Panoramic projection device, and method implemented by this device
US8272752B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 8, 2008 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | May 5, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B37/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A projection device (1) includes: a projector (2) adapted for projecting a mother image along a projection axis (11); and a convex mirror adapted for at least partially reflecting the mother image and projecting it onto a three-dimensional environment (7, 8a, 8b) such as the ground, a ceiling, one or more side walls and the content of a room. When combining the projector with a convex mirror, the mother image can for example be projected into a solid angle higher than 2π steradians (i.e. a half-sphere), or even substantially equal to or slightly lower than 4π steradians (i.e. a sphere). A method implemented by the device is also described. The field of the invention is particularly that of video projectors for virtual or mixed reality applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.