公开(公告)号：EP0862050A3

公开(公告)日：2000-04-12

申请号：EP98301487.9

申请日：1998-02-27

Applicant: Instruments S.A., Inc.

Inventor： Slutter, Warren S. ,  Millet, Viviane D. ,  Jiang, Wu ,  Goldstone, Jeremy J. ,  Thevenon, Alain F.R.

IPC: G01J3/18

CPC classification number: G01J3/18 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/0256 ,  G01J3/0262

Abstract: 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.

公开(公告)号：EP0862050A2

公开(公告)日：1998-09-02

申请号：EP98301487.9

申请日：1998-02-27

Applicant: Instruments S.A., Inc.

Inventor： Slutter, Warren S. ,  Millet, Viviane D. ,  Jiang, Wu ,  Goldstone, Jeremy J. ,  Thevenon, Alain F.R.

IPC: G01J3/18

CPC classification number: G01J3/18 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/0256 ,  G01J3/0262

Abstract: 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.

Abstract translation: 提供了一种用于衍射具有高散射光抑制而没有散光的光的改进的同心光谱仪。 改进的光谱仪包括光栅，透镜，以及至少一个入口和一个出口。 光栅具有凹面和具有第一面和第二面的子午面。 透镜具有基本平坦的表面和凸面。 优选地，凸表面和凹面基本上是同心的。 端口基本上位于子午线平面附近的光谱仪的焦平面的不同侧面上。 可以使用具有反射表面的光学透射三角形棱镜和光学透射块来修改焦平面的位置。 焦平面的位置可以进一步用一个或多个光学透射板修改。 还提供了使用光谱仪的方法。