BE362349A - - Google Patents
Info
- Publication number
- BE362349A BE362349A BE362349DA BE362349A BE 362349 A BE362349 A BE 362349A BE 362349D A BE362349D A BE 362349DA BE 362349 A BE362349 A BE 362349A
- Authority
- BE
- Belgium
- Prior art keywords
- opening
- characters
- frame
- projection
- movable frame
- Prior art date
Links
- 230000003287 optical Effects 0.000 claims description 15
- 230000002441 reversible Effects 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 10
- 241001465382 Physalis alkekengi Species 0.000 description 5
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 230000000284 resting Effects 0.000 description 2
- 101700051812 PPA1 Proteins 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE362349A true BE362349A (de) |
Family
ID=35271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE362349D BE362349A (de) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE362349A (de) |
-
0
- BE BE362349D patent/BE362349A/fr unknown
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