Micro objective lens with NA 0.65 for the blue-light small-form-factor optical pickup head.
A micro objective lens with the numerical aperture (NA) of 0.65 and clear aperture of 1.1mm was designed, fabricated, and tested for the proposed blue-light small-form-factor optical pickup head system. It adopted the finite optical conjugation and could be produced by using the glass molding technique. The experimental results verify the optical performance near the diffraction-limited focus spot for the applications of high-density portable optical storage systems.
Shih
Hsi-Fu
HF
Department of Mechanical Engineering, National ChungHsing University, 250 Kuo-Kuang Rd, Taichung, 402 Taiwan, ROC. hfshih@nchu.edu.tw
Lee
Yuan-Chin
YC
Chiu
Yi
Y
Chao
David Wei-Chung
DW
Lin
Gung-Ding
GD
Lu
Chun-Shin
CS
Chiou
Jin-Chern
JC
D016250:Compact Disks; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D007909:Lenses; D008904:Miniaturization; D010783:Photometry / Q000295:instrumentation*; D014159:Transducers