FR1424524A - Photometric balance measuring method and device - Google Patents
Photometric balance measuring method and deviceInfo
- Publication number
- FR1424524A FR1424524A FR997134A FR997134A FR1424524A FR 1424524 A FR1424524 A FR 1424524A FR 997134 A FR997134 A FR 997134A FR 997134 A FR997134 A FR 997134A FR 1424524 A FR1424524 A FR 1424524A
- Authority
- FR
- France
- Prior art keywords
- measuring method
- balance measuring
- photometric balance
- photometric
- measuring
- Prior art date
- 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
- 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
- G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
- G01J1/20—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
- G01J1/34—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using separate light paths used alternately or sequentially, e.g. flicker
- G01J1/36—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using separate light paths used alternately or sequentially, e.g. flicker using electric radiation detectors
-
- 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
- G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
- G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
- G01J1/1626—Arrangements with two photodetectors, the signals of which are compared
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR997134A FR1424524A (en) | 1964-12-02 | 1964-12-02 | Photometric balance measuring method and device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR997134A FR1424524A (en) | 1964-12-02 | 1964-12-02 | Photometric balance measuring method and device |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1424524A true FR1424524A (en) | 1966-01-14 |
Family
ID=8843864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR997134A Expired FR1424524A (en) | 1964-12-02 | 1964-12-02 | Photometric balance measuring method and device |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1424524A (en) |
-
1964
- 1964-12-02 FR FR997134A patent/FR1424524A/en not_active Expired
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