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http://dx.doi.org/10.7736/KSPE.2013.30.3.340

Development of Projection Scanbeam-SLA using Liquid Crystal Display and Visible Light Emitting Diode  

Yoon, Su Hyun (School of Mechanical Engineering, Pusan National Univ.)
Park, In Baek (School of Mechanical Engineering, Pusan National Univ.)
Kim, Min Sub (School of Mechanical Engineering, Pusan National Univ.)
Jo, Kwang Ho (School of Mechanical Engineering, Pusan National Univ.)
Lee, Seok Hee (School of Mechanical Engineering, Pusan National Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.30, no.3, 2013 , pp. 340-348 More about this Journal
Abstract
In Projection Stereolithography Apparatus (PSLA), Digital Micromirror Device (DMD) and Liquid Crystal Display (LCD) are used as a beam pattern generator. The DMD shows high resolution, but it is mostly applied in micro stereolithography due to high cost and fabricable area. In LCD, the size of pattern beam is freely controlled due to various panel sizes. The LCD, however, has some limitations such as short life time by the high power light source, non-uniform light intensity of pattern beam and low transmittance of UV-light. To solve these problems in LCD-based PSLA, a Scanbeam-SLA with LCD of 19 inches and visible LED-array is developed. In this system, the light module works like a scanner for uniform illumination. The system configuration, working principle and fabrication examples are addressed in this study.
Keywords
Stereolithography Apparatus (SLA); Liquid Crystal Device (LCD); Visible Light Emitting Diode (LED) Array;
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