Method and apparatus for measuring the frequency of radiation
AssigneeVersatile Integrated Modules
InventorsLeonard C. Van Der Gaag, Allen Hooker, Gerald Puetz
Life of this patent
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Abstract
A method and apparatus for measuring the frequency of radiation is described comprising a pair of filters (2,3) or a beam splitter (30) responsive to radiation from a source of radiation (4) for providing a first output having a magnitude which increases and a second output having a magnitude which decreases with an increase in the frequency of said radiation, a divider (11) for providing a ratio of the magnitudes of said first and second outputs and a comparator (14) and memory (17) responsive to the ratio from said divider (11) for providing an output corresponding to the frequency of said radiation.
Claims19
A frequency measuring apparatus comprising:
- means responsive to radiation from a source of radiation for providing a first output having a magnitude which increases and a second output having a magnitude which decreases with an increase in the frequency of said radiation;
- means providing a third output corresponding to the ratio of the magnitudes of said first and said second outputs;
- and
- means responsive to said third output for providing a discrete output for each one of a plurality of discrete frequencies of said radiation as said frequency of said radiation changes.
A method of measuring the frequency of radiation from a source of radiation comprising the steps of:
- providing a first output having a magnitude which increases and a second output having a magnitude which decreases with an increase in the frequency of said radiation;
- providing a third output corresponding to the ratio of the magnitudes of said first and said second outputs;
- and
- comparing said third output with predetermined values corresponding to pre-selected known frequencies of said radiation for providing an output corresponding to the frequency of said radiation.
Dependencies are inferred from the claim text.