Patent ID: 8864313

Claim:
A display apparatus comprising: at least one color channel providing a modulated light for each of a plurality of image frames, wherein an image frame is a single image formed by the modulated light, each color channel including: one or more laser sources that provide a polarized illumination beam; and an imaging modulator in the path of the illumination beam actuable to modulate light in the illumination beam and direct the modulated light toward a projection lens; and a laser blanking apparatus in the path of the modulated light from the imaging modulator and disposed to block stray light from optical components of the display system during time intervals between successive image frames, the laser blanking apparatus including: a light polarization modulator that is synchronously timed to control the polarization of the modulated light to provide light having only a first polarization during all image frame time intervals and light having only a second polarization orthogonal to the first polarization during the time intervals between image frames; and an analyzer having a polarization transmission axis that transmits light from the polarization modulator of the first polarization thereby transmitting the image frames and does not transmit light from the polarization modulator of the second polarization thereby blocking the stray light.