Title :
High-NA achromatic objective lens
Author :
Hendriks, B.H.W. ; Kuijper, M. ; Meulen, J. M ter ; Schleipen, J.J.H.B. ; de Vries, J.E.
Author_Institution :
Philips Res. Labs., Eindhoven, Netherlands
Abstract :
Developed an achromatic high-NA objective making use of non-periodic phase structures. The effectiveness of the achromatic objective lens has been demonstrated in the BD recorder. No reduction of the recording quality due to laser wavelength shift could be observed. Due to the wide nature of the zones, the phase structure can directly be incorporated into the aspherical surface of the objective lens without significantly influencing the transmission of the objective, making it a cost effective way to make the objective achromatic.
Keywords :
lenses; optical disc storage; BD recorder; achromatic objective lens; high-NA lens; laser wavelength shift; nonperiodic phase structures; optical disc recorder; optical recording systems; recording quality; Actuators; Delay; Diode lasers; Laboratories; Lenses; Manufacturing; Optical design; Optical recording; Power lasers; Refractive index;
Conference_Titel :
Optical Memory and Optical Data Storage Topical Meeting, 2002. International Symposium on
Print_ISBN :
0-7803-7379-0
DOI :
10.1109/OMODS.2002.1028678
