GB415177A - Improved equipment for the recording of sound on talking picture films - Google Patents
Improved equipment for the recording of sound on talking picture filmsInfo
- Publication number
- GB415177A GB415177A GB847933A GB847933A GB415177A GB 415177 A GB415177 A GB 415177A GB 847933 A GB847933 A GB 847933A GB 847933 A GB847933 A GB 847933A GB 415177 A GB415177 A GB 415177A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lens
- sound
- film
- image
- 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
- 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
- Special Spraying Apparatus (AREA)
Abstract
415,177. Optical sound - recording apparatus. DALL, H. E., 186, Dunstable Road, Luton. March 21, 1933, No. 8479. [Class 40 (ii).] In optical sound-recording apparatus employing a sound-modulated glow lamp 4 the light is concentrated in a fine line on the film 5 by a very small cylindrical lens 7 having a focal length not greater than twelve times the width of the image produced on the film, the lens being mounted in a casing 3 which also holds in fixed or adjustable relation to the lens a diaphragm 2. This has formed in it a rectangular aperture which is narrower than the source of light and is directly illuminated by it. The interior of the casing 3 is preferably ridged and blackened to prevent internal reflection. The lens is held in a slotlike recess in a holder 8, Fig. 3, with its axis transverse to the film. Using a system in accordance with the invention, the ratio of the brilliance of the image to the linear spread of light due to aberrations of the lens is a practical maximum. A suitable focal length is about ten times the width of the image, which may be À001". In a modification, the rectangular aperture is formed between two spring strips, the position of which may be adjusted by means of a nut, co-operating with a scale.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB847933A GB415177A (en) | 1933-03-21 | 1933-03-21 | Improved equipment for the recording of sound on talking picture films |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB847933A GB415177A (en) | 1933-03-21 | 1933-03-21 | Improved equipment for the recording of sound on talking picture films |
Publications (1)
Publication Number | Publication Date |
---|---|
GB415177A true GB415177A (en) | 1934-08-23 |
Family
ID=9853247
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB847933A Expired GB415177A (en) | 1933-03-21 | 1933-03-21 | Improved equipment for the recording of sound on talking picture films |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB415177A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2443004A (en) * | 1946-03-22 | 1948-06-08 | Curtis Helene Ind Inc | Slit lens for sound reproduction apparatus |
US4528654A (en) * | 1979-10-01 | 1985-07-09 | Bogey B.V. | Dustproof case for an optical information tape including a clamping lens |
US4581729A (en) * | 1979-10-01 | 1986-04-08 | Bogey B.V. | Case containing optically readable carrier structure and apparatus for using same |
-
1933
- 1933-03-21 GB GB847933A patent/GB415177A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2443004A (en) * | 1946-03-22 | 1948-06-08 | Curtis Helene Ind Inc | Slit lens for sound reproduction apparatus |
US4528654A (en) * | 1979-10-01 | 1985-07-09 | Bogey B.V. | Dustproof case for an optical information tape including a clamping lens |
US4581729A (en) * | 1979-10-01 | 1986-04-08 | Bogey B.V. | Case containing optically readable carrier structure and apparatus for using same |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB415177A (en) | Improved equipment for the recording of sound on talking picture films | |
GB907255A (en) | Improvements in or relating to reflex cameras | |
GB1278485A (en) | Method and apparatus for visualising a phase object | |
US2047244A (en) | Optical system | |
GB570022A (en) | A projection system for the inspection of internal surfaces | |
GB820215A (en) | Improvements relating to microscopes and microprojectors | |
SU605194A1 (en) | Device for adjusting motion picture and still-life cameras | |
GB874417A (en) | Microscope comprising a beam-splitter for the simultaneous imaging of an object in several equivalent image planes | |
GB361555A (en) | Illuminating device for use in the reproduction of sounds recorded on films | |
ES444923A1 (en) | Device for observing narrow films. (Machine-translation by Google Translate, not legally binding) | |
GB354876A (en) | Improvements in optical devices for reproducing sound from film records | |
GB1107945A (en) | Improvements relating to indicating instruments | |
SU664141A1 (en) | Objective for microscope | |
GB618376A (en) | Improvements in or relating to collimators | |
GB461259A (en) | Improvements in or relating to optical systems for use in recording and reproducing sound on films | |
Marion | A mirror thermometer | |
GB470120A (en) | Improvements in and relating to optical projection apparatus | |
GB405612A (en) | Improvements in or connected with multiple objective cameras | |
GB323372A (en) | Improvements in and relating to optical projection apparatus | |
GB424042A (en) | Improvements in making sound records photographically | |
GB830954A (en) | Improvements in and relating to photographic projection printers | |
GB716393A (en) | Improvements in or relating to optical projection apparatus for viewing microphotographs | |
GB370422A (en) | Improvements in or relating to methods of and devices for sound reproduction | |
GB368557A (en) | Improvements in apparatus for reproducing sound recorded on films | |
GB428694A (en) | Improvements in or in connection with optical magnifying apparatus |