US3733130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slotted probe for spectroscopic measurements
Assignee: United States Atomic Energy Commission
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Filing: 1972-03-07
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Granted: 1973-05-15
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Expires: 1992-03-07
Abstract
Abstract A device is provided for conducting colorimetric or absorption spectral measurements which consists of a transparent material of proper index of refraction and having a geometrical design such that an entering beam of light into the material is totally reflected internally so as to proceed from an entering point into and through a sample system of known dimensions whereupon said beam emerges from said material through a single sealable opening and is transmitted to a conventional detector where spectral measurements are carried out in a normal manner.
Inventors
- 👤 J Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:15
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/85; G01N21/8507
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
192 words
A device for conducting colorimetric or absorption spectral measurements in a sample material comprising an immersible, optical, elongated probe adapted to be immersed in said sample material, said probe being provided with a side slot which receives therein a portion of said sample material, said probe being constructed in such a manner that a light beam entering one end thereof at a given angle is totally reflected internally from the walls and the end of said probe so as to proceed from said one end and through said probe and said sample material within said slot whereupon said beam emerges from said one end of said probe at a different angle from said entering light beam, said probe side slot being positioned at a desired slanted angle in said probe such that said reflected light beam enters said slot at a point normal to a side wall of said slot, and a detector positioned adjacent to said one probe end for receiving said emergent beam from said probe, said detector providing an output signal indicative of the degree of absorption of said light beam by said sample material within said probe slot.
Claim 2
Independent Claim
192 words
A device for conducting colorimetric or absorption spectral measurements in a sample material comprising an immersible, optical, elongated probe adapted to be immersed in said sample material, said probe being provided with a side slot which receives therein a portion of said sample material, said probe being constructed in such a manner that a light beam entering one end thereof at a given angle is totally reflected internally from the walls and the end of said probe so as to proceed from said one end and through said probe and said sample material within said slot whereupon said beam emerges from said one end of said probe at a different angle from said entering light beam, said probe side slot being positioned at a desired slanted angle in said probe such that said reflected light beam enters said slot at a point normal to a side wall of said slot, and a detector positioned adjacent to said one probe end for receiving said emergent beam from said probe, said detector providing an output signal indicative of the degree of absorption of said light beam by said sample material within said probe slot.
Claim 3
Dependent Claim
21 words
The device set forth in claim 1, wherein said sample material is a process stream which flows through said probe slot.
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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |