A High-Stiffness Optical Head For Quick Access And Precise Tracking Servo

Akinori Watabe; Kikuji Katoh; Hiroo Ukita

doi:10.1117/12.946446

12 April 1985 A High-Stiffness Optical Head For Quick Access And Precise Tracking Servo

Akinori Watabe, Kikuji Katoh, Hiroo Ukita

Proceedings Volume 0529, Optical Mass Data Storage I; (1985) https://doi.org/10.1117/12.946446
Event: 1985 Los Angeles Technical Symposium, 1985, Los Angeles, United States

Abstract

An optical head for quick access and precise tracking servo has been developed. The head uses two independent one-dimensional lens actuators and a pair of relay lenses, instead of the conventional galvano mirror or two-dimensional lens actuator. This simple device is suitable to widen the higher-order resonance frequency and to apply the two-stage radial srevo which increases the tracking servo gain and range. The relay optics reduces the offset error caused by the deviation in the reflected back beam on 100 μm tracking to less than 0.1μm and enables the light source and detection parts to be separated from the positioner drive which carries only the lens actuators for access.

Citation Download Citation

Akinori Watabe, Kikuji Katoh, and Hiroo Ukita "A High-Stiffness Optical Head For Quick Access And Precise Tracking Servo", Proc. SPIE 0529, Optical Mass Data Storage I, (12 April 1985); https://doi.org/10.1117/12.946446

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