System for displaying images from multiple projectors onto a common screen
First Claim
1. A projection display system comprising:
- a screen assembly including a display screen, said screen assembly having a center axis segmenting said screen assembly into a first segment and a second segment;
a first off-axis projector producing a first image directed via a first image path onto said first segment of said screen assembly, wherein said first image intersects said center axis at a substantially normal angle; and
a second off-axis projector producing a second image directed via a second image path onto said second segment of said screen assembly and interfacing said first image at said center axis, wherein said second image intersects said center axis at a substantially normal angle.
0 Assignments
0 Petitions
Accused Products
Abstract
A projection display system is provided having a first off-axis projector, a second off-axis projector and a screen assembly including a display screen. The screen assembly has a center axis segmenting the assembly into two segments. The first off-axis projector produces a first image that is directed via a first image path onto the first segment of the screen assembly and the second off-axis projector produces a second image that is directed via a second image path onto the second segment of the screen assembly. The second image interfaces the first image at the center axis of the screen assembly, both images intersecting the center axis at a substantially normal angle. The screen assembly may further include a Fresnel lens positioned in the first and second image paths adjacent to the display screen for receiving and straightening the first and second images. The first and second images are tiled across the entirety of the rear face of the screen assembly. The configuration of adjacent first and second off-axis projectors enables near perfect optical alignment of the first and second images, with the seam at the interface of the first and second images virtually indistinguishable to the viewer. An alternate embodiment of the system employs four off-axis projectors tiling four images across the rear face of a screen assembly in a similar manner.
100 Citations
21 Claims
-
1. A projection display system comprising:
-
a screen assembly including a display screen, said screen assembly having a center axis segmenting said screen assembly into a first segment and a second segment; a first off-axis projector producing a first image directed via a first image path onto said first segment of said screen assembly, wherein said first image intersects said center axis at a substantially normal angle; and a second off-axis projector producing a second image directed via a second image path onto said second segment of said screen assembly and interfacing said first image at said center axis, wherein said second image intersects said center axis at a substantially normal angle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A projection display system comprising:
-
a screen assembly including a display screen and a Fresnel lens, said screen assembly having a center axis segmenting said screen into a first segment and a second segment; a first off-axis projector positioned behind said screen assembly producing a first image directed via a first image path onto said first segment of said screen assembly, wherein said first image intersects said center axis at a substantially normal angle; and a second off-axis projector positioned behind said screen assembly producing a second image directed via a second image path onto said second segment of said screen assembly and interfacing said first image at said center axis, wherein said second image intersects said center axis at a substantially normal angle, and further wherein said Fresnel lens is positioned between said display screen and said first and second off-axis projectors in said first and second image paths. - View Dependent Claims (17, 18)
-
-
19. A projection display system comprising:
-
a screen assembly including a display screen and a Fresnel lens, said screen assembly having a vertical center axis and a horizontal center axis segmenting said screen assembly into a first quadrant, a second quadrant, a third quadrant and a fourth quadrant; a first off-axis projector producing a first image directed via a first image path onto said first quadrant, wherein said first image intersects said vertical and horizontal center axes at a substantially normal angle; a second off-axis projector producing a second image directed via a second image path onto said second quadrant and interfacing said first image at said vertical center axis, wherein said second image intersects said vertical and horizontal center axes at a substantially normal angle; a third off-axis projector producing a third image directed via a third image path onto said third quadrant, said third image intersecting said vertical and horizontal center axes at a substantially normal angle; and a fourth off-axis projector producing a fourth image directed via a fourth image path onto said fourth quadrant and interfacing said third image at said vertical center axis, said fourth image intersecting said vertical and horizontal center axes at a substantially normal angle, and further wherein said Fresnel lens is positioned between said display screen and said first, second, third and fourth off-axis projectors in said first, second, third and fourth image paths. - View Dependent Claims (20, 21)
-
Specification