FR802512A - Luminous electric device for measuring exposure times with several measurement fields - Google Patents
Luminous electric device for measuring exposure times with several measurement fieldsInfo
- Publication number
- FR802512A FR802512A FR802512DA FR802512A FR 802512 A FR802512 A FR 802512A FR 802512D A FR802512D A FR 802512DA FR 802512 A FR802512 A FR 802512A
- Authority
- FR
- France
- Prior art keywords
- electric device
- exposure times
- several measurement
- measurement fields
- luminous 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
- 238000005259 measurement Methods 0.000 title 1
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 |
---|---|---|---|
DE802512X | 1935-03-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR802512A true FR802512A (en) | 1936-09-07 |
Family
ID=6719036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR802512D Expired FR802512A (en) | 1935-03-02 | 1936-03-02 | Luminous electric device for measuring exposure times with several measurement fields |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR802512A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE894197C (en) * | 1942-12-17 | 1953-10-22 | Michael Maul | Photo camera with automatic exposure control |
-
1936
- 1936-03-02 FR FR802512D patent/FR802512A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE894197C (en) * | 1942-12-17 | 1953-10-22 | Michael Maul | Photo camera with automatic exposure control |
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