发明名称 |
Optical pickup |
摘要 |
A lightweight, highly reliable optical pickup including a singlet objective lens is offered by correcting coma aberrations which adversely affect properties of the objective lens having an increased NA. A convergent optical system is composed of a singlet objective lens with a NA of 0.75 or more and includes an aberration-correcting optical system which corrects coma aberrations due to an inclination or shift of central axes of both surfaces of the objective lens or an inclination of the objective lens or the optical storage medium to an optical axis of the optical pickup.
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申请公布号 |
US2002097504(A1) |
申请公布日期 |
2002.07.25 |
申请号 |
US20010041068 |
申请日期 |
2001.11.01 |
申请人 |
KITAMURA KAZUYA;KURATA YUKIO |
发明人 |
KITAMURA KAZUYA;KURATA YUKIO |
分类号 |
G02B7/00;G02B3/08;G02B13/18;G02B27/00;G11B7/095;G11B7/125;G11B7/135;(IPC1-7):G02B3/02;G02B27/14 |
主分类号 |
G02B7/00 |
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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