Development of DMD reflection-type CCD camera for phase analysis and shape measurement

Shien Ri; Yasuhiro Matsunaga; Motoharu Fujigaki; Toru Matui; Yoshiharu Morimoto

doi:10.1117/12.647938

6 December 2005 Development of DMD reflection-type CCD camera for phase analysis and shape measurement

Shien Ri, Yasuhiro Matsunaga, Motoharu Fujigaki, Toru Matui, Yoshiharu Morimoto

Proceedings Volume 6049, Optomechatronic Sensors and Instrumentation; 60490I (2005) https://doi.org/10.1117/12.647938
Event: Optomechatronic Technologies 2005, 2005, Sapporo, Japan

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.

Citation Download Citation

Shien Ri, Yasuhiro Matsunaga, Motoharu Fujigaki, Toru Matui, and Yoshiharu Morimoto "Development of DMD reflection-type CCD camera for phase analysis and shape measurement", Proc. SPIE 6049, Optomechatronic Sensors and Instrumentation, 60490I (6 December 2005); https://doi.org/10.1117/12.647938

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