Patents

OptiGrate designs and manufactures volume diffractive gratings in reflecting and transmitting geometries for commercial and defense applications. The basic technology of hologram recording in a photosensitive glass is protected by six issued U.S. patents and several pending patents.

Issued Patents

• 6,586,141
  Process for Production of High Efficiency Volume Diffractive Elements in Photo-Thermo-Refractive Glass
  
  
• 6,673,497
  High Efficiency Volume Diffractive Elements in Photo-Thermo-Refractive Glass
  
  
• 7,324,286
  Optical Beam Steering and Switching by Optically Controlled Liquid Crystal Spatial Light Modulator with Angular magnification by High Efficiency PTR Bragg Gratings
  
  
• 7,326,500
  Sensitization of Photo-Thermo-Refractive Glass to Visible Radiation by Two-Step Illumination
  
  
• 7,394,842
  Volume Bragg Lasers Based on High Efficiency Diffractive Elements in Photo-Thermo-Refractive Glass
  
  
• 7,424,185
  Stretching and Compression of Laser Pulses by Means of High Efficiency Volume Diffractive Gratings with Variable Periods in
  Photo-Thermo-Refractive Glass