Multi-path monochromator

Details Multi-path monochromator Multi-path monochromator

2005-06-14

2005-06-14

Evans, F. L. (Department: 2877)

Optics: measuring and testing

By dispersed light spectroscopy

With monochromator structure

C356S328000

Reexamination Certificate

active

06906798

ABSTRACT:
In order to provide a multi-path monochromator capable of reducing the size of optical parts with a high resolution and a wide dynamic range, the multi-path monochromator has a lens2used as a first collimator for converting an incident light into a parallel light, a diffraction grating4for diffracting an output light outputted from the lens2, plane mirrors3and5for reflecting a diffraction light diffracted by the diffraction grating4to return the diffraction light back to a same path, a parabolic mirror7used as a second collimator for collecting a diffraction light which is again diffracted by the diffraction grating into which a reflected light is again outputted from the plane mirror, and an output slit positioned at a focal position of the parabolic mirror7. The parabolic mirror7used as the second collimator has a focal length which is longer than a focal length of the lens used as the first collimator.

REFERENCES:
patent: 4752130 (1988-06-01), George et al.
patent: 5532818 (1996-07-01), Tokumoto
patent: 6411382 (2002-06-01), Nishina
patent: 6636306 (2003-10-01), He et al.
patent: 6646739 (2003-11-01), Kaneko
patent: 2001/0024275 (2001-09-01), Suzuki et al.
patent: 2003/0011769 (2003-01-01), Rakuljic et al.
patent: 8145795 (1996-06-01), None

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