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Enhancement of diffuse reflectance using air tunnel structure |
Optics Letters, Vol. 38, Issue 3, pp. 290-292 (2013)
http://dx.doi.org/10.1364/OL.38.000290
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Abstract
Submicrometer air gap structure has formed on diffuse reflection structure to improve light reflectance. Covering polymer or liquid on a diffuse reflector to make optical components induces the severe decrease of the total reflectance, since the diffuse reflected angle of some light rays is larger than the critical angle and the rays travel to the medium until meeting a proper small incident angle. The reflectance drops to 68% of the original value with just a polymer coating on the diffuse reflector. The formation of an air tunnel structure between the polymer layer and the diffuse reflector makes a symmetrical reflective index matching state and recovers 95% of the original reflectance. Due to the simple fabrication process and the chemical stability, the structure can be applied to various optical components and reflective display devices.
© 2013 Optical Society of America
OCIS Codes
(220.4000) Optical design and fabrication : Microstructure fabrication
(230.1980) Optical devices : Diffusers
ToC Category:
Optical Devices
History
Original Manuscript: November 21, 2012
Revised Manuscript: December 19, 2012
Manuscript Accepted: December 20, 2012
Published: January 17, 2013
Citation
Jae Eun Jang, Gae Hwang Lee, Byoung Gwon Song, Seung Nam Cha, and Jae Eun Jung, "Enhancement of diffuse reflectance using air tunnel structure," Opt. Lett. 38, 290-292 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-3-290
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