BE546173A - - Google Patents
Info
- Publication number
- BE546173A BE546173A BE546173DA BE546173A BE 546173 A BE546173 A BE 546173A BE 546173D A BE546173D A BE 546173DA BE 546173 A BE546173 A BE 546173A
- Authority
- BE
- Belgium
- Prior art keywords
- screen
- light
- translucent
- opaque
- absorbing layer
- Prior art date
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE546173A true BE546173A (esLanguage) |
Family
ID=173567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE546173D BE546173A (esLanguage) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE546173A (esLanguage) |
-
0
- BE BE546173D patent/BE546173A/fr unknown
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