ASLM Multi-Display

Case ID:

This technology is a new method that illuminates digital micromirror device (DMD) with focusing, homogenous illumination with cone angle/numerical aperture/F-number configured to prevent contaminated light to enter incorrect pupils. The technology has one input pupil and multiple diffraction order pupils that produce a multi-display from just one projector.



Digital micromirror device (DMD) is an array of micromirror pixels that traditionally are an alternative between ON and OFF positions that direct towards or away from a projection lens for an image projection. Traditional DMD will run into issues where there is light contamination or where the chief ray-of-incidence design is not parallel. These issues can lead to significant diffraction ringing in transmission of light and can prevent high-quality projection.


This technology focuses on a new illumination method that mitigates the chance of light contamination to enter and works towards providing a higher quality of projection. The projection can replace the need of having multiple projectors. The technology can cover multiple projections on a screen which allow it to be used for various applications.



  • Projector
  • 3D Display that does not require 3D glasses
  • Angularly multiplex hologram
  • 3D printing
  • Light field projection


  • More efficient
  • Only need of one projector
  • High-quality projection
  • Lower the chance of light contamination
  • Lower cost
Patent Information:
Contact For More Information:
Richard Weite
Senior Licensing Manager, College of Optical Sciences
The University of Arizona
Lead Inventor(s):
Yuzuru Takashima
Brandon Hellman