FR2420894A1 - Dispositif de commande de flash electronique - Google Patents
Dispositif de commande de flash electroniqueInfo
- Publication number
- FR2420894A1 FR2420894A1 FR7907384A FR7907384A FR2420894A1 FR 2420894 A1 FR2420894 A1 FR 2420894A1 FR 7907384 A FR7907384 A FR 7907384A FR 7907384 A FR7907384 A FR 7907384A FR 2420894 A1 FR2420894 A1 FR 2420894A1
- Authority
- FR
- France
- Prior art keywords
- control device
- allows
- autofocus
- battery
- exposure
- 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.)
- Granted
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
- G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
- G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
- G03B7/091—Digital circuits
-
- 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
- G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
- G03B3/10—Power-operated focusing
-
- 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
- G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
- G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
- G03B7/091—Digital circuits
- G03B7/093—Digital circuits for control of exposure time
-
- 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
- G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
- G03B7/16—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with both the intensity of the flash source and the distance of the flash source from the object, e.g. in accordance with the "guide number" of the flash bulb and the focusing of the camera
-
- 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
Abstract
Dispositif de flash électronique pour appareil de prise de vues avec agencement de mise au point automatique et de télémétrie sonore. Le dispositif de commande de charge empêche la charge du condensateur du tube flash pendant au moins l'opération automatique de mise au point et ne permet sa charge qu'à des moments autres qu'au cours de la télémétrie sonore pour éviter le rayonnement diffus de l'oscillateur. Un étage de validation ne permet l'exposition à l'éclairage flash que lorsque le condensateur est chargé convenablement Ledit dispositif de commande ne permet de prélèvement substantiel sur la pile qu'un par un, de sorte qu'une seule pile suffit pour toutes les opérations. Il permet en outre à un utilisateur d'appareil de prise de vues reflex à objectif unique de bénéficier d'un intervalle de visée entre la mise au point automatique et l'exposition.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/889,251 US4156565A (en) | 1978-03-23 | 1978-03-23 | Control system for flash-illuminated automatic focusing camera |
US05/917,477 US4162836A (en) | 1978-06-21 | 1978-06-21 | Electronic flash inhibit arrangement |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2420894A1 true FR2420894A1 (fr) | 1979-10-19 |
FR2420894B1 FR2420894B1 (fr) | 1984-08-10 |
Family
ID=27128908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7907384A Granted FR2420894A1 (fr) | 1978-03-23 | 1979-03-23 | Dispositif de commande de flash electronique |
Country Status (7)
Country | Link |
---|---|
AT (1) | AT365790B (fr) |
AU (1) | AU526851B2 (fr) |
CH (1) | CH646799A5 (fr) |
DE (1) | DE2911306B2 (fr) |
FR (1) | FR2420894A1 (fr) |
GB (1) | GB2017323B (fr) |
IT (1) | IT1192700B (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4473285A (en) * | 1981-11-27 | 1984-09-25 | W. Haking Enterprises Limited | Automatic focusing camera |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3522764A (en) * | 1968-03-25 | 1970-08-04 | Polaroid Corp | Rangefinding and focusing system for photographic cameras and the like |
US3846812A (en) * | 1973-12-20 | 1974-11-05 | Polaroid Corp | Automatic electronic flash camera |
US3917395A (en) * | 1973-06-28 | 1975-11-04 | Honeywell Inc | Control circuit for photographic apparatus |
US4074295A (en) * | 1976-04-23 | 1978-02-14 | Polaroid Corporation | Compact accessory strobe for cameras with battery enclosed film pack |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1908052C2 (de) * | 1969-02-18 | 1971-05-13 | Metz App Werke Inh Paul Metz | Elektronenblitzgeraet mit automatischer Lichtmengensteuerung |
-
1979
- 1979-03-20 CH CH262579A patent/CH646799A5/de not_active IP Right Cessation
- 1979-03-22 AU AU45341/79A patent/AU526851B2/en not_active Ceased
- 1979-03-22 DE DE2911306A patent/DE2911306B2/de not_active Withdrawn
- 1979-03-23 GB GB7910225A patent/GB2017323B/en not_active Expired
- 1979-03-23 FR FR7907384A patent/FR2420894A1/fr active Granted
- 1979-03-23 AT AT0219879A patent/AT365790B/de not_active IP Right Cessation
- 1979-03-23 IT IT21234/79A patent/IT1192700B/it active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3522764A (en) * | 1968-03-25 | 1970-08-04 | Polaroid Corp | Rangefinding and focusing system for photographic cameras and the like |
US3917395A (en) * | 1973-06-28 | 1975-11-04 | Honeywell Inc | Control circuit for photographic apparatus |
US3846812A (en) * | 1973-12-20 | 1974-11-05 | Polaroid Corp | Automatic electronic flash camera |
US4074295A (en) * | 1976-04-23 | 1978-02-14 | Polaroid Corporation | Compact accessory strobe for cameras with battery enclosed film pack |
Also Published As
Publication number | Publication date |
---|---|
IT7921234A0 (it) | 1979-03-23 |
AU4534179A (en) | 1979-09-27 |
AU526851B2 (en) | 1983-02-03 |
AT365790B (de) | 1982-02-10 |
GB2017323A (en) | 1979-10-03 |
DE2911306B2 (de) | 1981-02-12 |
DE2911306A1 (de) | 1979-10-04 |
ATA219879A (de) | 1981-06-15 |
GB2017323B (en) | 1982-09-08 |
IT1192700B (it) | 1988-05-04 |
CH646799A5 (de) | 1984-12-14 |
FR2420894B1 (fr) | 1984-08-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |