JPS55123929U - - Google Patents
Info
- Publication number
- JPS55123929U JPS55123929U JP1979021889U JP2188979U JPS55123929U JP S55123929 U JPS55123929 U JP S55123929U JP 1979021889 U JP1979021889 U JP 1979021889U JP 2188979 U JP2188979 U JP 2188979U JP S55123929 U JPS55123929 U JP S55123929U
- 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.)
- 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
-
- 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
- G03B7/09972—Through the lens [TTL] measuring in mirror-reflex cameras using the mirror as sensor light reflecting or transmitting member
-
- 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
- G03B7/09974—Through the lens [TTL] measuring in mirror-reflex cameras using the film or shutter as sensor light reflecting member
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Control For Cameras (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979021889U JPS55123929U (en) | 1979-02-23 | 1979-02-23 | |
| DE19803006756 DE3006756A1 (en) | 1979-02-23 | 1980-02-22 | Through-the-lens exposure control for SLR camera - has integral photocell and condenser lens to measure light reflected off film through half-silvered mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979021889U JPS55123929U (en) | 1979-02-23 | 1979-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55123929U true JPS55123929U (en) | 1980-09-03 |
Family
ID=12067667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979021889U Pending JPS55123929U (en) | 1979-02-23 | 1979-02-23 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS55123929U (en) |
| DE (1) | DE3006756A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4325614A (en) * | 1980-12-16 | 1982-04-20 | Polaroid Corporation | Exposure control system with shutter operation controlled by a microcomputer |
| JPS57185021A (en) * | 1981-05-09 | 1982-11-15 | Canon Inc | Photometric device of single-lense reflex camera |
| JPS58114023A (en) * | 1981-12-28 | 1983-07-07 | Olympus Optical Co Ltd | Aperture control circuit for ttl auto strobe |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5269620A (en) * | 1975-12-09 | 1977-06-09 | Asahi Optical Co Ltd | Singleelens reflex camera photometric device |
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1979
- 1979-02-23 JP JP1979021889U patent/JPS55123929U/ja active Pending
-
1980
- 1980-02-22 DE DE19803006756 patent/DE3006756A1/en not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5269620A (en) * | 1975-12-09 | 1977-06-09 | Asahi Optical Co Ltd | Singleelens reflex camera photometric device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3006756A1 (en) | 1980-09-04 |