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22 September 1993 Optical ring-image 3-D profile sensor
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Proceedings Volume 2101, Measurement Technology and Intelligent Instruments; (1993)
Event: Measurement Technology and Intelligent Instruments, 1993, Wuhan, China
The purpose of this paper is to develop a non-contact profile sensor which will be able to measure 3-D free form machined metal surface as well as 3-D model shapes made of clay or wood. The proposed profile sensor called "optical ring image sensor' has two major advantages. First, reflection light from a target surface in optical axis can be detected in all directions using a ring slit. Second, the radius of optical ring image is linearly proportional to the displacement of the surface in optical axis. In this paper, the principle and properties of the optical ring sensor are presented analytically and experimentally. Finally, it is concluded that this sensor makes it possible to measure the profiles within an accuracy of 1O,a m for the 3-D free form surface with steep angles up to ± 80 degrees.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Takashi Miyoshi and Yasuhiro Takaya "Optical ring-image 3-D profile sensor", Proc. SPIE 2101, Measurement Technology and Intelligent Instruments, (22 September 1993);

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