JPS55118019A - Focusing point detector - Google Patents
Focusing point detectorInfo
- Publication number
- JPS55118019A JPS55118019A JP2583979A JP2583979A JPS55118019A JP S55118019 A JPS55118019 A JP S55118019A JP 2583979 A JP2583979 A JP 2583979A JP 2583979 A JP2583979 A JP 2583979A JP S55118019 A JPS55118019 A JP S55118019A
- Authority
- JP
- Japan
- Prior art keywords
- lenses
- conversion means
- relay lenses
- long
- photographing lens
- 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
Landscapes
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2583979A JPS55118019A (en) | 1979-03-05 | 1979-03-05 | Focusing point detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2583979A JPS55118019A (en) | 1979-03-05 | 1979-03-05 | Focusing point detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55118019A true JPS55118019A (en) | 1980-09-10 |
Family
ID=12177015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2583979A Pending JPS55118019A (en) | 1979-03-05 | 1979-03-05 | Focusing point detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55118019A (ja) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56128623U (ja) * | 1980-02-29 | 1981-09-30 | ||
JPS57125912A (en) * | 1981-01-30 | 1982-08-05 | Nippon Kogaku Kk <Nikon> | Ttl type focus detector for camera |
JPS57204014A (en) * | 1981-06-10 | 1982-12-14 | Olympus Optical Co Ltd | Switching device for focusing photodetecting element |
JPS59133512A (ja) * | 1983-01-21 | 1984-07-31 | Nippon Kogaku Kk <Nikon> | 焦点検出装置 |
DE3417385A1 (de) * | 1983-05-12 | 1984-11-15 | Canon K.K., Tokio/Tokyo | Scharfeinstellungs-messeinrichtung |
US4618236A (en) * | 1983-11-08 | 1986-10-21 | Canon Kabushiki Kaisha | Focus detecting apparatus |
DE3803305A1 (de) * | 1987-02-04 | 1988-08-18 | Asahi Optical Co Ltd | Einrichtung zum automatischen feststellen der fokussierung einer fotografischen kamera |
US4908505A (en) * | 1987-05-15 | 1990-03-13 | Minolta Camera Kabushiki Kaisha | System for detecting the focus condition of a cata-dioptric lens and interchangeable lens for use therewith |
US4914282A (en) * | 1984-07-06 | 1990-04-03 | Canon Kabushiki Kaisha | Focus detection system employing multiple area light distribution sensors |
US4959677A (en) * | 1986-10-01 | 1990-09-25 | Canon Kabushiki Kaisha | Device for detecting the focus adjusted state of an objecting lens |
US4978988A (en) * | 1986-11-20 | 1990-12-18 | Minolta Camera Kabushiki Kaisha | Focus detection apparatus of camera |
US5084722A (en) * | 1987-05-15 | 1992-01-28 | Minolta Camera Kabushiki Kaisha | Focus condition detecting device |
US5138358A (en) * | 1989-01-11 | 1992-08-11 | Canon Kabushiki Kaisha | Autofocusing apparatus utilizing intermittent light projection |
US5289226A (en) * | 1991-05-15 | 1994-02-22 | Olympus Optical Co., Ltd. | Focus detecting device including a diffusion surface disposed on a predetermined image surface |
US5321461A (en) * | 1991-08-22 | 1994-06-14 | Olympus Optical Co., Ltd. | Focus detecting device |
US5345291A (en) * | 1991-12-27 | 1994-09-06 | Olympus Optical Co., Ltd. | Compact focus detecting device |
US5424528A (en) * | 1992-10-30 | 1995-06-13 | Olympus Optical Co., Ltd. | Focus detecting device having at least three reimaging lenses |
US5572011A (en) * | 1993-12-28 | 1996-11-05 | Olympus Optical Co., Ltd. | Focus detecting method and distance measuring method with a plurality of light fluxes and a contrast operation |
US5710667A (en) * | 1994-03-29 | 1998-01-20 | Olympus Optical Co., Ltd. | Focus detecting optical system |
US5740478A (en) * | 1993-12-01 | 1998-04-14 | Canon Kabushiki Kaisha | Camera having autofocus apparatus |
US6072956A (en) * | 1997-02-09 | 2000-06-06 | Minolta Co., Ltd. | Focus detector |
