THEORETICAL-ANALYSIS OF SUPERRESOLUTION READOUT OF DISK DATA BY SEMICONFOCAL PICKUP HEADS

被引：8

作者：

SUHARA, T

NISHIHARA, H

机构：

[1] Department of Electronics, Osaka University, Osaka

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1992年 / 31卷 / 2B期

关键词：

OPTICAL DISK HEADS; SUPERRESOLUTION; CONFOCAL PICKUP; APODIZATION; READOUT RESPONSE; THEORY;

D O I：

10.1143/JJAP.31.534

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

页码：534 / 541

页数：8

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