | Fuji Photo Film Co., Ltd. | Flash device |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE973335C (en) * | 1954-02-19 | 1960-01-28 | Transformatoren Und App Fabrik | Circuit arrangement for electronic flash units with at least two flashing lights |
US3122677A (en) * | 1961-01-12 | 1964-02-25 | American Speedlight Corp | Electric flash producing system having shunting means to terminate flash at desired instant |
US3350603A (en) * | 1964-08-31 | 1967-10-31 | Honeywell Inc | Electronic flash with automatic termination means |
US3340426A (en) * | 1965-05-04 | 1967-09-05 | Honeywell Inc | Control system for terminating the discharge through a flash lamp |
US3350604A (en) * | 1965-06-01 | 1967-10-31 | Honeywell Inc | Flash lamp controlled by photosensitive light integrating device |
US3474443A (en) * | 1966-03-30 | 1969-10-21 | Monsanto Co | Alarm first-out circuitry |
US3568582A (en) * | 1967-09-27 | 1971-03-09 | Konishiroku Photo Ind | Electronic shutter |
US3566132A (en) * | 1967-12-26 | 1971-02-23 | Gen Electric | Beginning-of-tape and end-of-tape sensor |
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 |
US3517255A (en) * | 1968-07-25 | 1970-06-23 | Honeywell Inc | Flash apparatus with automatic light termination using light activated silicon controlled rectifier |
DE1928157A1 (en) * | 1969-06-03 | 1970-12-10 | Loewe Opta Gmbh | Circuit arrangement for electronic flash units with useful flash duration regulated as a function of the amount of reflected light |
US3638543A (en) * | 1970-07-17 | 1972-02-01 | Olympus Optical Co | Automatic exposure system for photographic camera |
-
1971
- 1971-01-22 US US3737721D patent/US3737721A/en not_active Expired - Lifetime
-
1972
- 1972-01-04 CA CA131,649A patent/CA953351A/en not_active Expired
- 1972-01-21 DE DE2202750A patent/DE2202750C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3737721A (en) | 1973-06-05 |
DE2202750A1 (en) | 1972-08-03 |
DE2202750B2 (en) | 1980-07-24 |
DE2202750C3 (en) | 1984-09-20 |
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