Patent ID: 7628493

Claim:
A projection system, comprising: a display apparatus comprising a plurality of tunable Fabry-Perot filters, each of the filters being configured for shifting between a state in which the filter transmits radiation in a bandwidth in the visible range of the electromagnetic spectrum and a state in which the filter transmits radiation in a bandwidth outside the visible range of the electromagnetic spectrum; an illuminator which provides light to the plurality of Fabry-Perot filters; a control system which receives image data and controls the display apparatus to project an image onto an associated display surface, the control system comprising a modulator which: provides wavelength modulation signals to the plurality of Fabry-Perot filters to modulate a color of pixels in the image; and causes selected ones of the Fabry-Perot filters to shift into the bandwidth outside the visible range to modulate the brightness of pixels in the image.