Patent ID: 8189122

Claim:
A method for automatic color wheel calibration in a projector, the color wheel including three primary colors and a non-primary color, said method comprising: (A) enabling the projector to project the non-primary color of the color wheel, and measuring, by a color meter, first optical physical amounts X r , Y r and Z r of the projected non-primary color; (B) enabling the projector to project a color formed by a combination of the three primary colors of the color wheel which have respective color level values R n , G n , and B n , and measuring, by the color meter, second optical physical amounts X m , Y m , and Z m of the projected color of the combination; (C) determining, by a computer device, difference values ΔX, ΔY and ΔZ of respective differences between the first optical physical amounts X r , Y r and Z r and the second optical physical amounts X m , Y m , and Z m , adjusting, by the computer device, the respective color level values R n , G n , B n of the three primary colors; and (D) repeating steps (B) and (C) until the computer device determines that each of the difference values ΔX, ΔY and ΔZ approximates zero.