Published: 31 March 2012

Laser beam optical focusing method for measurement of angular sensor glass scale quality parameters

V. Juška1
E. Vaštakas2
E. Ibenskis3
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This paper introduces alternative to existing, glass scale quality parameters measurement method based on optical focusing, which is used in optical disk data reading. Using relatively simple data processing algorithms we were able to detect possible errors and position of the errors on the glass scale. Research showed that measurement method could be used for quality parameters evaluation, but requires usage of the laser pick up heads with known parameters

About this article

11 September 2011
14 February 2012
31 March 2012
glass scale
optical focusing
glass scale defects
quality control
angular encoder