JPS49129582A - - Google Patents
Info
- Publication number
- JPS49129582A JPS49129582A JP4099973A JP4099973A JPS49129582A JP S49129582 A JPS49129582 A JP S49129582A JP 4099973 A JP4099973 A JP 4099973A JP 4099973 A JP4099973 A JP 4099973A JP S49129582 A JPS49129582 A JP S49129582A
- 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
- 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
- G01J1/4228—Photometry, e.g. photographic exposure meter using electric radiation detectors arrangements with two or more detectors, e.g. for sensitivity compensation
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Measurement Of Optical Distance (AREA)
- Focusing (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Exposure Control For Cameras (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4099973A JPS49129582A (de) | 1973-04-11 | 1973-04-11 | |
| DE19742417856 DE2417856C3 (de) | 1973-04-11 | 1974-04-11 | Schaltungsanordnung zur Messung der Helligkeit und der Entfernung eines Objekts |
| US05/637,460 US4095241A (en) | 1973-04-11 | 1975-12-03 | Photo-sensing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4099973A JPS49129582A (de) | 1973-04-11 | 1973-04-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS49129582A true JPS49129582A (de) | 1974-12-11 |
Family
ID=12596104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4099973A Pending JPS49129582A (de) | 1973-04-11 | 1973-04-11 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS49129582A (de) |
| DE (1) | DE2417856C3 (de) |
-
1973
- 1973-04-11 JP JP4099973A patent/JPS49129582A/ja active Pending
-
1974
- 1974-04-11 DE DE19742417856 patent/DE2417856C3/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2417856A1 (de) | 1974-10-24 |
| DE2417856C3 (de) | 1978-07-06 |
| DE2417856B2 (de) | 1977-11-03 |