FR864139A - écran de projection - Google Patents
écran de projectionInfo
- Publication number
- FR864139A FR864139A FR864139DA FR864139A FR 864139 A FR864139 A FR 864139A FR 864139D A FR864139D A FR 864139DA FR 864139 A FR864139 A FR 864139A
- Authority
- FR
- France
- Prior art keywords
- projection screen
- projection
- screen
- 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
- G03B21/62—Translucent screens
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Laminated Bodies (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US540567XA | 1939-03-18 | 1939-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR864139A true FR864139A (fr) | 1941-04-19 |
Family
ID=21988487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR864139D Expired FR864139A (fr) | 1939-03-18 | 1940-03-18 | écran de projection |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR864139A (fr) |
| GB (1) | GB540567A (fr) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2201467C3 (de) * | 1972-01-13 | 1981-08-20 | Mechanische Weberei Gmbh, 4792 Bad Lippspringe | Projektionsschirm für Durchprojektion |
| US4068922A (en) * | 1976-10-01 | 1978-01-17 | The Singer Company | Front projection screen |
| JPH02199444A (ja) * | 1989-01-30 | 1990-08-07 | Matsushita Electric Ind Co Ltd | 透過型スクリーンとその製造方法とそれを用いた透過型プロジェクションテレビ |
| EP0627638A1 (fr) * | 1993-06-02 | 1994-12-07 | Hughes Aircraft Company | Diffuseur elliptique |
| US5932342A (en) * | 1996-11-14 | 1999-08-03 | Nashua Corporation | Optical diffusers obtained by fluid phase mixing of incompatible materials |
| GB2428307A (en) * | 2005-07-09 | 2007-01-24 | Ncast Ltd | Rear projecton screen |
-
1940
- 1940-03-18 FR FR864139D patent/FR864139A/fr not_active Expired
- 1940-03-18 GB GB5002/40A patent/GB540567A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB540567A (en) | 1941-10-22 |
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