GB374601A - Improvements in or relating to screens for displaying optically projected images or for use as sun-visors - Google Patents
Improvements in or relating to screens for displaying optically projected images or for use as sun-visorsInfo
- Publication number
- GB374601A GB374601A GB14274/31A GB1427431A GB374601A GB 374601 A GB374601 A GB 374601A GB 14274/31 A GB14274/31 A GB 14274/31A GB 1427431 A GB1427431 A GB 1427431A GB 374601 A GB374601 A GB 374601A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sheets
- screens
- coloured
- strips
- sun
- 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
- 239000011521 glass Substances 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- 239000002966 varnish Substances 0.000 abstract 2
- 229920002678 cellulose Polymers 0.000 abstract 1
- 239000001913 cellulose Substances 0.000 abstract 1
- 229920002301 cellulose acetate Polymers 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- IZRPKIZLIFYYKR-UHFFFAOYSA-N phenyltoloxamine Chemical compound CN(C)CCOC1=CC=CC=C1CC1=CC=CC=C1 IZRPKIZLIFYYKR-UHFFFAOYSA-N 0.000 abstract 1
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
- G03B21/62—Translucent screens
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
374,601. Sun visors; windows. ASTIMA, E., 19, Rue d'Antin, Paris. May 14, 1931, No. 14274. Convention date, May 14, 1930. [Class 20 (iii).] A sun visor or screen comprises transparent strips separated by opaque strips or coloured transparent strips ; such strips may be intersected by other coloured transparent strips. The visor may be made by assembling sheets 1 of cellulose acetate, cellulose hydrate, glass, or other transparent substance, with layers 2 of printers' ink or black varnish, or with thin opaque or coloured sheets of the same material as the sheets 1, between them, the sheets being sliced vertically as indicated by chain lines to form a number of screens. The screens thus produced may be assembled similarly to the sheets 1, and with layers 3 of coloured varnish or thin sheets of coloured transparent substance between them, and may be again sliced vertically to produce sheets as shown in Fig. 6. The rear faces of the sheets may be dulled or blackened, and the front faces may also be dulled. The screens may be fitted over window panes or may be used in place of glass.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR374601X | 1930-05-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB374601A true GB374601A (en) | 1932-06-16 |
Family
ID=8894911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14274/31A Expired GB374601A (en) | 1930-05-14 | 1931-05-14 | Improvements in or relating to screens for displaying optically projected images or for use as sun-visors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB374601A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4131366A (en) * | 1976-01-27 | 1978-12-26 | Forss Magnus R | Direction indicating device |
-
1931
- 1931-05-14 GB GB14274/31A patent/GB374601A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4131366A (en) * | 1976-01-27 | 1978-12-26 | Forss Magnus R | Direction indicating device |
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