发明名称 |
OPTICAL ELEMENT HAVING WAVELENGTH SELECTIVITY |
摘要 |
<p>An optical element having wavelength selectivity, which is easy to manufacture and reduces the manufacturing cost. The optical element comprises a lens array (12) having one end face and a plurality of lenses (L1-L8) arranged on the one end face, and a multi-layered film filter (13) formed on the one end face (14) of the lens array. The multi-layered film filter includes high refractive-index dielectric layers and low refractive-index dielectric layers laminated alternately and its film thickness continuously changes in accordance with positions of the individual lenses. The center wavelength of transmitted light from the multi-layered film filter varies in accordance with the position of the lens array. In a case where mixed light enters the multi-layered film filter from the individual lenses, the mixed light is demultiplexed into lights of different center wavelengths by the multi-layered film filter that has difference thicknesses.</p> |
申请公布号 |
EP1304585(A1) |
申请公布日期 |
2003.04.23 |
申请号 |
EP20010949938 |
申请日期 |
2001.07.11 |
申请人 |
NIPPON SHEET GLASS CO., LTD. |
发明人 |
TOYOSHIMA, TAKAYUKI;ANZAKI, TOSHIAKI |
分类号 |
G02B3/00;G02B5/20;G02B5/28;G02B6/32;G02B6/34;H01L31/0232;H01S5/022;(IPC1-7):G02B5/28;H04B10/12;G02B6/28;G02B5/00;C23C14/34;G02B27/10 |
主分类号 |
G02B3/00 |
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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