Holography for automotive applications: From HUD to LIDAR

Pierre Alexandre Blanche, Colton Bigler, Craig Draper, Joshua McDonald, Kalluri Sarma

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Holography can offer unique solutions to the specific problems faced by automotive optical systems. Frequently, when possibilities have been exhausted using refractive and refractive designs, diffraction can come to the rescue by opening a new dimension to explore. Holographic optical elements (HOEs), for example, are thin film optics that can advantageously replace lenses, prisms, or mirrors. Head up display (HUD) and LIDAR for autonomous vehicles are two of the systems where our group have used HOEs to provide original answers to the limitations of classical optic. With HUD, HOEs address the problems of the limited field of view, and small eye box usually found in projection systems. Our approach is to recycle the light multiple times inside a waveguide so the combiner can be as large as the entire windshield. In this system, a hologram is used to inject a small image at one end of a waveguide, and another hologram is used to extract the image several times, providing an expanded eye box. In the case of LIDAR systems, non-mechanical beam scanning based on diffractive spatial light modulator (SLM), are only able to achieve an angular range of few degrees. We used multiplexed volume holograms (VH) to amplify the initial diffraction angle from the SLM to achieve up to 4π steradian coverage in a compact form factor.

Original languageEnglish (US)
Title of host publicationOptical Data Storage 2018
Subtitle of host publicationIndustrial Optical Devices and Systems
EditorsYuzuru Takashima, Ryuichi Katayama
PublisherSPIE
ISBN (Electronic)9781510620858
DOIs
StatePublished - 2018
Event5th Optical Data Storage 2018: Industrial Optical Devices and Systems, ODS 2018 - San Diego, United States
Duration: Aug 19 2018 → …

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10757
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference5th Optical Data Storage 2018: Industrial Optical Devices and Systems, ODS 2018
CountryUnited States
CitySan Diego
Period8/19/18 → …

Keywords

  • Holography
  • LIDAR
  • head up display
  • holographic optical element
  • waveguide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Blanche, P. A., Bigler, C., Draper, C., McDonald, J., & Sarma, K. (2018). Holography for automotive applications: From HUD to LIDAR. In Y. Takashima, & R. Katayama (Eds.), Optical Data Storage 2018: Industrial Optical Devices and Systems [107570B] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10757). SPIE. https://doi.org/10.1117/12.2323771