Sintef

Sinvent As

Henrik Rogne

Dag Thorstein Wang

Alain Ferber

Ib-Rune Johansen

Sigurd Teodor Moe

Trond Andreas Hansen

Olav Solgaard

Håkon Sagberg

Odd Løvhaugen

Britta Fismen

Ralph William Bernstein

Berit Sundby Avset

Hakon Sagberg

A sealed infrared radiation source includes an emitter membrane stimulated by an electrical current conducted through the membrane, which acts like an electrical conductor, wherein the membrane is mounted between first and second housing parts, at least one being transparent in the IR range, each housing part defining a cavity between the membrane and the respective housing part of each side of the membrane. The housing parts are at least partially electrical conductive, and a first of the housing parts is electrically coupled to a first end of the electrical conductor and insulated from the second end of the electrical conductor, the second housing part being electrically coupled to a second end of the electrical conductor and being insulated from the first end of the electrical conductor, thus allowing a current applied from the first housing part to the second housing part to pass through and heat the membrane.

Infrared source

The invention relates an optical displacement sensor element comprising two essentially flat surfaces () being separated by a cavity defined by a spacer () and the surfaces (), the distance between the surfaces being variable, wherein a first of said surfaces () is positioned on an at least partially transparent carrier () and being provided with a reflective pattern, the pattern constituting a pattern being shaped as a diffractive lens, and said second surface () being a reflective surface.

Optical displacement sensor element

This invention relates to an optical displacement sensor element, e.g. for use in a pressure sensor or a microphone, comprising two essentially flat surfaces being separated by a cavity being defined by a spacer, the distance between the surfaces being variable thus providing a displacement sensitive Fabry-Perot interferometer. Both of said surfaces are at least partially reflective, and in that said first surface is provided with at least one optical detector, and one of surfaces being provided on an at least partially transparent material.

Optical displacement sensor

A system and corresponding method for bulge testing films (e.g. thin films, coatings, layers, etc.) is provided, as well as membrane structures for use in bulge testing and improved methods of manufacturing same so that resulting membrane structures have substantially identical known geometric and responsive characteristics. Arrayed membrane structures, and corresponding methods, are provided in certain embodiments which enable bulge testing of a film(s) over a relatively large surface area via a plurality of different free-standing membrane portions. Improved measurements of film bulging or deflection are obtained by measuring deflection of a center point of a film, relative to non-deflected peripheral points on the film being tested. Furthermore, membrane structures are adhered to mounting structure in an improved manner, and opaque coatings may be applied over top of film(s) to be bulge tested so that a corresponding optical transducer can more easily detect film deflection/bulging. In certain embodiments, a laser triangulation transducer is utilized to measure film deflection/bulging.

Sensor element especially for pressure sensors

Growing community of inventors

Oslo, Norway

Henrik Rogne