Patent ID: 8232957

Claim:
A display system, comprising: a screen that comprises a substrate and parallel phosphor stripes formed on the substrate, wherein adjacent phosphor stripes are made of different phosphors that emit colored light of different colors by absorbing light at an excitation wavelength; a laser module to project and scan a laser beam at the excitation wavelength onto the screen to convert an image carried by the laser beam via an optical modulation into a color image produced by the phosphor stripes on the screen; an optical sensor module positioned to receive and detect colored light emitted from the phosphor stripes as a result of absorbing light at the excitation wavelength; a feedback mechanism that directs an electrical output of the optical sensor module to the laser module; and an alignment control mechanism in the laser module to respond to alignment information contained in the electrical output of the optical sensor module and to control a timing of image data modulated on the laser beam to correct an alignment of the laser beam with respect to the phosphor stripes.