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http://dx.doi.org/10.3807/JOSK.2007.11.3.113

LED Light Coupler Design for a Ultra Thin Light Guide  

Lee, J.H. (Dept. of Optical Engineering, Kongju National Univ.)
Chang, W. (Korea Institute of Machinery & Materials)
Choi, D. (Korea Institute of Machinery & Materials)
Publication Information
Journal of the Optical Society of Korea / v.11, no.3, 2007 , pp. 113-117 More about this Journal
Abstract
A LED light coupler is proposed for coupling light from a mini side LED of 0.4 mm height to a very thin (${\sim}0.3 mm$) light guide. Due to the ultra thinness of the light guide, conventional light couplings between LEDs and light guides do not provide adequate coupling efficiency. The designed LED coupler is a compound lens of 3.5 mm length, 1.2 mm height, and 3.3 mm width. The courier first collimates the light from the LED and then concentrates the light in a manner similar to a compound parabolic concentrate, (CPC) into the light guide. The exit surface of the coupler is additionally textured to have micro patterns in order to control the radiance profile.
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Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By Web Of Science : 6  (Related Records In Web of Science)
Times Cited By SCOPUS : 6
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