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Håkon
Håkon Sagberg, Oslo NO
| Patent application number | Description | Published |
|---|---|---|
| 20080273208 | Interference Filter - This invention relates to an interference filter, especially for use in gas detection with infrared light within a chosen range, comprising at least two essentially parallel and partially reflective surfaces with a chosen distance between them thus defining a cavity delimited by the reflecting surfaces between which the light may oscillate, and wherein at least one of said surfaces is partially transparent for transmission of light to or from said cavity. The filter comprises a first transparent material having a high refractive index, e.g. silicon, positioned in at least a part of said cavity, and at least one of said reflective surfaces being divided into a three dimensional pattern with varying shift relative to its plane, thus to provide a position dependent resonance condition between them for separation of different wavelengths in the light. | 11-06-2008 |
| 20100219960 | Detector System and Method to Detect or Determine a Specific Gas Within a Gas Mixture - To achieve gas detection in a precise and reliable way, but at the same time without consuming too much energy, a gas detection system is provided which generally comprises a pair of two different gas detectors. The first detector (D | 09-02-2010 |
| 20110013189 | Adjustable Interference Filter - The present invention relates to an adjustable interference filter, especially for use in gas detection with infrared light within a chosen range, comprising at least two essentially parallel reflective surfaces separated by a chosen distance defining a cavity delimited by the reflective surfaces between which the light may oscillate, and at least one of said surfaces being semitransparent for transmission of light to or from the cavity. The filter comprises a transparent material with a chosen thickness and having a high refractive index positioned in the cavity, and adjustable separation means for adjusting the cavity length between the reflecting surfaces, so as to obtain a cavity constituted by the transparent, high refractive index material and a an adjustable part. | 01-20-2011 |
Håkon Sagberg, Oslo NO
| Patent application number | Description | Published |
|---|---|---|
| 20110013189 | Adjustable Interference Filter - The present invention relates to an adjustable interference filter, especially for use in gas detection with infrared light within a chosen range, comprising at least two essentially parallel reflective surfaces separated by a chosen distance defining a cavity delimited by the reflective surfaces between which the light may oscillate, and at least one of said surfaces being semitransparent for transmission of light to or from the cavity. The filter comprises a transparent material with a chosen thickness and having a high refractive index positioned in the cavity, and adjustable separation means for adjusting the cavity length between the reflecting surfaces, so as to obtain a cavity constituted by the transparent, high refractive index material and a an adjustable part. | 01-20-2011 |
Håkon Skofteland, Jar NO
| Patent application number | Description | Published |
|---|---|---|
| 20090266553 | APPARATUS AND METHOD FOR PREVENTING THE PENETRATION OF SEAWATER INTO A COMPRESSOR MODULE DURING LOWERING TO OR RETRIEVAL FROM THE SEABED - An apparatus for preventing seawater from penetrating into a compressor module during lowering to or retrieval from a compression plant on the seabed, with optional discharge of residual production fluids, as for instance hydrocarbons, from the compressor module prior to retrieval, wherein the compressor module comprises an electric motor ( | 10-29-2009 |
| 20090317265 | METHOD AND APPARATUS FOR PROTECTION OF COMPRESSOR MODULES AGAINST INFLUX OF CONTAMINATED GAS - A method for protection of compressor modules against undesirable influx of contaminated gas, comprising a pressure housing ( | 12-24-2009 |
Håkon Skofteland, Jar NO
| Patent application number | Description | Published |
|---|---|---|
| 20090317265 | METHOD AND APPARATUS FOR PROTECTION OF COMPRESSOR MODULES AGAINST INFLUX OF CONTAMINATED GAS - A method for protection of compressor modules against undesirable influx of contaminated gas, comprising a pressure housing ( | 12-24-2009 |