ELECTROOPTIC FOCUSING SYSTEM FOR A HIGH-DENSITY OPTICAL DISK

被引：3

作者：

OSATO, K ^{[1
]}

KINO, GS ^{[1
]}

KUBOTA, S ^{[1
]}

机构：

[1] SONY CORP,CORP RES LABS,KUBOTA OPTOELECTR LAB,6-7-35 KITASHINAGAWA,SHINAGAWA KU,TOKYO 141,JAPAN

来源：

OPTICS LETTERS | 1993年 / 18卷 / 15期

关键词：

D O I：

10.1364/OL.18.001244

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have developed an electro-optic cell as a fine-adjustment focusing system for an optical disk. The cell is fabricated from transparent lead lanthanum zirconate titanate ceramic and has concentric-patterned indium tin oxide electrodes. The electro-optic cell can generate a relative phase shift in the pupil function. We have confirmed, theoretically and experimentally, that the phase shift induces a change in focal position that is as much as twice the focal depth without degrading the region near the main lobe of the point-spread function.

引用

页码：1244 / 1246

页数：3

共 8 条

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[2]

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[3]

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[5]

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[6]

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[7]

OKA M, 1989, P SOC PHOTO-OPT INS, V1139, P149

[8] A NEW FOCUS SERVO METHOD FOR MAGNETO-OPTICAL DISK SYSTEMS [J].

OKA, M ;

FUKUMOTO, A ;

OSATO, K ;

KUBOTA, S .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1987, 26 :187-190

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