Abstract
A method of using laser diode fiber alignment, diffraction imaging technique, and a CCD camera to measure the straightness of large-scale dimension was put forward, in which, a laser diode fiber alignment beam is used as the datum reference of straightness, while any deviation of measured data from this datum can be detected by a CCD camera directly. Besides, a novel image processing algorithm was also presented. The experimental results showed that for the measurement range of L (m), the measurement accuracy of the system reaches 3+10-6 micron.
Original language | English |
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Pages (from-to) | 215-220 |
Number of pages | 6 |
Journal | Chinese Journal of Lasers B (English Edition) |
Volume | B8 |
Issue number | 3 |
Publication status | Published - Jun 1999 |
Externally published | Yes |