Benefits of high refractive index inkjet nanoimprint and light absorbing materials in creation of XR waveguide devices

Jarkko Heikkinen

doi:10.1117/12.2667042

14 March 2023 Benefits of high refractive index inkjet nanoimprint and light absorbing materials in creation of XR waveguide devices

Jarkko Heikkinen

Author Affiliations +

Proceedings Volume 12450, SPIE AR, VR, MR Industry Talks 2023; 124500Z (2023) https://doi.org/10.1117/12.2667042
Event: SPIE AR | VR | MR, 2023, San Francisco, California, United States

Abstract

This presentation explains the key benefits of inkjet coated high index of refraction nanoimprint materials and high index of refraction light absorbing black materials in XR waveguide manufacturing. With the inkjet nanoimprint materials, coating film thicknesses can be controlled to obtain locally optimized film thicknesses for the specific nanoimprint process. This process allows a more controlled way to optimize the residual layer thickness and total efficiency of the waveguide. Internal reflections within the AR waveguide are a major source for reduced contrast. The index matching light absorbing material provides a simple solution for controlling the internal reflections. When high refractive index substrate edges are coated with matching refractive index light absorbing coatings, there is a clear reduction in reflected and scattered light compared with non-RI matched solutions.

Conference Presentation

Citation Download Citation

Jarkko Heikkinen "Benefits of high refractive index inkjet nanoimprint and light absorbing materials in creation of XR waveguide devices", Proc. SPIE 12450, SPIE AR, VR, MR Industry Talks 2023, 124500Z (14 March 2023); https://doi.org/10.1117/12.2667042

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