標題: A novel dual focus objective lens for DVD/CD pick-up head
作者: Liu, PY
Shieh, HPD
Ju, JJ
Tsai, ST
Yang, TM
Chang, TK
Liu, JS
光電工程學系
Department of Photonics
公開日期: 1-Mar-1998
摘要: A new dual focus objective lens of combinig aspherical surfaces of DVD and CD for DVD/CD pick-up head was designed. Numerical analysis based on the diffraction model were studied to trade off the spot size, side lobe, and energy ratio of DVD and CD, The hybrid aspherical surfaces of DVD and CD are optimized for low aberration. The spot size of full wave half maximum (FWHM) are 0.553 and 0.88 mu m for DVD and CD, respectively, measured from thus constructed double rings lens.
URI: http://hdl.handle.net/11536/32754
ISSN: 0018-9464
期刊: IEEE TRANSACTIONS ON MAGNETICS
Volume: 34
Issue: 2
起始頁: 462
結束頁: 464
Appears in Collections:Conferences Paper


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