Double grating three dimensional spectrograph

Details Double grating three dimensional spectrograph Double grating three dimensional spectrograph

2005-10-04

2005-10-04

Lauchman, Layla G. (Department: 2877)

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

C356S328000, C356S334000

Reexamination Certificate

active

06952260

ABSTRACT:
A spectrograph with a first concave spectrographic diffraction grating is positioned to receive light from the input light source is configured to provide a diffracted light output dispersing the components of the input light source in a first direction. The dispersion forms the input light into an intermediate spectra. The intermediate spectra is formed in a focal surface by the once diffracted light. A slit is substantially positioned on the focal surface. A second concave diffraction grating is positioned to receive once diffracted light from the slit and configured to provide a twice diffracted light output, the second concave diffraction grating dispersing the components of the input light source in a second direction. The second direction is different from the first direction, the dispersion forming the input light into an output spectra.

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patent: 5565983 (1996-10-01), Barnard
patent: 6023330 (2000-02-01), Marshall et al.

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