BE690975A - - Google Patents
Info
- Publication number
- BE690975A BE690975A BE690975DA BE690975A BE 690975 A BE690975 A BE 690975A BE 690975D A BE690975D A BE 690975DA BE 690975 A BE690975 A BE 690975A
- Authority
- BE
- Belgium
Links
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
- G03B23/00—Devices for changing pictures in viewing apparatus or projectors
-
- 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
- G03B21/001—Slide projectors
-
- 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
- G03B21/14—Details
- G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
- Overhead Projectors And Projection Screens (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB84938A DE1261337B (de) | 1965-12-11 | 1965-12-11 | Vorrichtung zum Scharfeinstellen von Diaprojektoren |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE690975A true BE690975A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1967-05-16 |
Family
ID=6982674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE690975D BE690975A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1965-12-11 | 1966-12-09 |
Country Status (6)
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5537168A (en) * | 1991-04-26 | 1996-07-16 | Canon Kabushiki Kaisha | Projection optical apparatus comprising automatic adjustment unit |
| EP0519650B1 (en) * | 1991-06-14 | 1997-09-10 | Canon Kabushiki Kaisha | Projection apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE618823C (de) * | 1935-09-16 | Franz Paul Wimmer | Bildhalter fuer Projektionsapparate | |
| FR1224422A (fr) * | 1959-05-05 | 1960-06-23 | Kamera & Kinowerke Dresden Veb | Châssis de coulissement des diapositives pour appareils de projection |
| DE3664142D1 (en) * | 1986-02-21 | 1989-08-03 | Rolf Scheiwiller | Building set for the erection of walls |
-
1965
- 1965-12-11 DE DEB84938A patent/DE1261337B/de active Pending
-
1966
- 1966-12-05 US US599170A patent/US3414352A/en not_active Expired - Lifetime
- 1966-12-08 FR FR86741A patent/FR1503452A/fr not_active Expired
- 1966-12-08 GB GB55051/66A patent/GB1121820A/en not_active Expired
- 1966-12-09 BE BE690975D patent/BE690975A/xx unknown
- 1966-12-09 AT AT1133266A patent/AT265698B/de active
Also Published As
| Publication number | Publication date |
|---|---|
| GB1121820A (en) | 1968-07-31 |
| AT265698B (de) | 1968-10-25 |
| DE1261337B (de) | 1968-02-15 |
| US3414352A (en) | 1968-12-03 |
| FR1503452A (fr) | 1967-11-24 |