发明名称 |
Beam shaper, and semiconductor laser source device and optical head using the beam shaper |
摘要 |
A beam shaper is made up of a single lens whose both surfaces are toric surfaces. Assuming that directions where the beam divergence angle are larger and smaller in the far field from the semiconductor laser source are referred to as the vertical and horizontal directions, respectively, both of the toric surfaces have aspheric surfaces in a cross-section in the vertical direction, both of the toric surfaces have spherical surfaces in a cross-section in the horizontal direction, and both centers of curvature of the spherical surfaces are located substantially at a luminous point of the semiconductor laser source.
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申请公布号 |
US6627869(B2) |
申请公布日期 |
2003.09.30 |
申请号 |
US20020131720 |
申请日期 |
2002.04.24 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
TANAKA YASUHIRO;YAMAGATA MICHIHIRO;SASANO TOMOHIKO |
分类号 |
G02B27/09;G11B7/135;H01S5/022;(IPC1-7):H01J3/14 |
主分类号 |
G02B27/09 |
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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