JPS4853720A - - Google Patents
Info
- Publication number
- JPS4853720A JPS4853720A JP46086739A JP8673971A JPS4853720A JP S4853720 A JPS4853720 A JP S4853720A JP 46086739 A JP46086739 A JP 46086739A JP 8673971 A JP8673971 A JP 8673971A JP S4853720 A JPS4853720 A JP S4853720A
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Control For Cameras (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP46086739A JPS4853720A (en) | 1971-11-02 | 1971-11-02 | |
| US00301842A US3777638A (en) | 1971-11-02 | 1972-10-30 | Exposure control circuitry compensated for temperature and voltage fluctuations |
| DE2253685A DE2253685A1 (en) | 1971-11-02 | 1972-11-02 | DEVICE FOR ELECTRIC EXPOSURE CONTROL FOR A SINGLE-EYED MIRROR REFLEX CAMERA |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP46086739A JPS4853720A (en) | 1971-11-02 | 1971-11-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4853720A true JPS4853720A (en) | 1973-07-28 |
Family
ID=13895168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP46086739A Pending JPS4853720A (en) | 1971-11-02 | 1971-11-02 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3777638A (en) |
| JP (1) | JPS4853720A (en) |
| DE (1) | DE2253685A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT335198B (en) * | 1972-12-01 | 1977-02-25 | Reichert Optische Werke Ag | DEVICE FOR DETERMINING THE EXPOSURE TIME FOR A PHOTOGRAPHICAL RECORDING DEVICE |
| US4000498A (en) * | 1974-04-18 | 1976-12-28 | Canon Kabushiki Kaisha | Temperature compensated exposure control apparatus for a camera |
| FR2317675A1 (en) * | 1975-07-10 | 1977-02-04 | Iodvalkis Vitautas | Photographic camera exposure timers - has one input of timer block connected to photoresistor of RC integrated circuit |
| JPH07106869A (en) * | 1993-09-30 | 1995-04-21 | Nec Corp | Constant current circuit |
| JP4288553B2 (en) * | 2000-07-25 | 2009-07-01 | 富士フイルム株式会社 | Camera strobe device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3641890A (en) * | 1967-10-31 | 1972-02-15 | Nippon Kogaku Kk | Exposure-measuring device for cameras provided with electronic shutter |
| US3698302A (en) * | 1969-11-14 | 1972-10-17 | Copal Co Ltd | Circuit for preventing false operation of an electronic camera shutter |
| JPS4817337B1 (en) * | 1970-07-03 | 1973-05-29 |
-
1971
- 1971-11-02 JP JP46086739A patent/JPS4853720A/ja active Pending
-
1972
- 1972-10-30 US US00301842A patent/US3777638A/en not_active Expired - Lifetime
- 1972-11-02 DE DE2253685A patent/DE2253685A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2253685A1 (en) | 1973-05-17 |
| US3777638A (en) | 1973-12-11 |