FR2126280B1 - - Google Patents
Info
- Publication number
- FR2126280B1 FR2126280B1 FR7205916A FR7205916A FR2126280B1 FR 2126280 B1 FR2126280 B1 FR 2126280B1 FR 7205916 A FR7205916 A FR 7205916A FR 7205916 A FR7205916 A FR 7205916A FR 2126280 B1 FR2126280 B1 FR 2126280B1
- Authority
- FR
- France
- 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
- 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
- G03B7/083—Analogue circuits for control of exposure time
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Exposure Control For Cameras (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP46008483A JPS5115736B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1971-02-22 | 1971-02-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2126280A1 FR2126280A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-10-06 |
| FR2126280B1 true FR2126280B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-06-11 |
Family
ID=11694340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7205916A Expired FR2126280B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1971-02-22 | 1972-02-22 |
Country Status (5)
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4970625A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1972-11-09 | 1974-07-09 | ||
| JPS4977628A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1972-11-29 | 1974-07-26 | ||
| US4095241A (en) * | 1973-04-11 | 1978-06-13 | Canon Kabushiki Kaisha | Photo-sensing circuit |
| JPS51134126A (en) * | 1975-05-16 | 1976-11-20 | Nippon Kogaku Kk <Nikon> | Light measure device for the camera |
| US4035634A (en) * | 1975-10-31 | 1977-07-12 | Fuji Shashin Koki Kabushiki Kaisha | Light receptor device |
| US4168125A (en) * | 1975-12-10 | 1979-09-18 | General Energy Development Corporation | Light sensing device |
| JPS5690226A (en) * | 1979-12-25 | 1981-07-22 | Olympus Optical Co Ltd | Photoelectric conversion circuit |
| JPS5756828A (en) * | 1980-09-22 | 1982-04-05 | Olympus Optical Co Ltd | Automatic exposure control camera |
| JPS5845523A (ja) * | 1981-09-11 | 1983-03-16 | Olympus Optical Co Ltd | 測光回路 |
| JPS5946521A (ja) * | 1982-09-08 | 1984-03-15 | Canon Inc | 測光回路 |
| DE3604971A1 (de) * | 1986-02-17 | 1987-08-20 | Messerschmitt Boelkow Blohm | Photosensoreinrichtung mit dunkelstromkompensation |
| US4973833A (en) * | 1988-09-28 | 1990-11-27 | Minolta Camera Kabushiki Kaisha | Image sensor including logarithmic converters |
| WO2005022194A2 (en) * | 2003-08-13 | 2005-03-10 | Lettvin Jonathan D | Imaging system |
| US7952626B2 (en) * | 2003-11-17 | 2011-05-31 | Lettvin Jonathan D | Geometric remapping with delay lines |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3232192A (en) * | 1963-02-20 | 1966-02-01 | Eastman Kodak Co | Photographic exposure measuring device |
| US3582220A (en) * | 1968-02-21 | 1971-06-01 | Asahi Optical Co Ltd | Light contrast meter for measuring the difference between maximum light intensity and immediately incident light intensity or other intensity |
| DE1942285A1 (de) * | 1969-08-20 | 1971-03-04 | Agfa Gevaert Ag | Fotografische Kamera mit einer elektronischen Belichtungssteuereinrichtung |
| JPS4726288U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1971-04-12 | 1972-11-24 |
-
1971
- 1971-02-22 JP JP46008483A patent/JPS5115736B1/ja active Pending
-
1972
- 1972-01-26 DE DE2203506A patent/DE2203506B2/de active Granted
- 1972-02-09 US US00224719A patent/US3781119A/en not_active Expired - Lifetime
- 1972-02-22 GB GB817372A patent/GB1361348A/en not_active Expired
- 1972-02-22 FR FR7205916A patent/FR2126280B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1361348A (en) | 1974-07-24 |
| JPS5115736B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-05-19 |
| FR2126280A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-10-06 |
| DE2203506C3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-10-24 |
| DE2203506A1 (de) | 1972-09-07 |
| DE2203506B2 (de) | 1974-03-14 |
| US3781119A (en) | 1973-12-25 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |