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公开(公告)号：ES2346000T3
公开(公告)日：2010-10-07
申请号：ES06775156
申请日：2006-08-25
Applicant: ABB RESEARCH LTD
Inventor： BRANDLE HUBERT
IPC: F23N5/08
Abstract: Un detector de llamas para controlar una llama que comprende una cámara (5), un sistema de imagen óptico (3, 3a-3d, 6a-6c) para proyectar varias imágenes de dicha llama en diferentes regiones espectrales sobre diferentes regiones espaciales de la cámara (5), al menos un filtro de color (6a, 6b, 6c), caracterizado por que dicho sistema de imagen óptico (2) comprende varios dispositivos de lentes dispuestos lado a lado sobre un plano común, cada dispositivo de lente recibiendo directamente parte de la luz emitida por la llama, y cada dispositivo de lente proyectando una de dichas imágenes sobre una de dichas regiones de la cámara.
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公开(公告)号：AU2003273721A1
公开(公告)日：2004-06-07
申请号：AU2003273721
申请日：2003-11-06
Applicant: ABB RESEARCH LTD
Inventor： BOHNERT KLAUS , GABUS PHILIPPE , BRANDLE HUBERT
IPC: G02B6/44
Abstract: The high-frequency insulator (9) is shaped as a hollow cylinder with a set of circumferential insulating fins (3) on the outside. There is a large voltage difference between the upper (1) and lower (2) ends of the insulator. An optical fiber (4) is threaded through a capillary channel (5) which may run in a spiral from the upper to the lower end. The capillary channel is filled with a protective medium (6).
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公开(公告)号：CA2326960A1
公开(公告)日：2001-06-06
申请号：CA2326960
申请日：2000-11-28
Applicant: ABB RESEARCH LTD
Inventor： GABUS PHILIPPE , BOHNERT KLAUS , BRANDLE HUBERT
Abstract: A method is described for producing a fiberoptic waveguide with a basic segment (11) and a phase shift segment (12), the basic segment (11) and phase shift segment (12) having fiber cores (K) of the same form and the fiber cores being aligned at a defined angle (.alpha.) to one another. In the method, use is made of an optical fiber (1) having a fiber core (K) of the abovenamed form, which fiber is twisted at least approximately by the abovenamed defined angle (.alpha.) and held fixed in this torsional position. Subsequently, a stress-relief zone (13) is heated inside the twisted fiber (1) until the torsion is released inside the stress-relief zone (13) and the basic segment (11) is produced on one side of the stress-relief zone (13) and the phase shift segment (12) is produced on the other side. In this case, the fixing of the torsional position is maintained until after solidification of the stress-relief zone (13).
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公开(公告)号：AU3244099A
公开(公告)日：1999-09-15
申请号：AU3244099
申请日：1999-02-12
Applicant: ABB RESEARCH LTD
Inventor： BOHNERT KLAUS , BRANDLE HUBERT , BODOR PATRICK
Abstract: The subject-matter of the present invention is a wavelength-coded fiber Bragg grating pressure sensor 1 which is suitable, in particular, for use in the case of high pressures and temperatures in oil drill holes. The sensor principle according to the invention is based on the fact that the hydrostatic pressure of a liquid or gaseous medium 11 is converted with the aid of a transducer 1 into a longitudinal fiber elongation or fiber compression. The transducer 1 comprises a measuring or pressure cylinder 7a which exchanges pressure with the medium 11, and a reference cylinder 7b which is shielded from the medium 11 or oppositely pressure-loaded. Temperature-compensated transducers 1 with a temperature-independent Bragg wavelength lambdB can be realized by introducing a suitable temperature dependence of the mechanical prestressing of the pressure sensor fiber 3 by selecting the materials, lengths and arrangements of the fiber holder supports 5a, 5b. A fiber Bragg grating temperature sensor 19, 20 can be provided, in addition. Also specified are transducers 1 with other cylinder arrangements 7a, 7b, and a wavelength-division multiplex configuration with several transducers 1.
