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Paper Abstract and Keywords
Presentation 2013-12-07 11:15
Characteristics of Luminance Uniformity Perception for Performance Evaluation of OLED
Yuki Kawashima, Yuki Nikaido, Yasuki Yamauchi, Masakatsu Hirasawa, Takehiro Nagai (Yamagata Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) One of the most important characteristics of organic electroluminescent (OLED) lighting is that it is a 2-dimensional surface-emitting device. Non-uniformity of the luminance distribution on an OLED panel is, however, easily detected. Therefore, it is important to find characteristics of the luminance uniformity perception for the performance evaluation of OLED panel. In this study, we investigated characteristics of the luminance uniformity perception on different luminance patterns. In an experiment, we measured subjective magnitude of luminance uniformity using visual stimuli with luminance gradient patterns similar to OLED panels. The results showed that the perceptual uniformity linearly decreased as the luminance gradient increased. In addition, luminance gradients that gave the same perceptual uniformity on different luminance patterns were also measured. The results showed that such luminance gradients were largely different depending on the luminance patterns.
Keyword (in Japanese) (See Japanese page) 
(in English) OLED panel / Luminance uniformity perception / Luminance contrast sensitivity / / / / /  
Reference Info. ITE Tech. Rep., vol. 37, no. 55, HI2013-74, pp. 37-40, Dec. 2013.
Paper # HI2013-74 
Date of Issue 2013-11-29 (HI) 
ISSN Print edition: ISSN 1342-6893
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Conference Information
Committee HI  
Conference Date 2013-12-06 - 2013-12-07 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Industry Support Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Visual and auditory Senses, multi modal processing, Kansei information processing, etc. 
Paper Information
Registration To HI 
Conference Code 2013-12-HI 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Characteristics of Luminance Uniformity Perception for Performance Evaluation of OLED 
Sub Title (in English)
Keyword(1) OLED panel  
Keyword(2) Luminance uniformity perception  
Keyword(3) Luminance contrast sensitivity  
1st Author's Name Yuki Kawashima  
1st Author's Affiliation Yamagata University (Yamagata Univ.)
2nd Author's Name Yuki Nikaido  
2nd Author's Affiliation Yamagata University (Yamagata Univ.)
3rd Author's Name Yasuki Yamauchi  
3rd Author's Affiliation Yamagata University (Yamagata Univ.)
4th Author's Name Masakatsu Hirasawa  
4th Author's Affiliation Yamagata University (Yamagata Univ.)
5th Author's Name Takehiro Nagai  
5th Author's Affiliation Yamagata University (Yamagata Univ.)
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Speaker Author-1 
Date Time 2013-12-07 11:15:00 
Presentation Time 25 minutes 
Registration for HI 
Paper # HI2013-74 
Volume (vol) vol.37 
Number (no) no.55 
Page pp.37-40 
Date of Issue 2013-11-29 (HI) 

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