Laser expander design of highly efficient Blu-ray disc pickup head

Wen Shing Sun*, Kun Di Liu, Jui-Wen Pan, Chuen Lin Tien, Min Sheng Hsieh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

We present a collimator design with a horizontal beam expander for a Blu-ray Disc pickup head. The design transforms the shape of a laser diode beam from an elliptical into circular which achieves higher efficiency in the pickup head system. In this research, we suggest two ways to do the beam expander. One way is to use two cylindrical lenses, and the other is to use two prisms.

Original languageEnglish
Pages (from-to)2235-2246
Number of pages12
JournalOptics Express
Volume17
Issue number4
DOIs
StatePublished - 16 Feb 2009

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