High-Ambient-Contrast Augmented Reality With A Tunable Transmittance Liquid Crystal Film And A Functional Reflective Polarizer

Keywords

color vision deficiency; reflective polarizer; variable transmittance

Abstract

We have proposed a compact, yet high ambient contrast ratio augmented reality (AR) system by incorporating a tunable transmittance liquid crystal (LC) cell and a thin functional reflective polarizer. The broadband polarization-independent guest-host LC cell can change the transmittance from ∼73% to ∼26% with merely 8 V. Its response time (∼50 ms) is at least 10× faster than that of photochromic materials used in commercial transition glasses. Combining the LC cell with a light sensor, the tunable transmittance LC cell can efficiently improve the ambient contrast ratio of the AR system under different lighting conditions. Meanwhile, the functional reflective polarizer works similarly to a polarizing beam splitter, except that it is much more compact and lighter weight. With some modification, we also designed a functional reflective polarizer to help people with color vision deficiency. We report a compact yet high ambient contrast ratio augmented reality system by incorporating a tunable transmittance liquid crystal cell and a thin reflective polarizer. If we replace the polarizing beam splitter with a functional reflective polarizer, the system would benefit those users with color vision deficiency.

Publication Date

4-1-2016

Publication Title

Journal of the Society for Information Display

Volume

24

Issue

4

Number of Pages

229-233

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1002/jsid.427

Socpus ID

84978015838 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84978015838

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