A New Approach to Polymeric Microlens Array Fabrication Using Soft Replica Molding

Microlens arrays have been fabricated by 3D diffuser lithography in this study. The method mainly adopts two kinds of diffuser films with different transmittances and hazes, integrated by photolithography, polydimethylsiloxane (PDMS) molding and UV forming techniques, to get microlens arrays with different parameters and geometries. The features, such as height, geometry and fill factor of microlens arrays, are controlled by photolithography, using a photomask with circular holes and different exposure doses. The microlens arrays can also be duplicated and transferred to the surface of flexible polyethylene terephthalate (PET) substrate through PDMS molding and UV forming processes. Finally, the outcoupling efficiency of microlens arrays attached to organic light-emitting devices (OLEDs) can be measured and analyzed. More than 60% enhancement of luminous current efficiency can be obtained in experimental results.

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Organic selective-area patterning method for microlens array fabrication

Microelectronic Engineering ◽

10.1016/j.mee.2006.01.163 ◽

2006 ◽

Vol 83 (4-9) ◽

pp. 1333-1335 ◽

Cited By ~ 13

Author(s):

Wen-Kuei Huang ◽

Chu-Jung Ko ◽

Fang-Chung Chen

Keyword(s):

Microlens Array ◽

Selective Area ◽

Array Fabrication

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New high fill-factor dual-curvature microlens array fabrication using UV proximity printing

Microsystem Technologies ◽

10.1007/s00542-011-1282-2 ◽

2011 ◽

Vol 17 (4) ◽

pp. 601-607 ◽

Cited By ~ 1

Author(s):

Tsung-Hung Lin ◽

Hsiharng Yang ◽

Ching-Kong Chao ◽

Shih-Yu Hung ◽

Jen-Sung Hsu

Keyword(s):

Fill Factor ◽

Microlens Array ◽

High Fill Factor ◽

Array Fabrication

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A novel boundary-confined method for high numerical aperture microlens array fabrication

Journal of Micromechanics and Microengineering ◽

10.1088/0960-1317/20/3/035023 ◽

2010 ◽

Vol 20 (3) ◽

pp. 035023 ◽

Cited By ~ 18

Author(s):

Hsin-Ta Hsieh ◽

Guo-Dung John Su

Keyword(s):

Numerical Aperture ◽

Microlens Array ◽

High Numerical Aperture ◽

Array Fabrication

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Focused Plenoptic Camera and Spatial Resolution Improving Technology

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.710.419 ◽

2013 ◽

Vol 710 ◽

pp. 419-423

Author(s):

Juan Ning Zhao ◽

Xiao Na Dong ◽

Suo Chao Yuan

Keyword(s):

High Resolution ◽

Spatial Resolution ◽

Traditional Approach ◽

Microlens Array ◽

Low Resolution ◽

New Approach ◽

Plenoptic Camera ◽

High Resolution Images

The focused plenoptic cameras based on the rays resampling of microlens array on the image formed by main lens, captures radiation on sensor includes the 4D radiance information.Because of both spatial and angular information are recorded on the sensor of fixed pixels number, when rendering image with fixed view there are limited pixels from sub_image are adopted, this results in disappointingly low resolution of the result image. Our approach presents a new approach to rendering an image with higher spatial resolution than the traditional approach, allowing us to render high resolution images that meet the high requirements.

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