Resolution-enhanced light field displays by recombining subpixels across elemental images

Zong Qin*, Ping Yen Chou, Jui Yi Wu, Cheng Ting Huang, Yi-Pai Huang

*Corresponding author for this work

Research output: Contribution to journalArticle

7 Scopus citations


Light field displays based on integral imaging feature ultra-compact volume and freedom of the vergence-accommodation conflict for advanced virtual reality and augmented reality devices; however, they currently suffer from low visual resolution. Considering that subpixels have an intrinsically tripled resolution compared with triad pixels, this Letter develops a subpixel-level algorithm by recombining subpixels with relatively small raytracing errors from different elemental images. As a result, based on a highly accurate image formation model, the resolution of a typical system (pixel size, 7.8 μm; system thickness, 4.07 mm) is remarkably enhanced from 8.3 to 20.0 pixels per degree, for a gain of 2.41. In addition, the color breakup introduced by the chromatic subpixels is largely suppressed.

Original languageEnglish
Pages (from-to)2438-2441
Number of pages4
JournalOptics Letters
Issue number10
StatePublished - 15 May 2019

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