On designing Blu-ray pickup head system with liquid crystal lens

Chih Ta Yen, Yi Chin Fang, Jen Fa Huang, Jui Hsin Hsu, Ping En Chih

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This research proposes a newly developed optical design and concept of active compensation on Blu-ray pick up head system with liquid crystal element. A liquid crystal (LC) lens with external input voltage is employed, that generates a symmetric non-uniform electrical field in the liquid crystal layer. This will direct liquid crystal molecules into appropriate distribution of gradient refractive indices, and result in convergence or divergence of specific light beam. By adjusting the voltages, a wide range of lens power is covered. The LC lens preserves its optical quality over the entire focus range, delivers fast and active compensation through optical design when errors occur. Simulation and tolerance analysis work have been done with Code V [1] software inclusive of defocus, tilt, decenter, and the related compensation. The results conclude that optical design with liquid crystal optics as active compensation device can eliminate aberrations compared to traditional ones.

Original languageEnglish
Title of host publication2012 21st Annual Wireless and Optical Communications Conference, WOCC 2012
Pages155-157
Number of pages3
DOIs
Publication statusPublished - 2012 May 29
Event2012 21st Annual Wireless and Optical Communications Conference, WOCC 2012 - Kaohsiung, Taiwan
Duration: 2012 Apr 192012 Apr 21

Publication series

Name2012 21st Annual Wireless and Optical Communications Conference, WOCC 2012

Other

Other2012 21st Annual Wireless and Optical Communications Conference, WOCC 2012
CountryTaiwan
CityKaohsiung
Period12-04-1912-04-21

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications

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  • Cite this

    Yen, C. T., Fang, Y. C., Huang, J. F., Hsu, J. H., & Chih, P. E. (2012). On designing Blu-ray pickup head system with liquid crystal lens. In 2012 21st Annual Wireless and Optical Communications Conference, WOCC 2012 (pp. 155-157). [6198172] (2012 21st Annual Wireless and Optical Communications Conference, WOCC 2012). https://doi.org/10.1109/WOCC.2012.6198172