JPS532056B2 - - Google Patents
Info
- Publication number
- JPS532056B2 JPS532056B2 JP9749971A JP9749971A JPS532056B2 JP S532056 B2 JPS532056 B2 JP S532056B2 JP 9749971 A JP9749971 A JP 9749971A JP 9749971 A JP9749971 A JP 9749971A JP S532056 B2 JPS532056 B2 JP S532056B2
- Authority
- JP
- Japan
- 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
- 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
- G03B7/09978—Protection against viewer backlight or integration of the viewer light into the measured light
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Control For Cameras (AREA)
- Viewfinders (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9749971A JPS532056B2 (US06589383-20030708-C00041.png) | 1971-12-01 | 1971-12-01 | |
| US00309779A US3810202A (en) | 1971-12-01 | 1972-11-27 | Light-measuring method and structure for cameras |
| DE2258219A DE2258219C3 (de) | 1971-12-01 | 1972-11-28 | Verfahren zur Lichtmessung in einäugigen Spiegelreflexkameras und Anordnung zur Durchführung des Verfahrens |
| GB5564372A GB1410067A (en) | 1971-12-01 | 1972-12-01 | Light measurement through the objective in a single lens reflex camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9749971A JPS532056B2 (US06589383-20030708-C00041.png) | 1971-12-01 | 1971-12-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4861143A JPS4861143A (US06589383-20030708-C00041.png) | 1973-08-27 |
| JPS532056B2 true JPS532056B2 (US06589383-20030708-C00041.png) | 1978-01-25 |
Family
ID=14193942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9749971A Expired JPS532056B2 (US06589383-20030708-C00041.png) | 1971-12-01 | 1971-12-01 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3810202A (US06589383-20030708-C00041.png) |
| JP (1) | JPS532056B2 (US06589383-20030708-C00041.png) |
| DE (1) | DE2258219C3 (US06589383-20030708-C00041.png) |
| GB (1) | GB1410067A (US06589383-20030708-C00041.png) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2463393C2 (US06589383-20030708-C00041.png) | 1973-07-16 | 1987-11-19 | Canon K.K., Tokio/Tokyo, Jp | |
| JPS5710411B2 (US06589383-20030708-C00041.png) * | 1973-08-27 | 1982-02-26 | ||
| US4178084A (en) * | 1975-06-06 | 1979-12-11 | Canon Kabushiki Kaisha | Device for measuring light incident on an image forming optical system |
| JP2002182303A (ja) * | 2000-12-15 | 2002-06-26 | Asahi Optical Co Ltd | ミラーボックスおよび電子スチルカメラ |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3486814A (en) * | 1966-04-08 | 1969-12-30 | Minolta Camera Kk | Motion picture camera light control means |
| US3633473A (en) * | 1969-11-10 | 1972-01-11 | Copal Co Ltd | Exposure control apparatus for photographic camera |
-
1971
- 1971-12-01 JP JP9749971A patent/JPS532056B2/ja not_active Expired
-
1972
- 1972-11-27 US US00309779A patent/US3810202A/en not_active Expired - Lifetime
- 1972-11-28 DE DE2258219A patent/DE2258219C3/de not_active Expired
- 1972-12-01 GB GB5564372A patent/GB1410067A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1410067A (en) | 1975-10-15 |
| US3810202A (en) | 1974-05-07 |
| DE2258219B2 (de) | 1974-06-27 |
| DE2258219A1 (de) | 1973-06-14 |
| DE2258219C3 (de) | 1975-02-13 |
| JPS4861143A (US06589383-20030708-C00041.png) | 1973-08-27 |
