Equipment and techniques for invisible seaming of multiple projection displays
AssigneeIMAX Corporation
InventorsKenneth T Baker, Matt Cowan
Life of this patent
Estimating the term…
Abstract
Apparatus and techniques for enhancing blending characteristics of a composite image formed by multiple projection displays are detailed. Included among the apparatuses and techniques is the use of masks, having complimentary, non-linear edges, between a projection axis and a screen. The masks are used to solve the geometric and photometric issues involved with blending sub-images to form a composite image.
Claims30
A projection system, comprising:
- at least one projection device having a first lens and a second lens, the projection device projecting a first sub-image through the first lens and a second sub-image through the second lens;
- a screen for displaying the first sub-image and the second sub-image;
- a first mask positioned between the first lens and the screen, the first mask having a first non-linear edge in an optical path of the first sub-image creating a first non-linear image edge;
- and
- a second mask positioned between the second lens and the screen, the second mask having a second non-linear edge, that is complimentary to the first mask, in an optical path of the second sub-image creating a second non-linear image edge complimentary to the first non-linear image edge,
- wherein the first sub-image and second sub-image are combined on the screen such that the first sub-image and the second sub-image overlap at the first non-linear image edge and the second non-linear image edge to form a seam.
A projection system, comprising:
- a first projection device having a first projection axis and including a first lens having a lens axis, the first projection device projecting a first sub-image through the first lens;
- a second projection device having a second projection axis and including a second lens-having a lens axis, the second projection device projecting a second sub-image through the second lens;
- a screen for displaying the first sub-image and the second sub-image;
- a first mask positioned between the first lens and the screen, the first mask having a first non-linear edge in the optical path of the first sub-image creating a first non-linear image edge;
- and
- a second mask positioned between the second lens and the screen, the second mask having a second non-linear edge, that is complimentary to the first mask, in the optical path of the second sub-image creating a second non-linear image edge complimentary to the first non-linear image edge,
- wherein the first sub-image is adjacent to the second sub-image on the screen such the first sub-image and the second sub-image overlap at the first non-linear image edge and the second non-linear image edge to form a seamed area.
A mask for use in a projection system, the projection system having at least one projection device and projecting two sub-images on a screen, the mask positioned between the projection device and the screen, the mask comprising:
- a non-linear edge that is placed in the optical path of one of the sub-images.
Dependencies are inferred from the claim text.