Angular and spatial light modulation by single digital micromirror device for multi-image output and nearly-doubled étendue

Brandon Hellman, Yuzuru Takashima

Research output: Contribution to journalArticle

3 Scopus citations


The “Angular Spatial Light Modulator” (ASLM) achieves simultaneous angular and spatial light modulation at a plane by combining Digital Micromirror Device (DMD) based programmable blazed grating beam steering and binary pattern sequencing. The ASLM system multiplies the number of effective output pixels of the DMD for increased spatial and/or angular degrees of freedom, and nearly-doubles the étendue output of the DMD. We implement multiple illumination and projection schemes to demonstrate ASLM-based extended FOV display, light-field projection, and multi-view display. We also implement time-multiplexed pupil segmented illumination to extend the pattern steering to two dimensions.

Original languageEnglish (US)
Pages (from-to)21477-21496
Number of pages20
JournalOptics Express
Issue number15
StatePublished - Jul 22 2019


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this