BE437520A - - Google Patents
Info
- Publication number
- BE437520A BE437520A BE437520DA BE437520A BE 437520 A BE437520 A BE 437520A BE 437520D A BE437520D A BE 437520DA BE 437520 A BE437520 A BE 437520A
- Authority
- BE
- Belgium
- Prior art keywords
- projection
- luminous
- projected
- incandescent
- filament
- Prior art date
Links
- 238000000034 method Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 description 3
- 230000011664 signaling Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical group [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F19/00—Advertising or display means not otherwise provided for
- G09F19/12—Advertising or display means not otherwise provided for using special optical effects
- G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
Landscapes
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Marketing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE437520A true BE437520A (online.php) |
Family
ID=95938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE437520D BE437520A (online.php) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE437520A (online.php) |
-
0
- BE BE437520D patent/BE437520A/fr unknown
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