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Proceedings Paper

Micro-optic element for optical disk memory read-write heads
Author(s): Guoliang Huang; Minxian Wu; Guofan Jin; Yingbai Yan
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Paper Abstract

Based on the theory of computer generated hologram and fabrication of binary optical element, a new micro-optic element for optical disk memory read-write heads is proposed. This element is small in size (5mm in diameter, 1mm in thickness), light in weight (<0.03g), and high in diffraction efficiency (36.64%). It is with three optical functions required for an optical head, splitting beam, producing the focusing error signal and the tracking error signal. When this micro-optic element is used to replace four conventional optical elements (a diffraction grating, a beam splitter prism, a collimating lens and a cylindrical lens) of common optical head, a sophisticated optical head can be produced.

Paper Details

Date Published: 17 June 1994
PDF: 7 pages
Proc. SPIE 2152, Diffractive and Holographic Optics Technology, (17 June 1994); doi: 10.1117/12.178080
Show Author Affiliations
Guoliang Huang, Tsinghua Univ. (China)
Minxian Wu, Tsinghua Univ. (China)
Guofan Jin, Tsinghua Univ. (China)
Yingbai Yan, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 2152:
Diffractive and Holographic Optics Technology
Ivan Cindrich; Sing H. Lee, Editor(s)

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