Patent US4027974A successfully refreshed from Google Patents.
US4027974A
Expired / Lapsed
US
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Optical frequency processor
Assignee: Individual
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Filing: 1975-12-05
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Granted: 1977-06-07
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Expires: 1995-12-05
Abstract
Abstract A system for determining the frequency or related characteristic of radiation on a continuous real-time basis includes a prism producing a chromatic dispersion and having two exit paths. One light in one path is attenuated by a constant attenuation factor, the light is attenuated by a constant attenuation factor, the light in the other path is attenuated by a factor that is position determinative. Detectors in each path produce an anolog of the intensities thereof which is processed in accordance with a predetermined function to yield the frequency of the radiation.
Inventors
- 👤 Jon H. Bumgardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:15
CPC Classifications
G; G01; G01J; G01J9/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
185 words
An optical source frequency processor, comprising: dispersion means fixedly mounted on intercept a beam of radiant energy for providing spatial redirection according to the frequency of beam of radiant energy incident thereon so as to produce a chromatically dispersed output therefrom; optical means with respect to said dispersion means fixedly positioned so as to intercept the output thereof for spliting said spatially redirected radiant energy into a plurality of beams; first modifying means fixedly positioned with respect to said optical means for uniformly attenuating one of said plurality of beams; second modifying means fixedly positioned with respect to said dividing means for attenuating another of said plurality of beams an amount having a predetermined relationship with the amount of spatial redirection introduced by said dispersion means; detector means fixedly positioned with respect to said first and second modifying means for separately detecting each of said attenuated beams and providing separate outputs responsive to the intensity of each of said attenuated beams; and means for processing said outputs effectively connected to said detector means to provide an output definitive of a characteristic of said radiant energy.
Claim 2
Dependent Claim
185 words
An optical source frequency processor, comprising: dispersion means fixedly mounted on intercept a beam of radiant energy for providing spatial redirection according to the frequency of beam of radiant energy incident thereon so as to produce a chromatically dispersed output therefrom; optical means with respect to said dispersion means fixedly positioned so as to intercept the output thereof for spliting said spatially redirected radiant energy into a plurality of beams; first modifying means fixedly positioned with respect to said optical means for uniformly attenuating one of said plurality of beams; second modifying means fixedly positioned with respect to said dividing means for attenuating another of said plurality of beams an amount having a predetermined relationship with the amount of spatial redirection introduced by said dispersion means; detector means fixedly positioned with respect to said first and second modifying means for separately detecting each of said attenuated beams and providing separate outputs responsive to the intensity of each of said attenuated beams; and means for processing said outputs effectively connected to said detector means to provide an output definitive of a characteristic of said radiant energy.
Claim 3
Dependent Claim
12 words
The processor of claim 1 wherein said dispersion means is a prism.
Claim 4
Dependent Claim
32 words
The processor of claim 2 wherein said processing means is a divider for dividing the detected output responsive to one of said uniquely attenuated beams by the detected output of the other.
Claim 5
Dependent Claim
90 words
The processor of claim 2 wherein said processing means comprises frequency from ##EQU2## where f is the frequency of said radiation from said source, f max is the known upper designed operating frequency of the system, f min is the known lower designed operating frequency of the system, e a is the signal magnitude of the detected output responsive to the beam attenuated by the filter having said invariant attenuation factor, and e b is the signal magnitude of the detected output responsive to another of said uniquely attenuated beams.
Claim 6
Dependent Claim
39 words
The processor of claim 1 in which said first modifying means is an optical attenuator with a uniform characteristic which reduces the intensity of a beam passed thereby by an amount which is independent of the interception point thereon.
Claim 7
Dependent Claim
43 words
The processor of claim 1 in which said second modifying means is an optical attenuator with a transmission characteristic which reduces the intensity of a beam passed thereby by an amount which is a function of the interception point of the beam thereon.
Claim 8
Dependent Claim
18 words
The processor of claim 6 in which said optical attenuator is a monotonic increasing uniformly throughout its extent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |