Projection ring
US9477146B2 · kind B2 · utility
30Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2015 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Apr 21, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/0331
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a projection ring, including an annular body; a telescopic portion disposed on the annular body; and a projector disposed on the telescopic portion. The location of the projector on the projection ring is easily adjustable, thus it's convenient to adjust the size of the picture as projected or the projection angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.