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Proceedings Paper

Development of DMD reflection-type CCD camera for phase analysis and shape measurement
Author(s): Shien Ri; Yasuhiro Matsunaga; Motoharu Fujigaki; Toru Matui; Yoshiharu Morimoto
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Paper Abstract

DMD (Digital Micro-mirror Device) is a new device, which has hundreds of thousands of micro-mirrors in one chip. This paper presents results of the development of a camera system based on DMD technology for phase analysis and shape measurement that we call "DMD reflection-type CCD camera" or "DMD camera". Incorporation of DMD technology enables accurate control of the intensity reaching the imaging detector of a camera. In order to perform accurate pixel-to-pixel correspondence adjustment with high accuracy, we use a moire technique. In addition, we introduce a high-speed controllable DMD operation board and improve the software to control each DMD mirror with high-speed. As the results, each DMD mirror works as a high-speed controllable shutter for the corresponding CCD pixel. Furthermore, as an application using the DMD camera, we perform an experiment by "DMD-type integrated phase-shifting method using correlations," which can analyze the phase distributions of projected grating from one image taken by the DMD camera. These principles and experimental results in dynamic condition are shown.

Paper Details

Date Published: 6 December 2005
PDF: 12 pages
Proc. SPIE 6049, Optomechatronic Sensors and Instrumentation, 60490I (6 December 2005); doi: 10.1117/12.647938
Show Author Affiliations
Shien Ri, Wakayama Univ. (Japan)
Yasuhiro Matsunaga, Wakayama Univ. (Japan)
Motoharu Fujigaki, Wakayama Univ. (Japan)
Toru Matui, Wakayama Univ. (Japan)
Yoshiharu Morimoto, Wakayama Univ. (Japan)

Published in SPIE Proceedings Vol. 6049:
Optomechatronic Sensors and Instrumentation
Yasuhiro Takaya, Editor(s)

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