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Proceedings Paper

Design of LED projector based on gradient-index lens
Author(s): Liyong Qian; Xiangbing Zhu; Haitian Cui; Yuanhang Wang
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Paper Abstract

In this study, a new type of projector light path is designed to eliminate the deficits of existing projection systems, such as complex structure and low collection efficiency. Using a three-color LED array as the lighting source, by means of the special optical properties of a gradient-index lens, the complex structure of the traditional projector is simplified. Traditional components, such as the color wheel, relay lens, and mirror, become unnecessary. In this way, traditional problems, such as low utilization of light energy and loss of light energy, are solved. With the help of Zemax software, the projection lens is optimized. The optimized projection lens, LED, gradient-index lens, and digital micromirror device are imported into Tracepro. The ray tracing results show that both the utilization of light energy and the uniformity are improved significantly.

Paper Details

Date Published: 10 January 2018
PDF: 11 pages
Proc. SPIE 10616, 2017 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 106161G (10 January 2018); doi: 10.1117/12.2295555
Show Author Affiliations
Liyong Qian, Anhui Normal Univ. (China)
Anhui Province Key Lab. of Optoelectric Materials Science and Technology (China)
Xiangbing Zhu, Anhui Normal Univ. (China)
Anhui Province Key Lab. of Optoelectric Materials Science and Technology (China)
Haitian Cui, Anhui Normal Univ. (China)
Anhui Province Key Lab. of Optoelectric Materials Science and Technology (China)
Yuanhang Wang, Anhui Normal Univ. (China)
Anhui Province Key Lab. of Optoelectric Materials Science and Technology (China)


Published in SPIE Proceedings Vol. 10616:
2017 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments
Yongtian Wang; Baohua Jia; Kimio Tatsuno; Liquan Dong, Editor(s)

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