GB635290A - Optical system for sound film recording - Google Patents
Optical system for sound film recordingInfo
- Publication number
- GB635290A GB635290A GB15641/47A GB1564147A GB635290A GB 635290 A GB635290 A GB 635290A GB 15641/47 A GB15641/47 A GB 15641/47A GB 1564147 A GB1564147 A GB 1564147A GB 635290 A GB635290 A GB 635290A
- Authority
- GB
- United Kingdom
- Prior art keywords
- image
- source
- objective
- plane
- film
- 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
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B31/00—Associated working of cameras or projectors with sound-recording or sound-reproducing means
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/32—Details specially adapted for motion-picture projection
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
635,290. Optical systems. TOMLINS, F. C. (Western Electric Co., Inc.). June 13, 1947, No. 15641. [Class 97 (i)] [Also in Group XXXVIII] To improve the amount of light from an elongated source projected by an objective on to a film after passage through a light modulating device for sound recording a condenser lens assembly comprising crossed cylindrical lenses forms an image of the shorter dimension of the source at the light modulating device and a separate image of the longer dimension of the source beyond the device and preferably at the objective. As shown, the source has a coiled filament 2, an image of the shorter dimension of which is formed in the plane 8 of a ribbon light valve or other light modulating device by a pair of cylindrical lenses 9 and a cylindrical lens 11 with its cylinder axis perpendicular to those of the lenses 9, a mask 12 limiting the longer dimension of the beam, and an image of this mask is formed in the plane 6 of the film by the objective 4 at the front lens of which an image of the longer dimension of the filament is formed by the condensers. A small cylindrical lens 13 is arranged near the film to form an image of the plane 8 thereat. Specifications 347,261 and 398,257 are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB15641/47A GB635290A (en) | 1947-06-13 | 1947-06-13 | Optical system for sound film recording |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB15641/47A GB635290A (en) | 1947-06-13 | 1947-06-13 | Optical system for sound film recording |
Publications (1)
Publication Number | Publication Date |
---|---|
GB635290A true GB635290A (en) | 1950-04-05 |
Family
ID=10062804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB15641/47A Expired GB635290A (en) | 1947-06-13 | 1947-06-13 | Optical system for sound film recording |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB635290A (en) |
-
1947
- 1947-06-13 GB GB15641/47A patent/GB635290A/en not_active Expired
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