FR851472A - Posemètre photo-électrique - Google Patents
Posemètre photo-électriqueInfo
- Publication number
- FR851472A FR851472A FR851472DA FR851472A FR 851472 A FR851472 A FR 851472A FR 851472D A FR851472D A FR 851472DA FR 851472 A FR851472 A FR 851472A
- Authority
- FR
- France
- Prior art keywords
- light meter
- photoelectric light
- photoelectric
- meter
- light
- 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
- G01J1/4219—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for enlargers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE851472X | 1938-03-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR851472A true FR851472A (fr) | 1940-01-09 |
Family
ID=6781264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR851472D Expired FR851472A (fr) | 1938-03-11 | 1939-03-10 | Posemètre photo-électrique |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR851472A (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1080318B (de) * | 1958-03-01 | 1960-04-21 | Voigtlaender Ag | Lichtschwaechungseinrichtung fuer photographische Zwecke |
DE1110906B (de) * | 1956-04-03 | 1961-07-13 | Agfa Ag | Lichtmesseinrichtung mit seitlich zum Lichtstrahlengang angeordnetem Lichtempfaenger |
DE1151133B (de) * | 1958-05-14 | 1963-07-04 | Reichert Optische Werke Ag | Photoelektrischer Belichtungsmesser fuer Mikroskope |
-
1939
- 1939-03-10 FR FR851472D patent/FR851472A/fr not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1110906B (de) * | 1956-04-03 | 1961-07-13 | Agfa Ag | Lichtmesseinrichtung mit seitlich zum Lichtstrahlengang angeordnetem Lichtempfaenger |
DE1080318B (de) * | 1958-03-01 | 1960-04-21 | Voigtlaender Ag | Lichtschwaechungseinrichtung fuer photographische Zwecke |
DE1151133B (de) * | 1958-05-14 | 1963-07-04 | Reichert Optische Werke Ag | Photoelektrischer Belichtungsmesser fuer Mikroskope |
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