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Reflective microelectrical mechanical structure (MEMS) optical modulator and optical display system

  • US 20030164814A1
  • Filed: 03/01/2002
  • Published: 09/04/2003
  • Est. Priority Date: 03/01/2002
  • Status: Active Grant
First Claim
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1. A microelectrical mechanical optical display system, comprising:

  • an illumination source that provides illumination light;

    a collimating lens that receives and collimates the illumination light;

    a microlens array having an array of plural lenslets and receiving the illumination light from the collimating lens;

    an aperture plate through which plural pixel apertures extend, the plural pixel apertures being aligned with and receiving the illumination light from the plural lenslets of the microlens array;

    a microelectrical mechanical reflector array positioned opposite the aperture plate from the microlens array, the microelectrical mechanical reflector array including plural microelectrical mechanical actuators that support reflectors in alignment with the plural pixel apertures to receive and reflect the illumination light, the plural microelectrical mechanical actuators orienting the reflectors selectively to direct the illumination light back through the pixel apertures or against the aperture plate; and

    a display screen that receives the illumination light passing the microelectrical mechanical optical modulator.

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