发明名称 |
Modified concentric spectrograph |
摘要 |
<p>A modified concentric spectrograph for diffracting light with high stray light rejection without astigmatism is provided. The modified spectrograph includes a grating, a lens, and at least one entrance port and one exit port. The grating has a concave surface and a meridian plane with a first side and a second side. The lens has a substantially planar surface and a convex surface. Preferably, the convex and concave surfaces are substantially concentric. The ports are substantially located on different sides of the meridian plane near a focal plane of the spectrograph. The position of a focal plane may be modified using an optically transmissive triangular prism with a reflective surface, and an optically transmissive block. The position of a focal plane may further be modified with one or more optically transmissive plates. Methods for using the spectrograph are also provided. <IMAGE></p> |
申请公布号 |
EP0862050(A2) |
申请公布日期 |
1998.09.02 |
申请号 |
EP19980301487 |
申请日期 |
1998.02.27 |
申请人 |
INSTRUMENTS S.A., INC. |
发明人 |
SLUTTER, WARREN S.;MILLET, VIVIANE D.;JIANG, WU;GOLDSTONE, JEREMY J.;THEVENON, ALAIN F.R. |
分类号 |
G01J3/02;G01J3/18;G02B5/18;G02B13/00;(IPC1-7):G01J3/18 |
主分类号 |
G01J3/02 |
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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