Premium
Assist device in color discrimination using Heilmeier type guest‐host liquid crystal for red‐green color vision defect
Author(s) -
Nakayama Keizo
Publication year - 2019
Publication title -
electronics and communications in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.131
H-Index - 13
eISSN - 1942-9541
pISSN - 1942-9533
DOI - 10.1002/ecj.12197
Subject(s) - magenta , color vision , color gel , flicker , liquid crystal display , computer vision , color discrimination , artificial intelligence , color filter array , rgb color model , optics , color difference , colored , filter (signal processing) , computer science , materials science , computer graphics (images) , physics , inkwell , layer (electronics) , composite material , speech recognition , thin film transistor
For assist in color discrimination of color vision defects, the method of observing objects through colored filter has been known. If red filter, which absorbs mostly all light except red light, is used, only the red objects can be highly visible. In this paper, a Heilmeier type guest‐host liquid crystal device with magenta dye was applied to a filter type assist device for red‐green color vision defect. This device can easily control transmittance of green light by changing applied voltage, and make green objects perceived to flicker synchronously. The subjective appraisal of the assist device in color discrimination was performed by five participants with normal vision using a constructed experimental system using a video camera and a PC with a vision simulator. For the confusion indices of the Panel D‐15 test, the effect of the device was statistically significant at P < .01. Moreover, a participant with color vision deficiency assessed it and got results without color confusion on the Panel D‐15 test.