JPS57169734A - Photometric system using focus detecting optical system - Google Patents
Photometric system using focus detecting optical systemInfo
- Publication number
- JPS57169734A JPS57169734A JP56055763A JP5576381A JPS57169734A JP S57169734 A JPS57169734 A JP S57169734A JP 56055763 A JP56055763 A JP 56055763A JP 5576381 A JP5576381 A JP 5576381A JP S57169734 A JPS57169734 A JP S57169734A
- Authority
- JP
- Japan
- Prior art keywords
- light receiving
- photometric
- photometry
- focus
- outputs
- 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.)
- Granted
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
- G03B7/099—Arrangement of photoelectric elements in or on the camera
- G03B7/0993—Arrangement of photoelectric elements in or on the camera in the camera
- G03B7/0997—Through the lens [TTL] measuring
- G03B7/09971—Through the lens [TTL] measuring in mirror-reflex cameras
- G03B7/09976—Through the lens [TTL] measuring in mirror-reflex cameras the sensor being mounted in, before, or behind the porro-prism
-
- 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
- G03B7/089—Analogue circuits for storage of exposure value in mirror reflex cameras
-
- 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
- G03B7/087—Analogue circuits for control of both exposure time and aperture
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Focusing (AREA)
- Exposure Control For Cameras (AREA)
- Automatic Focus Adjustment (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56055763A JPS57169734A (en) | 1981-04-14 | 1981-04-14 | Photometric system using focus detecting optical system |
US06/528,240 US4488799A (en) | 1981-04-14 | 1983-09-01 | Metering system using a focus detecting optical system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56055763A JPS57169734A (en) | 1981-04-14 | 1981-04-14 | Photometric system using focus detecting optical system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57169734A true JPS57169734A (en) | 1982-10-19 |
JPS6250809B2 JPS6250809B2 (ja) | 1987-10-27 |
Family
ID=13007881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56055763A Granted JPS57169734A (en) | 1981-04-14 | 1981-04-14 | Photometric system using focus detecting optical system |
Country Status (2)
Country | Link |
---|---|
US (1) | US4488799A (ja) |
JP (1) | JPS57169734A (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5202555A (en) * | 1983-01-10 | 1993-04-13 | Minolta Camera Kabushiki Kaisha | Focus detecting device for use with cameras with correlation and contrast detecting means |
US4636624A (en) * | 1983-01-10 | 1987-01-13 | Minolta Camera Kabushiki Kaisha | Focus detecting device for use with cameras |
US4791446A (en) * | 1986-02-14 | 1988-12-13 | Minolta Camera Kabushiki Kaisha | Light measuring device |
US5168299A (en) * | 1986-05-16 | 1992-12-01 | Minolta Camera Co., Ltd. | Camera with a multi-zone focus detecting device |
US4774539A (en) * | 1986-10-01 | 1988-09-27 | Canon Kabushiki Kaisha | Camera having a focus detecting apparatus |
US4890309A (en) * | 1987-02-25 | 1989-12-26 | Massachusetts Institute Of Technology | Lithography mask with a π-phase shifting attenuator |
JPS6472126A (en) * | 1987-09-11 | 1989-03-17 | Minolta Camera Kk | Range finding/photometric optical system |
JP2704960B2 (ja) * | 1988-05-20 | 1998-01-26 | キヤノン株式会社 | カメラ |
US5815742A (en) * | 1996-06-11 | 1998-09-29 | Minolta Co., Ltd. | Apparatus having a driven member and a drive controller therefor |
US6973264B2 (en) * | 2001-09-27 | 2005-12-06 | Nikon Corporation | Focal point detection apparatus, focusing system, camera, and focal point detection method |
US6975810B2 (en) * | 2003-03-26 | 2005-12-13 | Nikon Corporation | Focal point detection device and camera |
CN106254790A (zh) * | 2016-08-02 | 2016-12-21 | 乐视控股(北京)有限公司 | 拍照处理方法及装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5552035A (en) * | 1978-10-13 | 1980-04-16 | Minolta Camera Co Ltd | Exposure control device |
JPS5598725A (en) * | 1979-01-23 | 1980-07-28 | Konishiroku Photo Ind Co Ltd | Photodetecting part of exposure control unit for camera |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3286097A (en) * | 1963-11-07 | 1966-11-15 | Donald W Norwood | Photometric device having optionally selective response to light on two photoresistive cells |
US3498193A (en) * | 1966-05-28 | 1970-03-03 | Nippon Kogaku Kk | Exposure meter for measuring the illumination of image area |
DE2705104A1 (de) * | 1977-02-08 | 1978-08-10 | Agfa Gevaert Ag | Fotografische oder kinematografische kamera |
US4349254A (en) * | 1979-02-13 | 1982-09-14 | Asahi Kogaku Kogyo Kabushiki Kaisha | Camera focus detecting device |
US4302089A (en) * | 1979-10-15 | 1981-11-24 | Nippon Kogaku K.K. | Reflecting mirror device in a single lens reflex camera |
JPS56104323A (en) * | 1980-01-23 | 1981-08-20 | Minolta Camera Co Ltd | Ttl photometric device of automatic exposure controlling single-lens reflex camera |
-
1981
- 1981-04-14 JP JP56055763A patent/JPS57169734A/ja active Granted
-
1983
- 1983-09-01 US US06/528,240 patent/US4488799A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5552035A (en) * | 1978-10-13 | 1980-04-16 | Minolta Camera Co Ltd | Exposure control device |
JPS5598725A (en) * | 1979-01-23 | 1980-07-28 | Konishiroku Photo Ind Co Ltd | Photodetecting part of exposure control unit for camera |
Also Published As
Publication number | Publication date |
---|---|
US4488799A (en) | 1984-12-18 |
JPS6250809B2 (ja) | 1987-10-27 |
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