FR968759A - Photomètre - Google Patents
PhotomètreInfo
- Publication number
- FR968759A FR968759A FR968759DA FR968759A FR 968759 A FR968759 A FR 968759A FR 968759D A FR968759D A FR 968759DA FR 968759 A FR968759 A FR 968759A
- Authority
- FR
- France
- Prior art keywords
- photometer
- 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
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing
- G01J1/4214—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for view-taking apparatus
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US968759XA | 1947-12-24 | 1947-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR968759A true FR968759A (fr) | 1950-12-05 |
Family
ID=22259511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR968759D Expired FR968759A (fr) | 1947-12-24 | 1948-07-06 | Photomètre |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR968759A (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2824696A (en) * | 1956-09-10 | 1958-02-25 | Donald H Norwood | Direct-reading photographic exposure meters and calculator devices therefor |
| US2913955A (en) * | 1957-01-28 | 1959-11-24 | Donald H Norwood | Direct reading light meter and light valve unit therefor |
| US2934996A (en) * | 1957-01-28 | 1960-05-03 | Honeywell Regulator Co | Photographic exposure meter |
-
1948
- 1948-07-06 FR FR968759D patent/FR968759A/fr not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2824696A (en) * | 1956-09-10 | 1958-02-25 | Donald H Norwood | Direct-reading photographic exposure meters and calculator devices therefor |
| US2913955A (en) * | 1957-01-28 | 1959-11-24 | Donald H Norwood | Direct reading light meter and light valve unit therefor |
| US2934996A (en) * | 1957-01-28 | 1960-05-03 | Honeywell Regulator Co | Photographic exposure meter |
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