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 2? steradians (i.e. a half-sphere), or even substantially equal to or slightly lower than 4? 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.
Type:
Grant
Filed:
August 8, 2008
Date of Patent:
September 25, 2012
Assignees:
Universite Clermont 1, MB Optique
Inventors:
Robert Andre Marcel Stehle, Michael Bray, Laurent Sarry, Eric Zeghers
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 2? steradians (i.e. a half-sphere), or even substantially equal to or slightly lower than 4? 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.
Type:
Application
Filed:
August 8, 2008
Publication date:
September 1, 2011
Applicants:
UNIVERSITE CLERMONT 1, MB OPTIQUE
Inventors:
Robert Andre Marcel Stehle, Michael Bray, Laurent Sarry, Eric Zeghers