期刊
JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY
卷 24, 期 4, 页码 229-233出版社
WILEY-BLACKWELL
DOI: 10.1002/jsid.427
关键词
variable transmittance; reflective polarizer; color vision deficiency
类别
资金
- AFOSR [FA9550-14-1-0279]
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 similar to 73% to similar to 26% with merely 8 V. Its response time (similar to 50 ms) is at least 10x 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.
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