发明名称 |
Optical pickup apparatus |
摘要 |
An optical pickup apparatus comprising: a collimating lens configured to convert laser light emitted from a laser diode, from diffused light into parallel light; an objective lens; and a prism configured to guide the laser light emitted from the collimating lens to the objective lens, the prism including: a first face that the laser light emitted from the collimating lens enters; a second face that reflects the laser light entering the first face; and a third face that reflects the laser light reflected from the second face in a direction of the second face, and emits the laser light reflected again from the second face in a direction of the objective lens. |
申请公布号 |
US8179770(B2) |
申请公布日期 |
2012.05.15 |
申请号 |
US20080209742 |
申请日期 |
2008.09.12 |
申请人 |
HOTTA TOHRU;KAWABUCHI KENICHIROU;KAWASAKI RYOICHI;SANYO ELECTRIC CO., LTD.;SANYO OPTEC DESIGN CO., LTD. |
发明人 |
HOTTA TOHRU;KAWABUCHI KENICHIROU;KAWASAKI RYOICHI |
分类号 |
G11B7/00;G02B5/04;G02B7/18;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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