Paper
24 October 1997 Hybrid optical elements for dual-focus pickup
Der-Chin Su, Jen-Tsorng Chang, Yang-Tung Huang
Author Affiliations +
Abstract
Two hybrid optical elements re presented for dual-focus pickup in the digital versatile disk (DVD) system. One is a hybrid dual-focus lens and the other is a holographic regional mirror. The optical head consisting of these two hybrid optical elements can read the information recorded on two layers of DVD simultaneously. Its specifications are described. The fabrication parameters of these two hybrid optical elements are derived.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Der-Chin Su, Jen-Tsorng Chang, and Yang-Tung Huang "Hybrid optical elements for dual-focus pickup", Proc. SPIE 3159, Algorithms, Devices, and Systems for Optical Information Processing, (24 October 1997); https://doi.org/10.1117/12.279451
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KEYWORDS
Holography

Optical components

Mirrors

Digital video discs

Head

Diffraction

Digital holography

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