Projection of overlapping sub-frames onto a surface using light sources with different spectral distributions

A system for displaying an image, the system comprising:

• a buffer adapted to receive image data for the image;
• a sub-frame generator configured to define first, second, and third sub-frames corresponding to the image data;
• a first projection device adapted to project the first sub-frame onto a target surface using a first projection lens and a first light source;
• a second projection device separate and distinct from the first projection device adapted to project the second sub-frame onto the target surface using a second projection lens and a second light source with substantially different spectral characteristics than the first light source, wherein the second sub-frame at least partially overlaps the first sub-frame;
• and
• a third projection device separate and distinct from the first and second projection devices adapted to project the third sub-frame onto the target surface using a third projection lens and a third light source with substantially different spectral characteristics than the first and second light sources.

A system for projecting low-resolution sub-frames onto a viewing surface at spatially offset positions to generate the appearance of a high-resolution image, the system comprising:

• means for receiving a first high-resolution image;
• means for generating a first plurality of low-resolution sub-frames based on the first high-resolution image;
• first means for generating a first color of light for projecting a first one of the sub-frames using a first projection lens;
• second means for generating a second color of light for projecting a second one of the sub-frames using a second projection lens;
• third means for generating a third color of light for projecting a third one of the sub-frames using a third projection lens;
• and
• wherein the first means generates more energy for the first color of light than the second means is capable of generating, and the second means generates more energy for the second color of light than the first means is capable of generating, and wherein the third means generates more energy for the third color of light than the first and second means are capable of generating.

A method of displaying an image with a display system, the method comprising:

• receiving image data for the image;
• generating a first sub-frame and a second sub-frame corresponding to the image data;
• projecting the first sub-frame onto a target surface using a first projector light source;
• and
• projecting the second sub-frame onto the target surface using a second projector light source, wherein the first and the second sub-frames at least partially overlap on the target surface, and wherein the first and the second light sources have substantially different spectral distributions, and wherein the first and second light sources are a same type of light source, and wherein the substantially different spectral distributions are generated by operating the first and second light sources at different temperatures, thereby shifting the spectral distribution of at least one of the first and the second light sources.

A system for displaying an image, the system comprising:

• a buffer adapted to receive image data for the image;
• a sub-frame generator configured to define first and second sub-frames corresponding to the image data;
• a first projection device adapted to project the first sub-frame onto a target surface using a first light source;
• and
• a second projection device adapted to project the second sub-frame onto the target surface using a second light source with substantially different spectral characteristics than the first light source, wherein the second sub-frame at least partially overlaps the first sub-frame, and wherein the first and second light sources are a same type of light source, and wherein the substantially different spectral characteristics are provided by operating the first and second light sources at different temperatures, thereby shifting the spectral characteristics of at least one of the first and the second light sources.