FR645861A - écran pour projections lumineuses - Google Patents
écran pour projections lumineusesInfo
- Publication number
- FR645861A FR645861A FR645861DA FR645861A FR 645861 A FR645861 A FR 645861A FR 645861D A FR645861D A FR 645861DA FR 645861 A FR645861 A FR 645861A
- Authority
- FR
- France
- Prior art keywords
- projection screen
- light projection
- light
- screen
- projection
- 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
- G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR645861T | 1927-12-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR645861A true FR645861A (fr) | 1928-11-03 |
Family
ID=9001007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR645861D Expired FR645861A (fr) | 1927-12-17 | 1927-12-17 | écran pour projections lumineuses |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR645861A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1184113B (de) * | 1957-03-16 | 1964-12-23 | Herbert Riedel | Aufrollbare Bildwerferwand |
-
1927
- 1927-12-17 FR FR645861D patent/FR645861A/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1184113B (de) * | 1957-03-16 | 1964-12-23 | Herbert Riedel | Aufrollbare Bildwerferwand |
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