US6122041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid cooled light pipe assembly for pyrometric temperature measurement
Assignee: Texas Instruments Inc
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Filing: 1997-10-01
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Granted: 2000-09-19
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Expires: 2017-10-01
Abstract
Abstract A liquid cooled light pipe is disclosed which allows effective pyrometric temperature measurements using a remote detector. Temperature of the light pipe assembly is controlled and maintained at an approximately constant value in order to establish good long-term temperature measurement accuracy. The temperature-controlled light pipe assembly of this invention can be used for multi-point temperature measurements of a heated body with good spatial resolution for real-time multi-zone temperature control applications.
Inventors
- 👤 Habib Najm
- 👤 Mehrdad M. Moslehi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:57
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/02; G01J5/06; G01J5/061
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
83 words
A temperature-controlled light pipe assembly for multi-zone optical sensing applications comprising: a light transmitting fiber, a detector at a first end of said light transmitting fiber, a sensing tip at a second end of said light transmitting fiber, a first tube for holding said light transmitting fiber, a second tube concentric with said first tube for holding a liquid to cool said light transmitting, and a spacer at said first and second ends, wherein said spacer is tapered at at least one end.
Claim 2
Dependent Claim
83 words
A temperature-controlled light pipe assembly for multi-zone optical sensing applications comprising: a light transmitting fiber, a detector at a first end of said light transmitting fiber, a sensing tip at a second end of said light transmitting fiber, a first tube for holding said light transmitting fiber, a second tube concentric with said first tube for holding a liquid to cool said light transmitting, and a spacer at said first and second ends, wherein said spacer is tapered at at least one end.
Claim 3
Dependent Claim
83 words
A temperature-controlled light pipe assembly for multi-zone optical sensing applications comprising: a light transmitting fiber; a detector at a first end of said light transmitting fiber; sensing tip at a second end of said light transmitting fiber; a first tube for holding said light transmitting fiber; and a second tube concentric with said first tube for holding a liquid to cool said light transmitting fiber, wherein said light transmitting fiber mounts within said assembly via O-rings located near opposite ends of said assembly.
Claim 4
Dependent Claim
83 words
A temperature-controlled light pipe assembly for multi-zone optical sensing applications comprising: a light transmitting fiber; a detector at a first end of said light transmitting fiber; sensing tip at a second end of said light transmitting fiber; a first tube for holding said light transmitting fiber; and a second tube concentric with said first tube for holding a liquid to cool said light transmitting fiber, wherein said light transmitting fiber mounts within said assembly via O-rings located near opposite ends of said assembly.
References Cited (Backward Citations)
EP0085143A2
Cited
US5092680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-09-19 | 2004-03-20 | 2004-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-09-19 | 2008-03-20 | 2008-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-09-19 | 2012-03-20 | 2012-09-19 | $7700.00 | Window Closed / Lapsed |