发明名称 |
Light emitting module and optical pickup apparatus and method employing the same |
摘要 |
A light emitting module and method and an optical pickup apparatus employing the same are provided. The light emitting module includes a base, a semiconductor laser that is disposed on the base and emits a laser beam of a predetermined wavelength, a cap surrounding the semiconductor laser, a beam shaping window that is fitted with a predetermined portion of the cap corresponding to the propagation path of the laser beam and shapes a transmitted laser beam while reflecting a portion of an incident beam, and a quarter wave plate that is disposed in the propagation path of the laser beam and in front of the beam shaping window and transforms a laser beam horizontally polarized after passing through the beam shaping window into a circularly polarized beam while converting a beam reflected from an optical disc into a vertically polarized beam.
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申请公布号 |
US7450476(B2) |
申请公布日期 |
2008.11.11 |
申请号 |
US20040983902 |
申请日期 |
2004.11.09 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
KIM BONG-GI;NAM DO-HOAN;PARK CHUN-SEONG;LEE MUN-WHAN |
分类号 |
G11B7/00;G11B7/125;G11B7/135 |
主分类号 |
G11B7/00 |
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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