Image Quality and Light Field Inspection System of Micro-Lens Array

• Main Authors: Chen-Wei Ho, 何振維
• Other Authors: Chern-Sheng Lin
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/72770825712115111299

碩士 === 逢甲大學 === 自動控制工程所 === 97 === The study is to use the computer vision system with XY Table positioning control unit to inspect the image quality and light field of a micro-lens array. For the inspection of Micro-lens array, XY-Table is used to the positioning of micro-lens array. With a He-Ne laser beam as a probing light, the measured image will be shown on the screen. A CCD camera captures the image of the screen and sends the data to the computer to analyze the luminosity function and uniformity. The novel quality parameters are used to identify the quality of light field of micro-lens array. For the inspection of light field, by the method of image processing, the image of light field would be captured by CCD camera. Setting the measured specimen and CCD camera on a track, the system analyzes the different colors light fields according to the information of captured image. The experimental data includes the pseudo color operation, the luminosity function, uniformity, and 3-dementional graphs. For the inspection of modulation transform function (MTF) of a lens, we use one narrow split pattern as an impulse function and Fast Fourier Transform (FFT) to obtain the MTF graph.