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SU‐GG‐I‐48: Evaluation of Viewing Angle Performance on the Latest High‐Brightness Color LCD Monitors with the In‐Plane Switching Panel for Medical Images
Author(s) -
Akamine H,
Takahashi K,
Matsuyama M,
Nakammura Y,
Hashimoto N,
Morishita J
Publication year - 2010
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.3468081
Subject(s) - liquid crystal display , monochrome , brightness , viewing angle , luminance , contrast ratio , optics , contrast (vision) , materials science , artificial intelligence , physics , computer science
Purpose : Our purpose was to compare the viewing angle performance on high‐brightness color liquid‐crystal display (LCD) monitors to that of monochrome LCD monitors. Method and Materials : We used four LCD monitors with an in‐plane switching (IPS) panel: two high‐brightness color LCD unt il 300 cd/m 2 , two‐megapixel, Eizo), and RX210, 220, cd/m 2 , two‐megapixel, Eizo), and two monochrome LCD monitors, (GS220, 500 cd/m 2 , two‐megapixel, Eizo, and G31‐S, 450 cd/m 2 , three‐megapixel, Eizo). The luminance performance of each LCD monitor was measured as a function of the viewing angle (−60° to +60°) in the horizontal, the vertical, and the diagonal directions by use of a telescopic‐type luminance meter without any ambient lighting. The viewing angle performance was evaluated with a relative contrast ratio of 70 % or greater. Results : The range of viewing angle in terms of relative contrast ratio on the 300 cd/m 2 high‐brightness color, the 240 cd/m 2 high‐brightness color, the 500 cd/m 2 two‐megapixel monochrome, and the 450 cd/m 2 three‐megapixel monochrome LCD monitors with similar IPS panels were 34° to 74°, 29° to 48°, 55° to 81°, and 39° to 74°, respectively. The relative contrast ratios showed notable variations for different viewing angles in spite of similar types of panels. Our results indicate that the viewing angle performance on the 240 cd/m 2 color LCD monitor tended to provide a slightly inferior angular performance to the two monochrome LCD monitors used in this study. On the other hand, the 300 cd/m 2 color LCD monitor had a comparable viewing angle performance with the 450 cd/m 2 monochrome LCD monitor. Conclusion : The viewing angle performance on the high‐brightness color LCD monitors is inferior to that of monochrome LCD monitors. However the 300 cd/m 2 color LCD monitor had comparable viewing angle performance with the 450 cd/m 2 monochrome LCD monitor.