Olivier Mercier

Research Scientist - Display Systems Research
Facebook Reality Labs

Design and Fabrication of Freeform Holographic Optical Elements
SIGGRAPH Asia 2020
Changwon Jang
FRL Research
Olivier Mercier
FRL Research
Kiseung Bang
FRL Research
Gang Li
FRL Research
Yang Zhao
FRL Research
Douglas Lanman
FRL Research
Holographic optical elements (HOEs) have a wide range of applications, including their emerging use in virtual and augmented reality displays, but their design and fabrication have remained largely limited to configurations using simple wavefronts. In this paper, we present a pipeline for the design, optimization, and fabrication of complex, customized HOEs that enhances their imaging performance and enables new applications. In particular, we propose an optimization method for grating vector fields that accounts for the unique selectivity properties of HOEs. We further show how our pipeline can be applied to two distinct HOE fabrication methods. The first uses a pair of freeform refractive elements to manufacture HOEs with high optical quality and precision. The second uses a holographic printer with two wavefront-modulating arms, enabling rapid prototyping. We propose a unified wavefront decomposition framework suitable for both fabrication approaches. To demonstrate the versatility of these methods, we fabricate and characterize a series of specialized HOEs, including an aspheric lens, a head-up display lens, a lens array, and, for the first time, a full-color caustic projection element.
  title={Design and fabrication of freeform holographic optical elements},
  author={Jang, Changwon and Mercier, Olivier and Bang, Kiseung and Li, Gang and Zhao, Yang and Lanman, Douglas},
  journal={ACM Transactions on Graphics (TOG)},
  publisher={ACM New York, NY, USA}