发明名称 |
Prism and manufacturing method thereof, optical beam shaping apparatus and optical head device utilizing such prism, and optical beam shaping method |
摘要 |
A prism includes: a first portion made of a first material having a wavelength dependency in a refractive index; and a second portion adhered to the first portion, the second portion being made of a second material having a wavelength dependency in a refractive index which is different from the wavelength dependency in the refractive index of the first material. The first portion and the second portion have shapes such that the wavelength dependency in the refractive index of the first portion and the wavelength dependency in the refractive index of the second portion are substantially cancelled by each other.
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申请公布号 |
US6504660(B1) |
申请公布日期 |
2003.01.07 |
申请号 |
US20000668826 |
申请日期 |
2000.09.22 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
NISHIWAKI SEIJI;SAIMI TETSUO |
分类号 |
G02B5/04;(IPC1-7):G02B5/04 |
主分类号 |
G02B5/04 |
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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