Using a fixed-frequency oscillation in a dispersive...

Details Using a fixed-frequency oscillation in a dispersive... Using a fixed-frequency oscillation in a dispersive...

2008-04-08

2008-04-08

Lauchman, Layla G. (Department: 2877)

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

C356S328000

Reexamination Certificate

active

07355705

ABSTRACT:
A method for measuring scene inhomogeneity includes the steps of directing radiance of a scene into a dispersive spectrometer, and changing the field-of-view (FOV) of the spectrometer, while directing the radiance of the scene into the spectrometer. The method then processes the radiance of the scene to obtain a signal. The method also includes measuring an amplitude of the signal and determining scene inhomogeneity based on the measured amplitude of the signal. The method may include uniformly oscillating the FOV of the spectrometer and, next, obtaining a sinusoidal signal, based on uniformly oscillating the FOV of the spectrometer.

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