GB359475A - Circuit arrangement for the conversion of variations of light intensity into electrical potential variations - Google Patents
Circuit arrangement for the conversion of variations of light intensity into electrical potential variationsInfo
- Publication number
- GB359475A GB359475A GB12251/30A GB1225130A GB359475A GB 359475 A GB359475 A GB 359475A GB 12251/30 A GB12251/30 A GB 12251/30A GB 1225130 A GB1225130 A GB 1225130A GB 359475 A GB359475 A GB 359475A
- Authority
- GB
- United Kingdom
- Prior art keywords
- variations
- cell
- film
- conversion
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
359,475. Optical sound-reproducing apparatus; television. GRUTZMACHER, M., 3, Hahnelstrasse, Friedenau, Berlin. April 17, 1930, No. 12251. Convention date, April 19, 1929. Addition to 345,317. Void [Published under Sect. 91 of the Acts]. [Class 40 (ii).] In a known method of converting light variations into electrical variations, a source of light a, Fig. 1, illuminates a slit in a shutter b which is focused on a film f and illuminates the cell g. According to the invention, the use of the shutter b is avoided by employing a light-sensitive cell which is sensitive only at a point. The film f, Fig. 2, is illuminated by a source a and an image is projected into the plane of the cell d, so that as the film is moved the cell receives each portion of the film in turn. The cell d consists of a metal point resting on a crystal. The method is applicable to television, the conversion of optical sound records into sound, and the measurement of radiation energy.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE359475X | 1929-04-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB359475A true GB359475A (en) | 1931-10-22 |
Family
ID=6291192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12251/30A Expired GB359475A (en) | 1929-04-19 | 1930-04-17 | Circuit arrangement for the conversion of variations of light intensity into electrical potential variations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB359475A (en) |
-
1930
- 1930-04-17 GB GB12251/30A patent/GB359475A/en not_active Expired
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