DE2129249C3 - - Google Patents
Info
- Publication number
- DE2129249C3 DE2129249C3 DE2129249A DE2129249A DE2129249C3 DE 2129249 C3 DE2129249 C3 DE 2129249C3 DE 2129249 A DE2129249 A DE 2129249A DE 2129249 A DE2129249 A DE 2129249A DE 2129249 C3 DE2129249 C3 DE 2129249C3
- Authority
- DE
- Germany
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/10—Projectors with built-in or built-on screen
- G03B21/11—Projectors with built-in or built-on screen for microfilm reading
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lenses (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Projection Apparatus (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US4511270A | 1970-06-10 | 1970-06-10 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2129249A1 DE2129249A1 (de) | 1971-12-16 |
| DE2129249B2 DE2129249B2 (de) | 1974-07-25 |
| DE2129249C3 true DE2129249C3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1975-03-20 |
Family
ID=21936060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2129249A Granted DE2129249B2 (de) | 1970-06-10 | 1971-06-09 | Tragbares kompaktes Lesegerät |
Country Status (5)
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3937948A (en) * | 1974-08-14 | 1976-02-10 | Donn Allison | Light fixture |
| US3941467A (en) * | 1974-10-29 | 1976-03-02 | Kaptron, Inc. | Optical projector/reader |
| IN149132B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1976-09-13 | 1981-09-19 | Izon Corp | |
| US4126387A (en) * | 1976-12-27 | 1978-11-21 | Broome Barry G | Microform reader |
| US4141625A (en) * | 1977-11-28 | 1979-02-27 | Northern Telecom Limited | Optical system for multiple imaging a linear object |
| US4247185A (en) * | 1978-11-14 | 1981-01-27 | Margolin George D | Microform reader |
| US4362361A (en) * | 1980-09-15 | 1982-12-07 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Collimated beam manifold with the number of output beams variable at a given output angle |
| US4451148A (en) * | 1982-02-16 | 1984-05-29 | The Charles Stark Draper Laboratory, Inc. | Optical angular interval marker |
| JPS60208725A (ja) * | 1984-04-03 | 1985-10-21 | Hiroyoshi Mori | 偏・集光装置 |
| DE8634789U1 (de) * | 1986-12-29 | 1987-03-12 | Minox Gmbh, 6300 Giessen | Abdeckung für Mikrofilmbild - Lesegerät |
| GB8804402D0 (en) * | 1988-02-25 | 1988-03-23 | Emi Plc Thorn | Display device |
| GB2285140B (en) * | 1993-12-24 | 1997-02-26 | Projectron Limited | Hand-held microfilm readers |
| FR2732783B1 (fr) * | 1995-04-07 | 1997-05-16 | Thomson Csf | Dispositif compact de retroprojection |
| EP0887682A4 (en) * | 1996-11-19 | 1999-11-17 | Sony Corp | DISPLAY DEVICE |
| GB2360603A (en) * | 2000-03-20 | 2001-09-26 | Cambridge 3D Display Ltd | Planar optical waveguide and float glass process |
| GB0511783D0 (en) * | 2005-06-10 | 2005-07-20 | Anderson John E | Directing electromagnetic energy from an area or volume source |
| JP2016180871A (ja) * | 2015-03-24 | 2016-10-13 | 矢崎総業株式会社 | 光学デバイス |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR400182A (fr) * | 1908-05-23 | 1909-07-20 | Georges Leo Henri Aubert | Système de projection de vues animées ou fixes |
| US2303113A (en) * | 1939-12-30 | 1942-11-24 | Arthur F Eckel | Reflector |
| US2726573A (en) * | 1950-08-30 | 1955-12-13 | Rca Corp | Rear projection viewing screen |
| GB898007A (en) * | 1957-12-24 | 1962-06-06 | Laubman & Pank Ltd | Improvements in or relating to optical magnifying systems |
-
1970
- 1970-06-10 US US00045112A patent/US3711188A/en not_active Expired - Lifetime
-
1971
- 1971-06-09 GB GB1968071*[A patent/GB1338638A/en not_active Expired
- 1971-06-09 CA CA115,208A patent/CA960493A/en not_active Expired
- 1971-06-09 DE DE2129249A patent/DE2129249B2/de active Granted
- 1971-06-09 FR FR7120946A patent/FR2094166B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2094166B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1975-08-22 |
| CA960493A (en) | 1975-01-07 |
| DE2129249B2 (de) | 1974-07-25 |
| DE2129249A1 (de) | 1971-12-16 |
| GB1338638A (en) | 1973-11-28 |
| US3711188A (en) | 1973-01-16 |
| FR2094166A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-02-04 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| E77 | Valid patent as to the heymanns-index 1977 | ||
| EHJ | Ceased/non-payment of the annual fee |