Patent ID: 7433108

Claim:
An image projection arrangement for projecting an image, comprising: a plurality of pulsable lasers for generating a plurality of pulsed constituent laser beams having respective fixed linear polarizations, one of the constituent laser beams having a fixed linear polarization that is orthogonal to the fixed linear polarization of the other of the constituent laser beams; an optical assembly for changing the orthogonal fixed linear polarization of the one constituent laser beam to be aligned with the fixed linear polarization of the other of the constituent laser beams, and for combining the plurality of the constituent laser beams into a composite main laser beam in which all the fixed linear polarizations are aligned; a polarized screen; a scanner for sweeping the main laser beam along mutually orthogonal scan directions to project a pattern of scan lines on the polarized screen, each scan line having a number of pixels; and a controller for pulsing the lasers to cause selected pixels to be illuminated, and rendered visible, to produce the image on the polarized screen to increase contrast of the illuminated pixels.