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The Design of an Integrated Pick-Up Head for High-Density Digital Versatile Disk, Digital Versatile Disk and Compact Disk

Journal Key Engineering Materials (Volumes 364 - 366)
Volume Optics Design and Precision Manufacturing Technologies
Edited by Guo Fan JIN, Wing Bun LEE, Chi Fai CHEUNG and Suet TO
Pages 156-159
DOI 10.4028/www.scientific.net/KEM.364-366.156
Citation Wen Shing Sun et al., 2007, Key Engineering Materials, 364-366, 156
Online since December, 2007
Authors Wen Shing Sun, Ching Cherng Sun
Keywords Cd, DVD, HD-DVD, Optical Pickup Head, Rhomboid Prism
Abstract

A novel design of triple-wavelength design for a compact optical pickup head is presented here. We propose the use of two rhomboid beam-splitter prisms for HD-DVD, DVD and CD devices to align signals with three different wavelengths on the same optical axis. The light is collimated by a collimating lens. The parallel beams are incident on the wavelength selector. The wavelength selector separates the wavelengths with different numerical apertures. The different wavelength signals are focused on the disc by an objective lens.

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