GB824141A - Improvements in or relating to photographic cameras - Google Patents
Improvements in or relating to photographic camerasInfo
- Publication number
- GB824141A GB824141A GB2225457A GB2225457A GB824141A GB 824141 A GB824141 A GB 824141A GB 2225457 A GB2225457 A GB 2225457A GB 2225457 A GB2225457 A GB 2225457A GB 824141 A GB824141 A GB 824141A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shutter
- camera
- relay
- photocell
- energize
- 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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/58—Means for varying duration of "open" period of shutter
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
824,141. Photographic cameras. THOMPSON, W. H. G. Oct. 3, 1958, No. 22254/57. Class 98(1) [Also in Group XL(b)] A camera. includes a photocell in a tubular housing so that, on taking a self portrait, the operator may locate himself with respect to. the camera by shining a light towards it. The photocell is arranged to receive only light coming from in or near the optical axis of the camera objective and to initiate the release of the shutter. Preferably, a photovoltaic cell operates a relay to energize a battery operated electro-magnetic shutter release device and sound a buzzer. The shutter may be operated on a delayed action self-timer or a time delay relay may be used to energize the device and a separate relay be provided to operate the buzzer until the shutter has been released.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2225457A GB824141A (en) | 1958-10-03 | 1958-10-03 | Improvements in or relating to photographic cameras |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2225457A GB824141A (en) | 1958-10-03 | 1958-10-03 | Improvements in or relating to photographic cameras |
Publications (1)
Publication Number | Publication Date |
---|---|
GB824141A true GB824141A (en) | 1959-11-25 |
Family
ID=10176395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2225457A Expired GB824141A (en) | 1958-10-03 | 1958-10-03 | Improvements in or relating to photographic cameras |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB824141A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2641620A1 (en) * | 1989-01-11 | 1990-07-13 | Asahi Optical Co Ltd | DEVICE FOR REMOTE CONTROL OF A PHOTOGRAPHIC APPARATUS |
GB2242989A (en) * | 1990-03-14 | 1991-10-16 | Seikosha Kk | Remote control systems for a camera |
FR2662272A1 (en) * | 1990-05-16 | 1991-11-22 | Asahi Optical Co Ltd | REMOTE CAMERA CONTROL DEVICE. |
GB2260418A (en) * | 1991-10-09 | 1993-04-14 | Asahi Optical Co Ltd | Remote control camera |
US5255038A (en) * | 1989-01-11 | 1993-10-19 | Asahi Kogaku Kogyo Kabushiki Kaisha | Remote control apparatus of camera |
-
1958
- 1958-10-03 GB GB2225457A patent/GB824141A/en not_active Expired
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2641620A1 (en) * | 1989-01-11 | 1990-07-13 | Asahi Optical Co Ltd | DEVICE FOR REMOTE CONTROL OF A PHOTOGRAPHIC APPARATUS |
GB2227099A (en) * | 1989-01-11 | 1990-07-18 | Asahi Optical Co Ltd | Remote control apparatus of camera associated with its viewfinder |
GB2227099B (en) * | 1989-01-11 | 1993-03-10 | Asahi Optical Co Ltd | Remote control apparatus of camera |
US5255038A (en) * | 1989-01-11 | 1993-10-19 | Asahi Kogaku Kogyo Kabushiki Kaisha | Remote control apparatus of camera |
GB2242989A (en) * | 1990-03-14 | 1991-10-16 | Seikosha Kk | Remote control systems for a camera |
GB2242989B (en) * | 1990-03-14 | 1994-04-20 | Seikosha Kk | Remote control systems for a camera |
FR2662272A1 (en) * | 1990-05-16 | 1991-11-22 | Asahi Optical Co Ltd | REMOTE CAMERA CONTROL DEVICE. |
US5664233A (en) * | 1990-05-16 | 1997-09-02 | Asahi Kogaku Kogyo Kabushiki Kaisha | Remote control apparatus of camera |
GB2260418A (en) * | 1991-10-09 | 1993-04-14 | Asahi Optical Co Ltd | Remote control camera |
GB2260418B (en) * | 1991-10-09 | 1995-05-24 | Asahi Optical Co Ltd | Remote control camera |
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