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US 4,304,491 AGranted
Single sensor spectrometer with high spatial and temporal resolution
AssigneeInternational Telephone and Telegraph Corporation
InventorsRobert J. Kraushaar, Robert Mays, John J. Stapleton
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Abstract
A spectrometer for use with optical elements which pass both undispersed and dispersed irradiation onto detectors coupled to a transversal filter and a comparitor means which open gates said filter to receive dispersed signals when an initial undispersed threshold is exceeded, thereafter said comparitor inhibits signals exceeding the undispersed threshold during spectral analysis of the dispersed signals.
Claims5
A spectrometer for use with optical elements which pass both undispersed and dispersed irradiation onto detectors, comprising:
- an irradiation detector capable of receiving dispersed and undispersed irradiation and providing an output signal proportional to said irradiation, with a first signal proportional to the undispersed irradiation and a second signal proportional to dispersed radiation;
- a filter means having an input coupled to said detector and adapted to receive a signal therefrom for spectral analysis;
- a comparitor means having a first threshold level relative to the first signal and a second threshold level relative to the second signal and coupled to said detector and filter means, said comparitor means being capable of open gating the filter means for spectral analysis when the first signal exceeds the first threshold level and close gating the filter means inhibiting the passing of the first signal thereto when the second threshold level is exceeded during spectral analysis;
- and
- wherein in operation of the device when a first signal exceeds the first threshold level, the filter means is open gated to receive second signals but closed gated by the comparator rom receiving first signals.
2 more elements
Dependencies are inferred from the claim text.