发明名称 |
Prism and optical device using the same |
摘要 |
A prism includes a prism base member having first and second faces intersecting with each other and including calcium fluoride, an antireflection film for oblique incidence formed on the first face of the prism base member, and an antireflection film for 0° incidence formed on the second face of the prism base member. Each of the antireflection film for oblique incidence and the antireflection film for 0° incidence includes a high-refractive-index layer with a relatively high refractive index, and a low-refractive-index layer with a relatively low refractive index. The high-refractive-index layer includes thorium fluoride and the low-refractive-index layer includes aluminum fluoride.
|
申请公布号 |
US6501598(B2) |
申请公布日期 |
2002.12.31 |
申请号 |
US20010923455 |
申请日期 |
2001.08.08 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, TLD. |
发明人 |
IWAMOTO HIROMI |
分类号 |
G02B1/11;G02B5/04;H01S3/034;(IPC1-7):G02B5/04;G02B5/28;H01S3/08 |
主分类号 |
G02B1/11 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|