JP2006047814A (ja) * | 2004-08-06 | 2006-02-16 | Canon Inc | 焦点検出装置及びそれを有するカメラシステム |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5282419A (en) * | 1975-12-26 | 1977-07-09 | Leitz Ernst Gmbh | Device for deciding photoelectrically position of image sharp plane |
DE2634655A1 (de) * | 1976-08-02 | 1978-02-09 | Leitz Ernst Gmbh | Vorrichtung zur fokussierung einer reflexkamera |
-
1979
- 1979-03-05 JP JP2583979A patent/JPS55118019A/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5282419A (en) * | 1975-12-26 | 1977-07-09 | Leitz Ernst Gmbh | Device for deciding photoelectrically position of image sharp plane |
DE2634655A1 (de) * | 1976-08-02 | 1978-02-09 | Leitz Ernst Gmbh | Vorrichtung zur fokussierung einer reflexkamera |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56128623U (ja) * | 1980-02-29 | 1981-09-30 | ||
JPS6243284Y2 (ja) * | 1980-02-29 | 1987-11-10 | ||
JPS57125912A (en) * | 1981-01-30 | 1982-08-05 | Nippon Kogaku Kk <Nikon> | Ttl type focus detector for camera |
JPH0241005B2 (ja) * | 1981-01-30 | 1990-09-14 | Nippon Kogaku Kk | |
JPS57204014A (en) * | 1981-06-10 | 1982-12-14 | Olympus Optical Co Ltd | Switching device for focusing photodetecting element |
JPH0415929B2 (ja) * | 1981-06-10 | 1992-03-19 | Olympus Optical Co | |
JPS59133512A (ja) * | 1983-01-21 | 1984-07-31 | Nippon Kogaku Kk <Nikon> | 焦点検出装置 |
JPH0473566B2 (ja) * | 1983-01-21 | 1992-11-24 | ||
DE3417385A1 (de) * | 1983-05-12 | 1984-11-15 | Canon K.K., Tokio/Tokyo | Scharfeinstellungs-messeinrichtung |
US4618236A (en) * | 1983-11-08 | 1986-10-21 | Canon Kabushiki Kaisha | Focus detecting apparatus |
US4914282A (en) * | 1984-07-06 | 1990-04-03 | Canon Kabushiki Kaisha | Focus detection system employing multiple area light distribution sensors |
US4959677A (en) * | 1986-10-01 | 1990-09-25 | Canon Kabushiki Kaisha | Device for detecting the focus adjusted state of an objecting lens |
US4978988A (en) * | 1986-11-20 | 1990-12-18 | Minolta Camera Kabushiki Kaisha | Focus detection apparatus of camera |
DE3803305C3 (de) * | 1987-02-04 | 1998-12-10 | Asahi Optical Co Ltd | Vorrichtung zum Erfassen der Scharfeinstellung eines Kameraobjektivs |
DE3803305A1 (de) * | 1987-02-04 | 1988-08-18 | Asahi Optical Co Ltd | Einrichtung zum automatischen feststellen der fokussierung einer fotografischen kamera |
US4908505A (en) * | 1987-05-15 | 1990-03-13 | Minolta Camera Kabushiki Kaisha | System for detecting the focus condition of a cata-dioptric lens and interchangeable lens for use therewith |
US5084722A (en) * | 1987-05-15 | 1992-01-28 | Minolta Camera Kabushiki Kaisha | Focus condition detecting device |
US5138358A (en) * | 1989-01-11 | 1992-08-11 | Canon Kabushiki Kaisha | Autofocusing apparatus utilizing intermittent light projection |
US5289226A (en) * | 1991-05-15 | 1994-02-22 | Olympus Optical Co., Ltd. | Focus detecting device including a diffusion surface disposed on a predetermined image surface |
US5321461A (en) * | 1991-08-22 | 1994-06-14 | Olympus Optical Co., Ltd. | Focus detecting device |
US5345291A (en) * | 1991-12-27 | 1994-09-06 | Olympus Optical Co., Ltd. | Compact focus detecting device |
US5424528A (en) * | 1992-10-30 | 1995-06-13 | Olympus Optical Co., Ltd. | Focus detecting device having at least three reimaging lenses |
US5740478A (en) * | 1993-12-01 | 1998-04-14 | Canon Kabushiki Kaisha | Camera having autofocus apparatus |
US5572011A (en) * | 1993-12-28 | 1996-11-05 | Olympus Optical Co., Ltd. | Focus detecting method and distance measuring method with a plurality of light fluxes and a contrast operation |
US5710667A (en) * | 1994-03-29 | 1998-01-20 | Olympus Optical Co., Ltd. | Focus detecting optical system |
US6072956A (en) * | 1997-02-09 | 2000-06-06 | Minolta Co., Ltd. | Focus detector |
JP2006047814A (ja) * | 2004-08-06 | 2006-02-16 | Canon Inc | 焦点検出装置及びそれを有するカメラシステム |
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