发明名称 |
Spherical-aberration compensating element, fabricating method thereof, and optical pickup device including the same |
摘要 |
An optical pickup device includes at least a laser light source an objective lens, a photo detector, and a spherical-aberration compensating element. The spherical-aberration compensating element is configured so that a holographic polymer-dispersed liquid crystal formed by dispersing liquid crystal molecules in a polymer resin in a predetermined pattern is interposed between a pair of transparent substrates facing each other through transparent electrodes. Additionally, at least two or more spherical-aberration compensating elements are provided on an optical axis closer to the laser light source than the objective lens.
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申请公布号 |
US2008049172(A1) |
申请公布日期 |
2008.02.28 |
申请号 |
US20070892671 |
申请日期 |
2007.08.24 |
申请人 |
SASABE MITSUYOSHI;FUJII HITOSHI;NAGASHIMA KENJI |
发明人 |
SASABE MITSUYOSHI;FUJII HITOSHI;NAGASHIMA KENJI |
分类号 |
G02F1/1334;B29D11/00 |
主分类号 |
G02F1/1334 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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