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Proceedings Paper

Liquid crystal aberration compensation devices
Author(s): Sjoerd Stallinga; Joris J. Vrehen; Jeroen Wals; Henk Stapert; Emile Verstegen
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Paper Abstract

The application of aberration compensation devices can support the trend to higher information densities in optical data storage. The information content of a disc may be increased while maintaining acceptable tolerance levels. For example, disc tilt dependence may require coma compensation, whereas double layer formats require spherical aberration compensation. Liquid crystals (LCs) can be successfully applied in such devices. The design of two practical implementations is discussed; a coma compensating LC-cell with special electrode-design for optimized tolerances w.r.t. decentering, and a lens made of photopolymerizable LC, which can be used to compensate for spherical aberration.

Paper Details

Date Published: 6 July 2000
PDF: 10 pages
Proc. SPIE 4081, Optical Storage and Optical Information Processing, (6 July 2000); doi: 10.1117/12.390521
Show Author Affiliations
Sjoerd Stallinga, Philips Research Labs. (Netherlands)
Joris J. Vrehen, Philips Optical Storage (Netherlands)
Jeroen Wals, Philips Optical Storage (Netherlands)
Henk Stapert, Philips Research Labs. (Netherlands)
Emile Verstegen, Philips Research Labs. (Netherlands)


Published in SPIE Proceedings Vol. 4081:
Optical Storage and Optical Information Processing
Han-Ping D. Shieh; Tomas D. Milster, Editor(s)

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