NASA NTRS · 19910014766
Laser optical disk position encoder with active heads
Abstract
An angular position encoder that minimizes the effects of eccentricity and other misalignments between the disk and the read stations by employing heads with beam steering optics that actively track the disk in directions along the disk radius and normal to its surface is discussed. The device adapts features prevalent in optical disk technology to the application of angular position sensing.
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Osborne, Eric P.. 1991-01-01. Laser optical disk position encoder with active heads. https://ntrs.nasa.gov/citations/19910014766
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