BE693570A - - Google Patents
Info
- Publication number
- BE693570A BE693570A BE693570DA BE693570A BE 693570 A BE693570 A BE 693570A BE 693570D A BE693570D A BE 693570DA BE 693570 A BE693570 A BE 693570A
- Authority
- BE
- Belgium
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
- G03B7/081—Analogue circuits
- G03B7/085—Analogue circuits for control of aperture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Diaphragms For Cameras (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US52717166A | 1966-02-14 | 1966-02-14 | |
| US57344166A | 1966-07-28 | 1966-07-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE693570A true BE693570A (en) | 1967-07-17 |
Family
ID=27062348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE693570D BE693570A (en) | 1966-02-14 | 1967-02-02 |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | AT293861B (en) |
| BE (1) | BE693570A (en) |
| CH (1) | CH453066A (en) |
| GB (1) | GB1139286A (en) |
| SE (1) | SE324506B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4297011A (en) | 1979-05-10 | 1981-10-27 | Rollei Of America, Inc. | Photoflash device |
-
1967
- 1967-02-02 BE BE693570D patent/BE693570A/xx unknown
- 1967-02-09 GB GB635367A patent/GB1139286A/en not_active Expired
- 1967-02-14 SE SE2036/67A patent/SE324506B/xx unknown
- 1967-02-14 AT AT143167A patent/AT293861B/en not_active IP Right Cessation
- 1967-02-14 CH CH211867A patent/CH453066A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1139286A (en) | 1969-01-08 |
| AT293861B (en) | 1971-10-25 |
| CH453066A (en) | 1968-05-31 |
| SE324506B (en) | 1970-06-01 |