Browsing by Author "Tsao, Chao-Hsi"

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Application of a global optimization process to the design of pickup heads for compact and digital versatile disks
(2006-10-01)
Tsao, Chao-Hsi
;
Chern, Jyh-Long
;
光電工程學系
;
Department of Photonics
A global optimization process is developed for designing an objective lens for multiple-configuration applications. As a demonstration, it is shown that diffraction-limit performance can be achieved for a pickup head used for both compact disks (wavelength 780 nm) and digital versatile disks (wavelength range 635 to 650 nm) with different working distances and focal lengths, at a numerical aperture of 0.6. (c) 2006 Society of Photo-Optical Instrumentation Engineers.
Application of global optimization to design of an aspheric pickup head for multiple wavelengths
(2006-01-01)
Tsao, Chao-Hsi
;
Chern, Jyh-Long
;
光電工程學系
;
Department of Photonics
An optimization process combining of global optimization algorithm and further optimization treatment is proposed and demonstrated with application to the objective lenses of multiple-wavelength configurations. Based on the optimal variable set of aspheric coefficients obtained by the proposed global optimization strategy, singlet objective lens for different operational configurations, i.e., for CD and DVD, and for DVD and HDDVD, can be deduced.
Application of global optimization to design of an aspheric pickup head for multiple wavelengths - art. no. 63422G
(2006)
Tsao, Chao-Hsi
;
Chern, Jyh-Long
;
光電工程學系
;
Department of Photonics
An optimization process combining of global optimization algorithm and further optimization treatment is proposed and demonstrated with application to the objective lenses of multiple-wavelength configurations. Based on the optimal variable set of aspheric coefficients obtained by the proposed global optimization strategy, singlet objective lens for different operational configurations, i.e., for CD and DVD, and for DVD and HDDVD, can be deduced.