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Optical Engineering

Compact camera for three-dimensional profilometry incorporating a single MEMS mirror
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Paper Abstract

To overcome inherent problems with conventional three-dimensional profiling systems based on pattern-projection method, we propose incorporating a digital device, such as a single MEMS mirror in the projection optics. In this system, a projector is controlled to generate a projection pattern with an appropriate periodic structure and sinusoidal intensity distribution. The key aspect to this projection method is that sinusoidal signals are generated by a function generator; that is, the temporal sinusoidal intensity distribution is transformed from the time domain to the spatial domain. This flexible pattern-projection method permits phase-shifting techniques to be applied to industrial measurement and inspection. This apparatus is so compact as to have a dimensional size similar to a conventional digital camera [53  mm(H)×130  mm(W)×38  mm(D)]. Furthermore, it is lightweight (320 g) without a battery or circuit boards. Such a compact system can be used as a palm-top camera and potentially may be used in low cost measurement systems for three-dimensional profilometry.

Paper Details

Date Published: 31 January 2012
PDF: 8 pages
Opt. Eng. 51(1) 013601 doi: 10.1117/1.OE.51.1.013601
Published in: Optical Engineering Volume 51, Issue 1
Show Author Affiliations
Toshitaka Wakayama, Saitama Medical Univ. (Japan)
Toru Yoshizawa, Saitama Medical Univ. (Japan)

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