US3887471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmitting power meter for measurement of radiation
Assignee: Solon Technologies Inc
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Filing: 1974-02-19
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Granted: 1975-06-03
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Expires: 1994-02-19
Abstract
Abstract A power meter for measuring radiation is disclosed, which includes: a partially transmitting body able to absorb some fraction of radiation incident on the body and to re-emit absorbed energy; and, pyrometric means lying outside the path of incident radiation, for measuring radiation emitted by the body. The amount of emitted radiation is proportional to the intensity of incident radiation. The characteristics of a beam of ultraviolet, visible or infrared radiation are substantially unaffected by transmission through the body, thus permitting use of the beam while it is either continuously or discontinuously monitored.
Inventors
- 👤 Suzanne C Stotlar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:20
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/58
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
80 words
A TRANSMITTING POWER METER FOR MEASURINNG THE ENERGY LEVEL OF RADIANT ENERGY COMPRISING IN COMBINATION, A PARTIALLY TRANSMITTING CRYSTALLINE MASS OF MATERIAL HAVING A PRESELECTED COEFFICIENT OF ABSORPTION SUFFICIENT TO GENERATE A SENSIBLE THERMAL SIGNAL WITHIN SAID CRYSTALLINE MASS WITH THE WAVELENGTH OF RADIATION TO BE MEASURED, AND, RESPONSIVELY DISPOSED IN SPACED APART RELATIONSHIP THEREWITH, A THERMAL SENSOR FOR SENSING AND MEASURING SAID THERMAL SIGNAL GENERATED WITHIN SAID CRYSTALLINE MASS WHEN SAID RADIANT ENERGY IS INTERCEPTED BY SAID CRYSTALLINE MASS.
Claim 2
Dependent Claim
80 words
A TRANSMITTING POWER METER FOR MEASURINNG THE ENERGY LEVEL OF RADIANT ENERGY COMPRISING IN COMBINATION, A PARTIALLY TRANSMITTING CRYSTALLINE MASS OF MATERIAL HAVING A PRESELECTED COEFFICIENT OF ABSORPTION SUFFICIENT TO GENERATE A SENSIBLE THERMAL SIGNAL WITHIN SAID CRYSTALLINE MASS WITH THE WAVELENGTH OF RADIATION TO BE MEASURED, AND, RESPONSIVELY DISPOSED IN SPACED APART RELATIONSHIP THEREWITH, A THERMAL SENSOR FOR SENSING AND MEASURING SAID THERMAL SIGNAL GENERATED WITHIN SAID CRYSTALLINE MASS WHEN SAID RADIANT ENERGY IS INTERCEPTED BY SAID CRYSTALLINE MASS.
Claim 3
Dependent Claim
80 words
A transmitting power meter for measuring the energy level of radiant energy comprising in combination, a partially transmitting crystalline mass of material having a preselected coefficient of absorption sufficient to generate a sensible thermal signal within said crystalline mass with the wavelength of radiation to be measured, and, responsively disposed in spaced apart relationship therewith, a thermal sensor for sensing and measuring said thermal signal generated within said crystalline mass when said radiant energy is intercepted by said crystalline mass.
Claim 4
Dependent Claim
80 words
A transmitting power meter for measuring the energy level of radiant energy comprising in combination, a partially transmitting crystalline mass of material having a preselected coefficient of absorption sufficient to generate a sensible thermal signal within said crystalline mass with the wavelength of radiation to be measured, and, responsively disposed in spaced apart relationship therewith, a thermal sensor for sensing and measuring said thermal signal generated within said crystalline mass when said radiant energy is intercepted by said crystalline mass.
Claim 5
Dependent Claim
76 words
A transmitting power meter for measuring the intensity of a beam of radiant energy comprising a relatively high transmittance crystalline material, having a coefficient of absorption less than about 0.5 per cm. for the wavelength of radiation to be intercepted, and sufficient thickness to generate a measurable thermal signal within said crystalline material, and, pyroelectric detector means, including associated electrical circuitry, temperature-responsively disposed in spaced apart relationship with said crystalline material, to measure said temperature increase.
Claim 6
Dependent Claim
76 words
A transmitting power meter for measuring the intensity of a beam of radiant energy comprising a relatively high transmittance crystalline material, having a coefficient of absorption less than about 0.5 per cm. for the wavelength of radiation to be intercepted, and sufficient thickness to generate a measurable thermal signal within said crystalline material, and, pyroelectric detector means, including associated electrical circuitry, temperature-responsively disposed in spaced apart relationship with said crystalline material, to measure said temperature increase.
Claim 7
Dependent Claim
18 words
The transmitting power meter of claim 2 wherein said coefficient of absorption is less than 0.1 per cm.
Claim 8
Dependent Claim
19 words
The transmitting power meter of claim 2 wherein said relatively high transmittance crystalline material is a crystalline ionic solid.
Claim 9
Dependent Claim
22 words
The transmitting power meter of claim 2 wherein said wavelength is in the range from about 400 A to about 15 microns.
Claim 10
Dependent Claim
28 words
The transmitting power meter of claim 4 wherein said crystalline ionic solid is selected from the group consisting of the alkaline earth metal halides and alkali metal halides.
Claim 11
Dependent Claim
93 words
A transmitting power meter for measuring the intensity of a beam of radiant energy of a first wavelength comprising a relatively high transmittance crystalline material having an absorbance for said first wavelength less than about 1 percent per cm. thickness of said material in the direction of said beam, and sufficient thickness to generate a thermal signal in said material sufficient to emit energy of a second wavelength, and, pyroelectric detector means, including associated electrical circuitry, temperature-responsively disposed in spaced apart relationship with said material, to measure said energy of said second wavelength.
Claim 12
Dependent Claim
93 words
A transmitting power meter for measuring the intensity of a beam of radiant energy of a first wavelength comprising a relatively high transmittance crystalline material having an absorbance for said first wavelength less than about 1 percent per cm. thickness of said material in the direction of said beam, and sufficient thickness to generate a thermal signal in said material sufficient to emit energy of a second wavelength, and, pyroelectric detector means, including associated electrical circuitry, temperature-responsively disposed in spaced apart relationship with said material, to measure said energy of said second wavelength.
Claim 13
Independent Claim
76 words
A method for measuring the energy of a beam of radiant energy comprising continuously intercepting said beam with a partially transmitting mass of crystalline material having a coefficient of absorption substantially less than 1 per cm., said mass having a thickness sufficient to permit a temperature increase within said mass, measuring said temperature increase with a thermal sensor responsively disposed in spaced apart relationship therewith, and correlating said temperature increase with the power of said beam.
Claim 14
Independent Claim
76 words
A method for measuring the energy of a beam of radiant energy comprising continuously intercepting said beam with a partially transmitting mass of crystalline material having a coefficient of absorption substantially less than 1 per cm., said mass having a thickness sufficient to permit a temperature increase within said mass, measuring said temperature increase with a thermal sensor responsively disposed in spaced apart relationship therewith, and correlating said temperature increase with the power of said beam.
References Cited (Backward Citations)
US3487685A
Cited
US3571592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |