GB117053A - Improvements in Screens for Cinematograph Pictures and the like. - Google Patents
Improvements in Screens for Cinematograph Pictures and the like.Info
- Publication number
- GB117053A GB117053A GB451818A GB451818A GB117053A GB 117053 A GB117053 A GB 117053A GB 451818 A GB451818 A GB 451818A GB 451818 A GB451818 A GB 451818A GB 117053 A GB117053 A GB 117053A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screens
- pictures
- screen
- cinematograph
- cinematograph pictures
- 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
- G03B21/606—Projection screens characterised by the nature of the surface for relief projection
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
117,053. Heale, F., and Bryant, G. W. March 14, 1918. Optical - projection apparatus. - A screen for kinematograph pictures &c. said to give a stereoscopic effect consists of a plaster or fabric screen silvered on the face and arrayed behind two separate veiling screens of fine mesh netting or the like silvened on the front and blackened at the back, all three screens being spaced apart.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB451818A GB117053A (en) | 1918-03-14 | 1918-03-14 | Improvements in Screens for Cinematograph Pictures and the like. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB451818A GB117053A (en) | 1918-03-14 | 1918-03-14 | Improvements in Screens for Cinematograph Pictures and the like. |
Publications (1)
Publication Number | Publication Date |
---|---|
GB117053A true GB117053A (en) | 1918-07-04 |
Family
ID=32670189
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB451818A Expired GB117053A (en) | 1918-03-14 | 1918-03-14 | Improvements in Screens for Cinematograph Pictures and the like. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB117053A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3678394A (en) * | 1969-03-24 | 1972-07-18 | Siemens Ag | Superheterodyne receiver with automatic tuning to a reception frequency |
-
1918
- 1918-03-14 GB GB451818A patent/GB117053A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3678394A (en) * | 1969-03-24 | 1972-07-18 | Siemens Ag | Superheterodyne receiver with automatic tuning to a reception frequency |
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