BE506023A - - Google Patents
Info
- Publication number
- BE506023A BE506023A BE506023DA BE506023A BE 506023 A BE506023 A BE 506023A BE 506023D A BE506023D A BE 506023DA BE 506023 A BE506023 A BE 506023A
- Authority
- BE
- Belgium
- Prior art keywords
- film
- housing
- light
- passage channel
- walls
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 4
- 210000000614 Ribs Anatomy 0.000 claims 1
- 230000000875 corresponding Effects 0.000 description 2
- 206010047571 Visual impairment Diseases 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000003287 optical Effects 0.000 description 1
- 230000002093 peripheral Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000004393 visual impairment Effects 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE506023A true BE506023A (zh) |
Family
ID=146406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE506023D BE506023A (zh) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE506023A (zh) |
-
0
- BE BE506023D patent/BE506023A/fr unknown
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