Theoretical Analysis of Super-Resolution Readout of Disc Data by Semiconfocal Pickup Heads
- 1 February 1992
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 31 (2S) , 534
- https://doi.org/10.1143/jjap.31.534
Abstract
The possibility of super-resolution readout of digital disc data by means of semiconfocal optics and apodization, i.e., improvement of resolution without increasing objective NA over conventional pickup (PU) heads, is discussed based on diffraction-theory analysis and readout simulation. After reviewing the evolution to semiconfocal pickup heads, mathematical formulae to describe the pickup performances are given. It is demonstrated that super-resolution readout, which allows miniaturization of PU heads and/or enhancement of recording density, can be realized simultaneously with focusing/tracking error detection.Keywords
This publication has 7 references indexed in Scilit:
- Integrated-Optic Disc Pickup Devices Using Waveguide Holographic ComponentsPublished by SPIE-Intl Soc Optical Eng ,1989
- Aplanatic condition required to reproduce jitter-free signals in an optical digital disk systemApplied Optics, 1987
- An integrated-optic disk pickup deviceJournal of Lightwave Technology, 1986
- Optically read disks with increased information densityApplied Optics, 1983
- Diffraction theory of laser read-out systems for optical video discsJournal of the Optical Society of America, 1979
- The Resolving Power of a Coated Objective IIJournal of the Optical Society of America, 1950
- The Resolving Power of a Coated ObjectiveJournal of the Optical Society of America, 1949