Light reflecting three-dimensional display system
Abstract
A display system (10) receives from a light source (12) a sequence of images, each representing a different depth plane of a subject, and selectively reflects each image from its corresponding one of plurallight direction modulators (16 and 18) to synthesize a three-dimensional image of the subject. Each modulator is positioned along an axis (20) at a location that corresponds to a different depth plane. Each modulator reflects the first Image incident to it and transmits the succeeding images in the sequence. In a display system having N+1 depth plane images, each of N modulators comprises a variable optical retarder (34) and a liquid crystal chiral cell (36). The N modulators reflect left-circularly polarized light and transmit right-circularly polarized light. An N+1 modulator preferably comprises a liquid crystal chiral cell and reflects light incident to it. An alternative embodiment (50) develops full color images.

Term
Term ended
Projected expiry passed 11 March 2006, 20.5 years ago.
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- Filed
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1 sheet
Sheet 1
Every citation, both ways
| Document | Relation | Office | Category | Cited during |
|---|---|---|---|---|
| US4127322A | Cites | United States of America | A | Search report |
| US4190856A | Cites | United States of America | AD | Search report |
| US4472737A | Cites | United States of America | A | Search report |
5 members in 4 offices
Priority claims4
| Document | Office | Kind | Date |
|---|---|---|---|
| 711792 | United States of America | – | |
| 71179285 | United States of America | A | |
| 711792 | – | – | – |
| US19850711792 | – | – | – |
Members5
| Document | Office | Kind | |
|---|---|---|---|
| JPS61212821A | Japan | A | |
| EP0195584A2 | European Patent Office (EPO) | A2 | |
| US4670744A | United States of America | A | |
| EP0195584A3This record | European Patent Office (EPO) | A3 | |
| CA1257025A | Canada | A |
9 legal events, as the office reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | |
|---|---|---|
| Information on inventor provided before grant (corrected)RIN1 | RIN1 | |
| Application withdrawn (corrected)WithdrawnR18W | R18W | |
| Application withdrawnWithdrawn18W | 18W | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION HAS BEEN WITHDRAWNSTAA | STAA | |
| Request for examination filed17P | 17P | |
| Designated contracting statesAK | AK | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | |
| Designated contracting statesAK | AK | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI |
Numbers
- Publication
- 0195584
- Publication, DOCDB
- 0195584
- Publication, EPODOC
- EP0195584
- Application
- 86301756
- Application, DOCDB
- 86301756
- Application, EPODOC
- EP19860301756
Titles3
- English
- Light reflecting three-dimensional display system
- French
- Système d'affichage réfléchissant à trois dimensions
- German
- Lichtreflektierendes dreidimensionales Anzeigesystem
Classification
- CPC, 11
- G09G3/003
- G02B30/24
- G02B30/52
- G02F1/13471
- G02F1/13473
- G02F2201/343
- G02F2203/02
- H04N13/324
- H04N13/337
- H04N13/395
- H04N13/398
- IPC, 7
- G02B27 22
- G02F1 13
- G02F1 1347
- G09F9 00
- G09F9 35
- G09F9 46
- H04N13 00
Designated states6
- Contracting states, 6
- Germany
- France
- United Kingdom
- Italy
- Netherlands (Kingdom of the)
- Sweden