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14‐4: Optical Characteristics of Flexible Display Light Sources with Arbitrary Curvatures
Author(s) -
Käläntär K,
Maeda Shuichi
Publication year - 2018
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.12508
Subject(s) - curvature , regular polygon , radius of curvature , optics , luminous intensity , physics , radius , intensity (physics) , geometry , mathematics , computer science , mean curvature , computer security , mean curvature flow
New emerging flexible light sources (FLS) have a variety of features that boost their usage. The issues of FLSs with small radii are resolved for arbitrary curvatures and the differences between flat and curved light sources are explained. We found that the change in curvature radius of a FLS, either convex or concave, results a defocus issue, a change in emission surface, a variation of luminous intensity distribution and a change in etendue of the FLS. The effect of curvature on the optical properties of curved OLEDs as FLSs are verified in experiments.