Patent ID: 8675189

Claim:
A method for characterizing a primary radiant spectra of a projector, comprising: projecting primary colors with the projector that includes a lamp and color filters; measuring each primary color with a multi-band camera; receiving a priori information about the color filters, wherein the a priori information about the color filters includes information selected from the group consisting of limits on shapes of the color filters, limits on a stopband of each of the color filters, a fraction of total power outside a passband for each of the color filters, a transmission of each of the color filters, a range of sensitivity, and combinations thereof; estimating a spectra of the color filters using the measurements from the multi-band camera and the a priori information about the color filters; and estimating the primary radiant spectra of the projector using spectral data of the projector lamp and the estimated spectra of the color filters.