Title :
Design of optical head with holographic optical element for small form factor drive systems
Author :
Shih, Hsi-Fu ; Chang, Chi-Lone ; Lee, Kuei-Jen ; Chang, Chi-Shen
Author_Institution :
Mech. Eng. Dept., Nat. Chung-Hsing Univ., Taichung, Taiwan
Abstract :
An optical head composed of an optical module and a biaxial actuator is designed for small form factor drives. This system adopts a finite-conjugate objective lens with numerical aperture 0.65 for 654-nm wavelength. A holographic optical element is used for simplifying the optical configuration which provides a better approach for alignment. The actuator is of a spider-like suspension for the focusing and is of a swing arm for the tracking.
Keywords :
disc drives; holographic optical elements; lenses; optical disc storage; suspensions (mechanical components); 654 nm; biaxial actuator; finite-conjugate objective lens; holographic optical element; optical configuration; optical head; optical module; optical pickup head; small form factor drive systems; spider-like suspension; Actuators; Apertures; Focusing; Holographic optical components; Holography; Laser beams; Lenses; Magnetic heads; Manufacturing; Optical design; Actuator; holographic optical element (HOE); optical pickup head; small form factor;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.842021