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公开(公告)号：CA2326960C
公开(公告)日：2011-04-19
申请号：CA2326960
申请日：2000-11-28
Applicant: ABB RESEARCH LTD
Inventor： BOHNERT KLAUS , BRANDLE HUBERT , GABUS PHILIPPE
Abstract: A method is described for producing a fiberoptic waveguide with a basic segment (11) and a phase shift segment (12), the basic segment (11) and phase shift segment (12) having fiber cores (K) of the same form and the fiber cores being aligned at a defined angle (.alpha.) to one another. In the method, use is made of an optical fiber (1) having a fiber core (K) of the abovenamed form, which fiber is twisted at least approximately by the abovenamed defined angle (.alpha.) and held fixed in this torsional position. Subsequently, a stress-relief zone (13) is heated inside the twisted fiber (1) until the torsion is released inside the stress-relief zone (13) and the basic segment (11) is produced on one side of the stress-relief zone (13) and the phase shift segment (12) is produced on the other side. In this case, the fixing of the torsional position is maintained until after solidification of the stress-relief zone (13).
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Patent Agency Ranking
公开(公告)号：AU2002344910A1
公开(公告)日：2004-02-02
申请号：AU2002344910
申请日：2002-07-12
Applicant: ABB RESEARCH LTD
Inventor： NAEGELE MARKUS , BOHNERT KLAUS , BRANDLE HUBERT
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公开(公告)号：CA2515409A1
公开(公告)日：2003-05-22
申请号：CA2515409
申请日：2003-02-14
Applicant: ABB RESEARCH LTD
Inventor： GABUS PHILIPPE , BRANDLE HUBERT , BOHNERT KLAUS
IPC: G01R15/24
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公开(公告)号：CA2671587A1
公开(公告)日：2008-07-03
申请号：CA2671587
申请日：2006-12-22
Applicant: ABB RESEARCH LTD
Inventor： BRANDLE HUBERT , FRANK ANDREAS , BOHNERT KLAUS
IPC: G01R15/24
Abstract: An electro-optical high-voltage sensor comprises a waveguiding sensing fi ber (12; 12a, 12b) of an electro-optical material. The electrical field of t he voltage to be measured is substantially parallel to the longitudinal axis of the sensing fiber (12; 12a, 12b). The sensing fiber (12; 12a, 12b) carri es two orthogonally polarized light waves, with the applied field affecting the birefringence between the waves. Using an electro-optical waveguiding fi ber (12; 12a, 12b) in this configuration allows to accurately measure the vo ltage between two widely spaced points.
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公开(公告)号：AU2002344911A1
公开(公告)日：2004-02-02
申请号：AU2002344911
申请日：2002-07-12
Applicant: ABB RESEARCH LTD
Inventor： BOHNERT KLAUS , BRANDLE HUBERT , NAEGELE MARKUS
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公开(公告)号：AU2003218858A1
公开(公告)日：2003-11-17
申请号：AU2003218858
申请日：2003-04-29
Applicant: ABB RESEARCH LTD
Inventor： BOHNERT KLAUS , HAROUD KARIM , FRANK ANDREAS , BRANDLE HUBERT
Abstract: High resolution fiber-laser sensor has a double refracting first end reflector (11), a second end reflector (12), a laser amplifying fiber (13), a sensor fiber and mode coupling means (15). A number of longitudinal modes are generated in the fiber laser and interaction of a measurement valve (M) causes a change in the double refraction for the two orthogonal light polarizations. The change causes a change in beat frequency of the laser emission. The first end reflector is detuned with respect to the second end reflector. An Independent claim is made for a method for measurement of a measurement value using an optically pumped fiber laser, whereby detuned end reflectors are used and at least a signal is detected and evaluated with said signal composed of exactly two longitudinal modes based on their polarization and transverse spatial structure.
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