FR1234557A - Posemètre photo-électrique - Google Patents
Posemètre photo-électriqueInfo
- Publication number
- FR1234557A FR1234557A FR804245A FR804245A FR1234557A FR 1234557 A FR1234557 A FR 1234557A FR 804245 A FR804245 A FR 804245A FR 804245 A FR804245 A FR 804245A FR 1234557 A FR1234557 A FR 1234557A
- Authority
- FR
- France
- Prior art keywords
- photo
- electric light
- light meter
- meter
- electric
- 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 |
---|---|---|---|
DE1234557X | 1958-09-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1234557A true FR1234557A (fr) | 1960-10-18 |
Family
ID=7735386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR804245A Expired FR1234557A (fr) | 1958-09-05 | 1959-09-03 | Posemètre photo-électrique |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1234557A (fr) |
-
1959
- 1959-09-03 FR FR804245A patent/FR1234557A/fr not_active Expired
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