System and method for projection systems using sequential color techniques
AssigneeTexas Instruments Incorporated
InventorGregory S. Pettitt
Life of this patent
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Abstract
A projection system using a sequential color filter is provided. The sequential color filter utilizes various colors, such as red, blue, and green, divided into segments to produce images. Each color may be divided into two or more segments and arranged such that high sequential color rates may be obtained to help reduce the rainbow effect. The colors may be arranged such that the sequential color filter is symmetrical in the sense that the sequential color filter is divided into approximately equal regions wherein each region has approximately an equal amount of respective colors.
Claims20
A color filter wheel comprising:
- a first region;
- and
- a second region separated from the first region by a boundary between adjacent filter segments in the first region and the second region such that the second region has an equal size as the first region, the first region and the second region each including one or more segments of a first color and one or more segments of a second color, the first region and the second region having different numbers of segments of the first color and different numbers of segments of the second color, and wherein no filter segment has the same color as an adjacent filter segment sharing a common border.
A method of forming an image, the method comprising:
- transmitting a light through a color filter wheel generating a filtered light, the color filter wheel having a first region and a second region, the first region being equal in size to the second region and separated from the second region by a boundary between adjacent filter segments in the first region, the first region and the second region each including one or more segments of a first color, one or more segments of a second color, and one or more segments of a third color, the number of segments of at least one of the colors being different in the first region than the second region, and wherein no filter segment has the same color as an adjacent filter segment sharing a common border;
- and
- generating an image with the filtered light.
A projection system comprising:
- a light source configured to emit a beam of light;
- a color filter wheel positioned in a path of the beam, the color filter wheel having a first region and a second region, the first region being equal in size to the second region and separated by a boundary between adjacent filter segments in the first region and the second region, each region having a first color, a second color, and a third color, the first region having one segment of the first color and the second region having two segments of the first color, the second region having one segment of the second color and the first region having two segments of the second color, and wherein no filter segment has the same color as an adjacent filter segment sharing a common border.
Dependencies are inferred from the claim text.