Title:
DOUBLE GRATING THREE DIMENSIONAL SPECTROGRAPH WITH MULTI-DIRECTIONAL DIFFRACTION
Document Type and Number:
WIPO Patent Application WO2005106411
Kind Code:
B1
Abstract:
A spectrograph with a first concave spectrographic diffraction grating is positioned to receive light from an input light source. The first concave spectrographic diffraction grating is configured to provide a diffracted light output dispersing the components of the input light source in a first dispersion direction with a first angular orientation with respect to the plane of the grating. The dispersion forms the input light into an intermediate spectrum. The intermediate spectrum 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 diffraction direction with a second angular orientation with respect to the plane of the grating. The second dispersion angular orientation is different from the first dispersion angular orientation. The second dispersion forms the input light into an output spectrum.
Inventors:
SLUTTER WARREN S (US)
XIAO JIAN MING (US)
XIAO JIAN MING (US)
Application Number:
PCT/US2005/013910
Publication Date:
December 29, 2005
Filing Date:
April 22, 2005
Export Citation:
Assignee:
HORIBA JOBIN YVON INC (US)
SLUTTER WARREN S (US)
XIAO JIAN MING (US)
SLUTTER WARREN S (US)
XIAO JIAN MING (US)
International Classes:
G01J3/04; G01J3/18; G01N21/64; (IPC1-7): G01J3/18; G01N21/64
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