US5049751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared rays detecting apparatus
Assignee: Fujitsu Ltd
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Filing: 1990-12-05
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Granted: 1991-09-17
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Expires: 2010-12-05
Abstract
Abstract An infrared rays detecting apparatus is disclosed wherein the area of a loop provided by an element line and a grounding line formed on an inner tube is minimized to reduce an induced electromotive force to minimize production of noises so that correct detection can be accomplished. A grounding line is interposed for each arbitrary number of element lines on a surface of the inner tube, and the element lines are individually connected to output electrodes of an infrared rays sensor of the multi-element type while the individual grounding lines are connected to a common grounding electrode of the infrared rays sensor.
Inventors
- 👤 Yukihiro Yoshida
- 👤 Hirokazu Fukuda
- 👤 Hiroyuki Tsuchida
- 👤 Shigeki Hamashima
- 👤 Koji Hirota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:16
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/02; G01J5/06; G01J5/061; G01J5/10; G01J5/28; G01J2005/283; G01J2005/286; H; H10; H10W; H10W72/00; H10W72/50; H10W72/551; H10W72/552; H10W72/5522
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
162 words
An infrared rays detecting apparatus, comprising: an outer tube having an infrared rays transmitting window; an inner tube accommodated in said outer tube; an infrared rays sensor of the multi-element type carried on said inner tube and having a common grounding electrode and a number of output electrodes corresponding to the number of the elements thereof; a plurality of element lines formed on said inner tube and each connected to a corresponding one of said output electrodes; a plurality of grounding lines formed on said inner tube and connected commonly to said common grounding electrode, said grounding lines being provided such that each of them is interposed between an arbitrary number of ones of said element lines and another arbitrary number of ones of said element lines; low temperature cooling means for cooling said multi-element type infrared rays sensor to a low temperature; and means for extracting signals from said element lines and grounding lines to the outside of said outer tube.
Claim 2
Dependent Claim
162 words
An infrared rays detecting apparatus, comprising: an outer tube having an infrared rays transmitting window; an inner tube accommodated in said outer tube; an infrared rays sensor of the multi-element type carried on said inner tube and having a common grounding electrode and a number of output electrodes corresponding to the number of the elements thereof; a plurality of element lines formed on said inner tube and each connected to a corresponding one of said output electrodes; a plurality of grounding lines formed on said inner tube and connected commonly to said common grounding electrode, said grounding lines being provided such that each of them is interposed between an arbitrary number of ones of said element lines and another arbitrary number of ones of said element lines; low temperature cooling means for cooling said multi-element type infrared rays sensor to a low temperature; and means for extracting signals from said element lines and grounding lines to the outside of said outer tube.
Claim 3
Dependent Claim
21 words
An infrared rays detecting apparatus according to claim 1, wherein said multi-element type infrared rays sensor is made of HgCdTe crystal.
Claim 4
Dependent Claim
20 words
An infrared rays detecting apparatus according to claim 1, wherein said element lines and grounding lines are made of gold.
Claim 5
Dependent Claim
34 words
An infrared rays detecting apparatus according to claim 3, wherein said element lines and grounding lines are formed by laser cutting a deposited gold film formed uniformly by vapor deposition on said inner tube.
Claim 6
Dependent Claim
54 words
An infrared rays detecting apparatus according to claim 1, wherein said signal extracting means includes an annular ceramic substrate extending through said outer tube, a plurality of gold patterns formed on said annular ceramic substrate, and a plurality of gold wires for individually connecting said gold patterns to said element lines or grounding lines.
Claim 7
Dependent Claim
26 words
An infrared rays detecting apparatus according to claim 1, wherein said grounding lines are connected with each other at a bottom portion of said inner tube.
Claim 8
Dependent Claim
26 words
An infrared rays detecting apparatus according to claim 1, wherein said grounding lines are connected with each other at a bottom portion of said inner tube.
Claim 9
Dependent Claim
31 words
An infrared rays detecting apparatus according to claim 1, wherein said grounding lines are connected with each other both at a top portion and a bottom portion of said inner tube.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-16 | 1995-03-18 | 1995-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-16 | 1999-03-18 | 1999-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-16 | 2003-03-18 | 2003-09-17 | $7700.00 | Window Closed / Lapsed |