EP0069930A1
Expired / Lapsed
EP
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Monitor device for laser systems transmitting laser light through optical fibers
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1982-07-01
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Granted: —
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Expires: 2002-07-01
Abstract
Abstract A monitor device for use in a laser system transmitting laser light through an optical fiber includes a heat-sensitive element which produces an output to monitor the laser system, the element being provided in a predetermined area of the fiber.
Inventors
- 👤 Katsuyoshi Sunago
- 👤 Shinya Takenaka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 13:15
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; G; G01; G01K; G01K17/00; G01K17/003; G01M; G01M11/00; G01M11/30; H; H01; H01S; H01S3/00; H01S3/0014; H02; H02H; H02H5/00; H02H5/04; A61B17/00; A61B2017/00017; A61B2017/00115; A61B2017/00119; A61B2018/00636; A61B2018/00898; A61B18/22; A61B2018/2247
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
37 words
A monitor device for a laser system transmitting laser light through an optical fiber, comprising; heat-sensitive means for producing an output to monitor the laser system, said means being provided at a predetermined area of the fiber.
Claim 2
Dependent Claim
37 words
A monitor device for a laser system transmitting laser light through an optical fiber, comprising; heat-sensitive means for producing an output to monitor the laser system, said means being provided at a predetermined area of the fiber.
Claim 3
Dependent Claim
23 words
A monitor device according to claim 1, further including an abnormality detection circuit receiving an output of said heat-sensitive element,for actuating safety means.
Claim 4
Dependent Claim
27 words
A monitor device according to claim 2, wherein said abnormality detector circuit includes means for detecting both an abnormal increase and an abnormal decrease in laser power.
Claim 5
Dependent Claim
67 words
A monitor device according to claims 1, 2 or 3, wherein said heat-sensitive means includes a plurality of heat-sensitive elements positioned at a plurality of locations in a longitudinal direction of the fiber; said monitor device further including circuit means for detecting a difference or differences in the outputs from the respective heat-sensitive elements, to determine which part of the laser system is in a abnormal state.
Claim 6
Dependent Claim
13 words
A monitor device according to claim 2, said safety means including alarm means.
Claim 7
Dependent Claim
13 words
A monitor device according to claim 2, said safety means including indication means.
Claim 8
Dependent Claim
16 words
A monitor device according to claim 2, said safety means including a laser oscillation deactivation circuit.
References Cited (Backward Citations)
CA1093858A
Cited
DE3143421A1
Cited
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