GB477989A - Improvements in or relating to the recording of sound on cinematograph film - Google Patents
Improvements in or relating to the recording of sound on cinematograph filmInfo
- Publication number
- GB477989A GB477989A GB1581336A GB1581336A GB477989A GB 477989 A GB477989 A GB 477989A GB 1581336 A GB1581336 A GB 1581336A GB 1581336 A GB1581336 A GB 1581336A GB 477989 A GB477989 A GB 477989A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sound
- recording
- mirror
- piezo
- crystal
- 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
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
- G02B26/04—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light by periodically varying the intensity of light, e.g. using choppers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Optical Scanning Systems (AREA)
Abstract
477,989. Optical sound-recording apparatus; piezo-electric crystals. SCRUBY, B., and ROBERTS, A. J. June 5, 1936, No. 15813. [Classes 40 (iii) and 40 (v)] Relates to sound - recording apparatus of the kind employing two grids, the image of one of which (5) is reflected by a vibratory mirror on to the other grid, (9), as described in Specification 325,569, [Class 40 (ii)]. According to the invention, the mirror 6 is directly attached to the rochelle crystal 29 of a piezo-electric oscillator, which is connected to the output of an amplifier for the sound to be recorded. The crystal, which bends without twisting under the influence of potential applied to tin foil layers on its opposite sides, is preferably clamped between rubber blocks at its lower end and has the mirror attached to its upper end, e.g. by wax. The Figure shows the general arrangement of the apparatus for recording on 16 mm. film, driven by a sprocket 16 and controlled by a flywheel 20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1581336A GB477989A (en) | 1936-06-05 | 1936-06-05 | Improvements in or relating to the recording of sound on cinematograph film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1581336A GB477989A (en) | 1936-06-05 | 1936-06-05 | Improvements in or relating to the recording of sound on cinematograph film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB477989A true GB477989A (en) | 1938-01-05 |
Family
ID=10065947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1581336A Expired GB477989A (en) | 1936-06-05 | 1936-06-05 | Improvements in or relating to the recording of sound on cinematograph film |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB477989A (en) |
-
1936
- 1936-06-05 GB GB1581336A patent/GB477989A/en not_active Expired
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