Can DigiLens™ Technology only be used with microdisplays?
The spectral bandwidth and fast switching capability of a DigiLens™ is ideally matched to the requirements of color sequential illumination for microdisplays. How is a DigiLens™ fabricated In its simplest form a SBG is a Bragg hologram recorded in a nanocomposite material called a Reactive Monomer Liquid Crystal Mix (RMLCM). During recording, the nanocomposite mixture undergoes phase separation, creating regions densely populated by liquid crystal micro-droplets, interspersed by regions of clear photopolymer resulting in a grating with very, high diffraction efficiency. Applying a voltage via ITO electrodes re-orientates the LC droplets, reducing the refractive index modulation. The resulting device called a DigiLens™ offers all of the usual benefits of a holographic optical element with the added benefit of fast switching. Applying a voltage effectively erases the optical properties. For more information, see Technology Backgrounder.
