Pulsed illumination driver with intensity control and RGB mixing capabilities for high-resolution near to eye display

Ted L. Lee, Chuan Luo, Brandon Hellman, Yuzuru Takashima

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

1 Scopus citations

Abstract

The recently reported "Angular Spatial Light Modulator"(ASLM) light engine, using pulsed illumination synchronized to a Digital Micromirror Device (DMD), shows significant promise to enhance pixel counts of Near-To-Eye Displays (NED) without increasing package volume, but requires an uncommon illumination driver. We present a field effect transistor based constant-current driver that is fast, compact, and scalable to RGB illumination. The digital-To-Analog convertor modulates intensity on-The-fly for illumination-based multiplexing. The driver outputs 100 ns pulses, up to 24 kHz repetition rate. The circuit is demonstrated for two laser diodes and for two LEDs in an ASLM-enhanced pixel count display.

Original languageEnglish (US)
Title of host publicationOptical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) II
EditorsBernard C. Kress, Christophe Peroz
PublisherSPIE
ISBN (Electronic)9781510640672
DOIs
StatePublished - 2021
EventOptical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) II 2021 - Virtual, Online, United States
Duration: Mar 28 2021Mar 31 2021

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11765
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOptical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) II 2021
Country/TerritoryUnited States
CityVirtual, Online
Period3/28/213/31/21

Keywords

  • Angular Spatial Light Modulator
  • DMD
  • LED
  • Laser diode
  • Light source
  • Near-eye display

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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