GB353696A - Improvements in the reproduction of sound from sound film records - Google Patents
Improvements in the reproduction of sound from sound film recordsInfo
- Publication number
- GB353696A GB353696A GB2250030A GB2250030A GB353696A GB 353696 A GB353696 A GB 353696A GB 2250030 A GB2250030 A GB 2250030A GB 2250030 A GB2250030 A GB 2250030A GB 353696 A GB353696 A GB 353696A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sound
- prism
- record
- optical
- reflected
- 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
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
Landscapes
- Optical Head (AREA)
Abstract
353,696. Optical sound-reproducing apparatus. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and PETERS, W. H., of General Electric Co., Wembley, Middlesex. July 25, 1930, No. 22500. [Class 40 (ii).] An optical soundreproducing system is arranged so that the light is reflected from a reflecting surface 5 disposed behind the record 1 and with all the optical system, other than the reflector, arranged in front of the record. The light passes from a source 2, through an optical system 3, 4 and the sound film 1 on to the mirror 5, and is reflected therefrom on to a prism 6 arranged at the upper part of the lens system 3. The prism 6 forms an image of the sound track on a slit 7 arranged in front of a photo-electric cell 8. The incident beam is slightly inclined to the axis of the optical system. A mirror may be employed instead of the prism 6 and the slit 7 may be arranged in the incident beam. The Provisional Specification describes also the light as being reflected from the sound record.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2250030A GB353696A (en) | 1930-07-25 | 1930-07-25 | Improvements in the reproduction of sound from sound film records |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2250030A GB353696A (en) | 1930-07-25 | 1930-07-25 | Improvements in the reproduction of sound from sound film records |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB353696A true GB353696A (en) | 1931-07-30 |
Family
ID=10180390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2250030A Expired GB353696A (en) | 1930-07-25 | 1930-07-25 | Improvements in the reproduction of sound from sound film records |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB353696A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2169123A (en) * | 1984-12-20 | 1986-07-02 | Drexler Tech | Laser recording apparatus with off-centre lens |
-
1930
- 1930-07-25 GB GB2250030A patent/GB353696A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2169123A (en) * | 1984-12-20 | 1986-07-02 | Drexler Tech | Laser recording apparatus with off-centre lens |
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