Wavelength and Diffractive Multiplexed Expansion of Field of View for Display Devices

This technology is a field of view expander which is enabled by Volume Holographic Gratings (VHG). The use of VHGs allow for certain wavelengths of light to be reflected into either the center or peripheral fields of view of Augmented or Virtual Reality users. The expanded field of view would help to create a depth cue and assist in mitigating motion sickness effects.

Background:
Current virtual and augmented reality (VR/AR) technologies have fields of view that are not large enough to provide users with enough of a depth cue, which sometimes results in nausea and general motion sickness symptoms. Attempts to improve this issue include increasing the field of view and the addition of waveguides. Simply increasing the field of view is not a satisfactory solution as it causes factors such as resolution and image brightness to decrease; thus, the image quality as a whole suffers. Waveguides have been an underwhelming solution as they provide subpar results in angular attenuation which do not counteract the bulky package they require. This technology has a much sleeker design and provides results that double the input field of view. 

This innovation uses holographic technology, known as volume holographic gratings (VHGs), to effectively double the input field of view into a system. VHGs are not expansive physically and thus this solution saves on the physical packaging when applied to AR/VR systems. Additionally, this solution does not cause the quality of the image to be decreased for the sake of an increased field of view. Overall, the proposed technology works to solve the issue of buggy AR/VR systems with poor displays via a space-saving model with high image quality. 

Applications: 

  • Augmented reality technologies
  • Virtual reality technologies
  • Mixed reality technologies


Advantages: 

  • Ease of production
  • Inexpensive

Website

https://arizona.technologypublisher.com/tech/Wavelength_and_Diffractive_Multiplexed_Expansion_of_Field_of_View_for_Display_Devices

Contact Information

TTO Home Page: https://arizona.technologypublisher.com

Name: Richard Weite

Title: Senior Licensing Manager, College of Optical Sciences

Department: Tech Launch Arizona

Email: RichardW@tla.arizona.edu