Waveguide based optical combiners for Augmented Reality (AR) glasses are integrating several Surface Relief Gratings (SRG) whose pitch sizes can be as small as 200 nm for the blue wavelength. All SRG components exploit the first diffraction order to couple in and out or to deviate the light. We present SRG using higher diffraction orders featuring over-wavelength pitch sizes. Our gratings use the Edge Wave (EW) diffraction phenomenon to steer light in the preferred far field direction.
Over-wavelength pitch sized diffraction gratings for augmented reality applications
Over-wavelength pitch sized diffraction gratings for augmented reality applications
Over-wavelength pitch sized diffraction gratings for augmented reality applications
Related Content
Adding the sense of touch to hearing and seeing would be necessary for a true immersive experience. This is the promise of the growing "4D-cinema" based on motion platforms and others sensory effects (water spray, wind, scent, etc.). Touch provides a new dimension for filmmakers and leads to a new creative area, the haptic cinematography. However design rules ar…
This chapter presents the Integrated Lens Antenna (ILA) technology as it evolved since its introduction aiming to respond to the needs of emerging applications such as high-data-rate communication, intelligent transport, and mm-wave imaging. The topics covered include the ILA design concepts as well as the electromagnetic phenomena intrinsic to dielectric lenses…
Webinar /Jun 2024
Blog Post /May 2025