BE348312A - - Google Patents
Info
- Publication number
- BE348312A BE348312A BE348312DA BE348312A BE 348312 A BE348312 A BE 348312A BE 348312D A BE348312D A BE 348312DA BE 348312 A BE348312 A BE 348312A
- Authority
- BE
- Belgium
- Prior art keywords
- screen
- filaments
- cinematographic
- way
- sound
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 4
- 238000009987 spinning Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims 1
- 238000012986 modification Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229920000914 Metallic fiber Polymers 0.000 description 2
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000005507 spraying Methods 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
- G03B21/565—Screens allowing free passage of sound
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Building Environments (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE348312A true BE348312A (OSRAM) |
Family
ID=23826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE348312D BE348312A (OSRAM) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE348312A (OSRAM) |
-
0
- BE BE348312D patent/BE348312A/fr unknown
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