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US 7,070,286 B2Granted
Projector with projection lens having a zoom function
AssigneeSeiko Epson Corporation
InventorFumio Koyama
Life of this patent
Estimating the term…
Abstract
A projector in accordance with the invention includes a projection lens having a zoom function that forms a projected image corresponding to an image signal on a screen, a zoom state detection section that detects a zoom state of the projection lens, and an uneven color correction section that performs uneven color correction on the image signal based on a detected zoom state.
Claims7
A projector for use with a screen, comprising:
- a projection lens having a zoom function that forms a projected image, corresponding to an image signal, on the screen;
- a zoom state detection section that detects a zoom state of the projection lens;
- and
- an uneven color correction section that performs uneven color correction on the image signal based on the zoom state detected by said zoom state detection section.
1 more element
A method of correcting uneven color of a projector that forms a projected image corresponding to an image signal on a screen by a projection lens having a zoom function, the method comprising:
- detecting a zoom state of the projection lens;
- and
- performing uneven color correction on the image signal in accordance with the detected zoom state of the projection lens.
Dependencies are inferred from the claim text.