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P‐16.7: Optical human‐machine interaction based on sub‐wavelength gratings
Author(s) -
Wang Chengliang,
Wang Haoyu,
Fu Yifei,
Ren Huiling,
Huang Xinran,
Wu Bisheng,
Jiang Shuai,
Zheng Jun,
Ye Zhicheng
Publication year - 2019
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.13731
Subject(s) - optics , wavelength , optoelectronics , grating , photodetector , ray , signal (programming language) , laser , computer science , coupling (piping) , materials science , physics , metallurgy , programming language
Optical signals input from a light source are used as media for human‐machine interaction via the coupling of sub‐wavelength gratings covered on the display screen. The system includes a laser pen, a transparent sub‐wavelength grating optical film which couples the incident light into waveguide, and photodetectors set on the sides of the film to sense and decide the position of incident light. Furthermore, we can load the modulated signal on the incident light so that it can transfer data to the display device. The design provides a novel remote ‘touch’ interaction which is of great practical meaning in the large screen displays.