JPS55120015A - Reflection photometric device for focal plane shutter - Google Patents
Reflection photometric device for focal plane shutterInfo
- Publication number
- JPS55120015A JPS55120015A JP2784879A JP2784879A JPS55120015A JP S55120015 A JPS55120015 A JP S55120015A JP 2784879 A JP2784879 A JP 2784879A JP 2784879 A JP2784879 A JP 2784879A JP S55120015 A JPS55120015 A JP S55120015A
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- charged
- correction
- operational amplifier
- exposure time
- 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.)
- Pending
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)
- Exposure Control For Cameras (AREA)
- Shutters For Cameras (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2784879A JPS55120015A (en) | 1979-03-09 | 1979-03-09 | Reflection photometric device for focal plane shutter |
US06/109,762 US4295720A (en) | 1979-03-09 | 1980-01-07 | Apparatus for determining light reflection from a focal plane shutter |
FR8000499A FR2451047A1 (fr) | 1979-03-09 | 1980-01-10 | Appareil de determination de la reflexion lumineuse d'un obturateur a rideau d'appareil photographique |
GB8007748A GB2044472B (en) | 1979-03-09 | 1980-03-07 | Shutter control circuit |
DE3008864A DE3008864C2 (de) | 1979-03-09 | 1980-03-07 | Vorrichtung zur Bestimmung der Lichtreflexion an einem Brennebenenverschluß |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2784879A JPS55120015A (en) | 1979-03-09 | 1979-03-09 | Reflection photometric device for focal plane shutter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55120015A true JPS55120015A (en) | 1980-09-16 |
Family
ID=12232332
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2784879A Pending JPS55120015A (en) | 1979-03-09 | 1979-03-09 | Reflection photometric device for focal plane shutter |
Country Status (5)
Country | Link |
---|---|
US (1) | US4295720A (ja) |
JP (1) | JPS55120015A (ja) |
DE (1) | DE3008864C2 (ja) |
FR (1) | FR2451047A1 (ja) |
GB (1) | GB2044472B (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57104120A (en) * | 1980-12-19 | 1982-06-29 | Olympus Optical Co Ltd | Automatic exposure control device for focal plane shutter |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4343541A (en) * | 1979-09-17 | 1982-08-10 | Olympus Optical Co., Ltd. | Reflection photometric apparatus for camera including focal plane shutter |
US4408852A (en) * | 1980-12-05 | 1983-10-11 | Olympus Optical Company Ltd. | Automatic exposure controller for camera of TTL direct photometry type |
US4390258A (en) * | 1980-12-15 | 1983-06-28 | Olympus Optical Co. Ltd. | Photomeric circuit for camera |
US4444481A (en) * | 1980-12-26 | 1984-04-24 | Olympus Optical Company Ltd. | Exposure control circuit for a camera |
JPS57157225A (en) * | 1981-03-24 | 1982-09-28 | Olympus Optical Co Ltd | Control circuit for exposure of camera |
JPS5828827U (ja) * | 1981-08-18 | 1983-02-24 | オリンパス光学工業株式会社 | カメラの反射測光装置 |
US5184174A (en) * | 1991-11-19 | 1993-02-02 | Eastman Kodak Company | Photographic system with off-the-film exposure metering |
KR101246830B1 (ko) * | 2006-06-09 | 2013-03-28 | 삼성디스플레이 주식회사 | 표시 장치 및 이의 구동 방법 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5127382A (ja) * | 1974-07-02 | 1976-03-06 | Olympus Optical Co | |
JPS53107828A (en) * | 1977-03-02 | 1978-09-20 | Asahi Optical Co Ltd | Electronic shutter circuit |
-
1979
- 1979-03-09 JP JP2784879A patent/JPS55120015A/ja active Pending
-
1980
- 1980-01-07 US US06/109,762 patent/US4295720A/en not_active Expired - Lifetime
- 1980-01-10 FR FR8000499A patent/FR2451047A1/fr active Granted
- 1980-03-07 GB GB8007748A patent/GB2044472B/en not_active Expired
- 1980-03-07 DE DE3008864A patent/DE3008864C2/de not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57104120A (en) * | 1980-12-19 | 1982-06-29 | Olympus Optical Co Ltd | Automatic exposure control device for focal plane shutter |
JPH0132965B2 (ja) * | 1980-12-19 | 1989-07-11 | Olympus Optical Co |
Also Published As
Publication number | Publication date |
---|---|
GB2044472B (en) | 1983-01-12 |
US4295720A (en) | 1981-10-20 |
DE3008864A1 (de) | 1980-09-18 |
DE3008864C2 (de) | 1982-11-04 |
FR2451047B1 (ja) | 1984-06-15 |
FR2451047A1 (fr) | 1980-10-03 |
GB2044472A (en) | 1980-10-15 |
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