GB403956A - Improvements in or relating to continuous-feed motion picture apparatus provided with optical compensators - Google Patents
Improvements in or relating to continuous-feed motion picture apparatus provided with optical compensatorsInfo
- Publication number
- GB403956A GB403956A GB17997/32A GB1799732A GB403956A GB 403956 A GB403956 A GB 403956A GB 17997/32 A GB17997/32 A GB 17997/32A GB 1799732 A GB1799732 A GB 1799732A GB 403956 A GB403956 A GB 403956A
- Authority
- GB
- United Kingdom
- Prior art keywords
- axis
- members
- shaft
- parallel
- continuous
- 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
- G03B41/00—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor
- G03B41/02—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film
- G03B41/04—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film with optical compensator
- G03B41/08—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film with optical compensator with rotating transmitting member
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
- Variable Magnification In Projection-Type Copying Machines (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
- Studio Devices (AREA)
Abstract
403,956. Kinematograph apparatus. LEVENTHAL PATENTS, Inc., 175, Varick Street, New York, U.S.A.-(Assignees of Leventhal, J. F. ; 175, Varick Street, New York, U.S.A.) June 25, 1932, No. 17997. Convention date, June 25, 1931. [Class 97 (i).] In continuous-feed apparatus, optical compensation is effected, for each picture, in a number of stages, by means of a number of plane-parallel refracting members rotatable about a common axis, and a number of optical systems selectively rendered inoperative. As shown, plane-parallel refracting members 15, on a holder 14, are symmetrically arranged about the axis of a shaft 11, and are halfcovered with opaque material 16, so as each to co-operate with one of two fixed half lenses 23 having vertically spaced parallel axes. The shaft 11 is geared, by wheels 20, 19, to the axis of a feed sprocket 18 drawing the film F through a two-picture gate 21, the gearing being such that two members 15 rotate across the projection axis while the film moves through an image-height. The opaque coverings on the members 15 are alternately arranged, and the projection beam passes first through one member and the upper lens 23, and afterwards through the next member and the lower lens 23. A prism 24 reflects the projection beam parallel to the shaft 11.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US403956XA | 1931-06-25 | 1931-06-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB403956A true GB403956A (en) | 1933-12-27 |
Family
ID=21910755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17997/32A Expired GB403956A (en) | 1931-06-25 | 1932-06-25 | Improvements in or relating to continuous-feed motion picture apparatus provided with optical compensators |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE625632C (en) |
| FR (1) | FR739081A (en) |
| GB (1) | GB403956A (en) |
-
1932
- 1932-06-23 DE DEL81455D patent/DE625632C/en not_active Expired
- 1932-06-25 GB GB17997/32A patent/GB403956A/en not_active Expired
- 1932-06-25 FR FR739081D patent/FR739081A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR739081A (en) | 1933-01-05 |
| DE625632C (en) | 1936-02-13 |
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