Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Reexamination Certificate
2007-09-04
2007-09-04
Lauchman, Layla G. (Department: 2877)
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
C356S328000, C356S334000
Reexamination Certificate
active
10833201
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.
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Slutter Warren
Xiao Jian Ming
Brown Rudnick Berlack & Israels LLP
Handal Anthony H.
Horiba Jobin Yvon Inc.
Lauchman Layla G.
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