FR2316585B1 - - Google Patents
Info
- Publication number
- FR2316585B1 FR2316585B1 FR7620393A FR7620393A FR2316585B1 FR 2316585 B1 FR2316585 B1 FR 2316585B1 FR 7620393 A FR7620393 A FR 7620393A FR 7620393 A FR7620393 A FR 7620393A FR 2316585 B1 FR2316585 B1 FR 2316585B1
- 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
- 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
- G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
- G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
- G01J1/18—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors using comparison with a reference electric value
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Exposure Control For Cameras (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8144975A JPS525588A (en) | 1975-07-03 | 1975-07-03 | Light meter |
JP8961075A JPS5214472A (en) | 1975-07-24 | 1975-07-24 | Light measuring equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2316585A1 FR2316585A1 (fr) | 1977-01-28 |
FR2316585B1 true FR2316585B1 (US20110009641A1-20110113-C00256.png) | 1978-10-13 |
Family
ID=26422472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7620393A Granted FR2316585A1 (fr) | 1975-07-03 | 1976-07-02 | Dispositif de mesure pour appareil de prise de vues |
Country Status (4)
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2822035A1 (de) * | 1978-05-20 | 1979-11-22 | Leitz Ernst Gmbh | Schaltungsanordnung zur kompensation des temperaturkoeffizienten von halbleiterstrecken |
JPS5916812Y2 (ja) * | 1978-06-27 | 1984-05-17 | キヤノン株式会社 | カメラの測光回路 |
US4344024A (en) * | 1979-07-12 | 1982-08-10 | Agfa-Gevaert Ag | Digital control system for automatic-focus cameras |
JPS5659224A (en) * | 1979-10-20 | 1981-05-22 | Nippon Kogaku Kk <Nikon> | Camera having digital exposure value display device |
JPS587618A (ja) * | 1981-07-07 | 1983-01-17 | Canon Inc | 測光回路の温度補償方式 |
JP2585989B2 (ja) * | 1983-09-20 | 1997-02-26 | 株式会社ニコン | カメラの制御装置 |
DE3426588A1 (de) * | 1984-07-19 | 1986-01-30 | Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar | Verfahren zur temperaturkompensation bei der belichtungsmessung und schaltungsanordnung zur durchfuehrung des verfahrens |
US5272426A (en) * | 1991-03-18 | 1993-12-21 | James C. Cook | Control loop for motorized shutter operation |
JP4201808B2 (ja) * | 2006-11-08 | 2008-12-24 | シャープ株式会社 | 光電流検出回路ならびにそれを備えた光センサおよび電子機器 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3747487A (en) * | 1969-04-17 | 1973-07-24 | Canon Kk | An exposure control system for a photographic system |
JPS4923779B1 (US20110009641A1-20110113-C00256.png) * | 1970-07-03 | 1974-06-18 | ||
US3935524A (en) * | 1970-12-15 | 1976-01-27 | Karl Vockenhuber | Circuit arrangement for detecting voltage differences |
JPS5321112Y2 (US20110009641A1-20110113-C00256.png) * | 1971-09-07 | 1978-06-02 | ||
JPS5116291Y2 (US20110009641A1-20110113-C00256.png) * | 1971-11-30 | 1976-04-28 | ||
JPS5331803Y2 (US20110009641A1-20110113-C00256.png) * | 1972-07-10 | 1978-08-08 | ||
JPS581403B2 (ja) * | 1973-06-23 | 1983-01-11 | ミノルタ株式会社 | 光起電力素子を用いた自動露出時間制御回路 |
DE2461382C3 (de) * | 1973-12-25 | 1978-04-13 | Canon K.K., Tokio | Kamera mit temperaturkompensierter Belichtungssteuerung |
JPS5842415B2 (ja) * | 1974-03-08 | 1983-09-20 | ミノルタ株式会社 | カメラノロシユツジヨウホウエンザンカイロ |
-
1976
- 1976-06-29 US US05/700,849 patent/US4072962A/en not_active Expired - Lifetime
- 1976-07-01 GB GB27514/76A patent/GB1558262A/en not_active Expired
- 1976-07-02 FR FR7620393A patent/FR2316585A1/fr active Granted
- 1976-07-02 DE DE2629854A patent/DE2629854C3/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2629854B2 (de) | 1980-09-11 |
GB1558262A (en) | 1979-12-19 |
US4072962A (en) | 1978-02-07 |
DE2629854C3 (de) | 1981-09-10 |
DE2629854A1 (de) | 1977-01-20 |
FR2316585A1 (fr) | 1977-01-28 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |