Browsing by Author "Hu, Ya-Wen"

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Achromatic design in the illumination system for a mini projector with LED light source
(2011-01-01)
Lin, Sheng-Han
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Pan, Jui-Wen
;
Wang, Hsiang-Hua
;
Tsai, Pei-Jung
;
Su, Yu-Chung
We provide a novel achromatic design in the illumination system for a mini projector with an LED light source. The lateral color aberration at the corners of the DMD active area can be reduced to 0.48 mu m by our compact ATIR prism. The total prism size is 4091 mm(3).
Design of a Hybrid Light Guiding Plate With High Luminance for Backlight System Application
(2013-12-01)
Pan, Jui-Wen
;
Hu, Ya-Wen
;
光電系統研究所
;
生醫電子轉譯研究中心
;
Institute of Photonic System
We proposed a novel backlight system, which consisted of a hybrid light guide plate (LGP) and one diffuser sheet. The hybrid LGP contains a flat plate without any microstructures and one layer of optically patterned film (OPF). Comparing with the conventional edge-lit backlight system, the on-axis luminance could be improved to 6.1 x by using the novel backlight system and the half-luminance angle decreased from 21 deg to 10 deg in vertical direction, and decreased from 21 deg to 6 deg in horizontal direction. At the same time, this design also achieved a uniformity of illumination of 89%. The design can predigest the fabrication and reduce the number of components. Moreover, since the microstructures arrangement was periodical, user could use light-emitting diodes (LEDs) on the both sides. When user turned on both side LEDs, the on-axis luminance were improved 1.7 x comparing with turning on single side LEDs.
Design of a Novel Integrated Light Guiding Plate without the Reflective Sheet for Backlight Module Application
(2012-01-01)
Hu, Ya-Wen
;
Chen, Bo-Tsuen
;
Pan, Jui-Wen
;
光電系統研究所
;
生醫電子轉譯研究中心
We design a backlight system, which consists of a novel light guide plate (LGP) and one diffuser. Comparing with a conventional backlight module, the on-axis luminance can be improved up to 6.1-times and the half-luminance angle decreased to 10 degrees in the vertical direction, and decreased to 6 degrees in the horizontal direction.
Light-guide plate using periodical and single-sized microstructures to create a uniform backlight system
(2012-09-01)
Pan, Jui-Wen
;
Hu, Ya-Wen
;
光電系統研究所
;
生醫電子轉譯研究中心
;
Institute of Photonic System
Light-guide plates (LGPs) with aperiodic or size-varied microstructures are widely used in edge-lit light-source backlight systems for their high uniformity. In this Letter we designed a LGP with periodic and single-sized microstructures and analyzed the relationship between the holistic arrangement density of the microstructures and the uniformity. By controlling the holistic arrangement density of the microstructures, the uniformity could also be increased. (c) 2012 Optical Society of America