DE69321809T2 - Lichtmengensteuervorrichtung - Google Patents
LichtmengensteuervorrichtungInfo
- Publication number
- DE69321809T2 DE69321809T2 DE69321809T DE69321809T DE69321809T2 DE 69321809 T2 DE69321809 T2 DE 69321809T2 DE 69321809 T DE69321809 T DE 69321809T DE 69321809 T DE69321809 T DE 69321809T DE 69321809 T2 DE69321809 T2 DE 69321809T2
- Authority
- DE
- Germany
- Prior art keywords
- control device
- light quantity
- quantity control
- light
- control
- 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 - Lifetime
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
- G03B9/60—Means for varying duration of "open" period of shutter by varying speed of movement of obturating members
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/75—Circuitry for compensating brightness variation in the scene by influencing optical camera components
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Diaphragms For Cameras (AREA)
- Facsimile Scanning Arrangements (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4329548A JP2746509B2 (ja) | 1992-12-09 | 1992-12-09 | 光量制御装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69321809D1 DE69321809D1 (de) | 1998-12-03 |
DE69321809T2 true DE69321809T2 (de) | 1999-04-29 |
Family
ID=18222592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69321809T Expired - Lifetime DE69321809T2 (de) | 1992-12-09 | 1993-12-08 | Lichtmengensteuervorrichtung |
Country Status (5)
Country | Link |
---|---|
US (1) | US6064432A (de) |
EP (1) | EP0601555B1 (de) |
JP (1) | JP2746509B2 (de) |
CA (1) | CA2110646C (de) |
DE (1) | DE69321809T2 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3535450B2 (ja) * | 2000-05-08 | 2004-06-07 | ワテック株式会社 | ビデオカメラにおけるビデオカメラと自動絞りレンズとの交換接続装置およびその検出回路 |
US20050226612A1 (en) * | 2004-04-08 | 2005-10-13 | Asia Optical Co., Inc. | Automatic diaphragm assembly with a variable aperture for a lens |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4134653A (en) * | 1976-05-14 | 1979-01-16 | Copal Company Limited | Servoamplifier in an automatic diaphragm controlling device of a camera |
US4084122A (en) * | 1976-10-20 | 1978-04-11 | A. B. Dick Company | Drive circuit for stepper motor |
FR2440038A1 (fr) * | 1978-10-27 | 1980-05-23 | Cannesson Roland | Indicateur d'alarme |
JPS5850867A (ja) * | 1981-09-22 | 1983-03-25 | Asahi Seimitsu Kk | Cctvカメラ用自動絞り制御装置 |
JPS6064581A (ja) * | 1983-09-19 | 1985-04-13 | Asahi Seimitsu Kk | 遠隔制御可能なcctvカメラ用レンズの自動絞り制御装置 |
JPH02239782A (ja) * | 1989-03-14 | 1990-09-21 | Canon Electron Inc | 光量制御装置 |
CA2058396C (en) * | 1990-12-25 | 1995-05-30 | Osamu Sato | Light-quantity control device |
-
1992
- 1992-12-09 JP JP4329548A patent/JP2746509B2/ja not_active Expired - Lifetime
-
1993
- 1993-12-03 CA CA002110646A patent/CA2110646C/en not_active Expired - Lifetime
- 1993-12-08 EP EP93119767A patent/EP0601555B1/de not_active Expired - Lifetime
- 1993-12-08 DE DE69321809T patent/DE69321809T2/de not_active Expired - Lifetime
-
1995
- 1995-07-25 US US08/999,818 patent/US6064432A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69321809D1 (de) | 1998-12-03 |
US6064432A (en) | 2000-05-16 |
JP2746509B2 (ja) | 1998-05-06 |
EP0601555A1 (de) | 1994-06-15 |
CA2110646A1 (en) | 1994-06-10 |
JPH06175192A (ja) | 1994-06-24 |
EP0601555B1 (de) | 1998-10-28 |
CA2110646C (en) | 1999-08-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |