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KMID : 0380319740130000013
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Journal of Korean Research Institute for Better Living
1974 Volume.13 No. 0 p.13 ~ p.23
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A Study of the Manufacture for Optical Digital Counter with Linear-Measurement
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Abstract
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In recent years, as it has become easy to obtain very fine and large diffraction gratings, the application of moire´fringe to measure fine length measurements has been markedly developed, and this is expected to become a powerful means for precision metrology. By the Optical system the intensity distribution of the moire´ fringe is obseraed in an Oscilloscope through a multiplier photube, and the shapes and visibilities of the fringes can be in vestigated.
In measuring a length, the system works as a moire´fringe pulse counting system in which the reading head (scale grating) moves in parallel with the fixed index grating.
The entire optical-electrical system developed in the present work is found by very attractive for any precision length measurement.
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