DE281954C - - Google Patents
Info
- Publication number
- DE281954C DE281954C DENDAT281954D DE281954DA DE281954C DE 281954 C DE281954 C DE 281954C DE NDAT281954 D DENDAT281954 D DE NDAT281954D DE 281954D A DE281954D A DE 281954DA DE 281954 C DE281954 C DE 281954C
- Authority
- DE
- Germany
- Prior art keywords
- glass beads
- projection
- projection screens
- present
- screens
- 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
- 241000031711 Cytophagaceae Species 0.000 claims 1
- 239000011324 bead Substances 0.000 description 6
- 239000011521 glass Substances 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 239000005338 frosted glass Substances 0.000 description 2
- 241000006351 Leucophyllum frutescens Species 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- -1 canvas Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 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
- G03B21/602—Lenticular screens
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Printing Plates And Materials Therefor (AREA)
- Printing Methods (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE281954C true DE281954C (enrdf_load_stackoverflow) | 1900-01-01 |
Family
ID=537648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT281954D Expired DE281954C (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE281954C (enrdf_load_stackoverflow) |
-
0
- DE DENDAT281954D patent/DE281954C/de not_active Expired
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