Evaluation of legibility and visual fatigue caused by luminescent text displays

Daiki Saito, Keiichi Watanuki, Keiichi Muramatsu, Kazunori Kaede, Masutsugu Tasaki, Takashi Kanahira, Eiji Ishiguro, Naoya Mashiko

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Light-emitting diodes (LEDs) are widely used for backlighting text indicators in vehicles. It is desirable that such text indicators have high legibility and low fatigue-inducing qualities. Suitable spectral distributions for text presentation in vehicles have not yet been clarified. This study examined legibility and fatigue when participants read Japanese sentences presented through backlight emission for 10, min in a dark room. The backlight indicators employed four type of white LEDs. The participants were asked to answer questionnaires to evaluate legibility and fatigue. Moreover, the critical fusion frequency and brain activity were measured to evaluate fatigue objectively. The questionnaire results show that all colored backlighting displayed almost an equal legibility. The overall result suggests that participants were most and least fatigued when viewing text illuminated by high color-rending and greenish white backlighting, respectively. Thus, fatigue can be reduced using LEDs with different spectral distributions.

Original languageEnglish
Title of host publicationIntelligent Human Systems Integration - Proceedings of the 1st International Conference on Intelligent Human Systems Integration IHSI 2018
Subtitle of host publicationIntegrating People and Intelligent Systems
EditorsWaldemar Karwowski, Tareq Ahram
PublisherSpringer Verlag
Pages646-651
Number of pages6
ISBN (Print)9783319738871
DOIs
Publication statusPublished - 2018
Externally publishedYes
Event1st International Conference on Intelligent Human Systems Integration: Integrating People and Intelligent Systems, IHSI 2018 - Dubai, United Arab Emirates
Duration: 2018 Jan 72018 Jan 9

Publication series

NameAdvances in Intelligent Systems and Computing
Volume722
ISSN (Print)2194-5357

Other

Other1st International Conference on Intelligent Human Systems Integration: Integrating People and Intelligent Systems, IHSI 2018
CountryUnited Arab Emirates
CityDubai
Period18/1/718/1/9

Keywords

  • Fatigue
  • LED
  • Legibility

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science(all)

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