JPS4928030U - - Google Patents
Info
- Publication number
- JPS4928030U JPS4928030U JP1972068351U JP6835172U JPS4928030U JP S4928030 U JPS4928030 U JP S4928030U JP 1972068351 U JP1972068351 U JP 1972068351U JP 6835172 U JP6835172 U JP 6835172U JP S4928030 U JPS4928030 U JP S4928030U
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
-
- 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)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Exposure Control For Cameras (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1972068351U JPS5120773Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-06-09 | 1972-06-09 | |
| US366485A US3879740A (en) | 1972-06-09 | 1973-06-04 | Light-measuring systems |
| GB2747073A GB1386188A (en) | 1972-06-09 | 1973-06-08 | Light measurement circuit |
| FR7320990A FR2188156B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-06-09 | 1973-06-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1972068351U JPS5120773Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-06-09 | 1972-06-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4928030U true JPS4928030U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-03-11 |
| JPS5120773Y2 JPS5120773Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-05-29 |
Family
ID=13371307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1972068351U Expired JPS5120773Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-06-09 | 1972-06-09 |
Country Status (4)
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56251Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1974-07-27 | 1981-01-07 | ||
| JPS5853294B2 (ja) * | 1974-08-21 | 1983-11-28 | ミノルタ株式会社 | ソクコウカイロ |
| US4442381A (en) * | 1982-08-30 | 1984-04-10 | Fuji Photo Optical Co., Ltd. | Auto strobe control circuit |
| CN110672202B (zh) * | 2019-09-18 | 2022-02-15 | 上海奕瑞光电子科技股份有限公司 | 平板探测器像素电路、平板探测系统及平板探测方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3693518A (en) * | 1968-01-02 | 1972-09-26 | Nippon Kogaku Kk | Memory circuit of an electric shutter |
| US3690230A (en) * | 1969-12-25 | 1972-09-12 | Asahi Optical Co Ltd | Electronic circuits for automatic camera controls |
| JPS4837605B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1970-04-14 | 1973-11-12 | ||
| GB1339622A (en) * | 1970-06-16 | 1973-12-05 | Asahi Optical Co Ltd | Electric shutter control circuit for a single-lens reflex camera |
-
1972
- 1972-06-09 JP JP1972068351U patent/JPS5120773Y2/ja not_active Expired
-
1973
- 1973-06-04 US US366485A patent/US3879740A/en not_active Expired - Lifetime
- 1973-06-08 GB GB2747073A patent/GB1386188A/en not_active Expired
- 1973-06-08 FR FR7320990A patent/FR2188156B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5120773Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-05-29 |
| FR2188156A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-01-18 |
| FR2188156B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-04-09 |
| US3879740A (en) | 1975-04-22 |
| GB1386188A (en) | 1975-03-05 |