Senseair Ab

Asahi Kasei Microdevices Corporation

Amic Ab

Hans Martin

Bertil Hök

Lars Rune Lundbladh

Ove &Ouml;hman

Henrik Rödjegård

Maksym Bryzgalov

Jonas Ljungblad

Henrik Rodjegard

Mats Olsson

A gas sensor () is described comprising a light source (), and a detector (), a first reflector (), which is concave and arranged to reflect and concentrate light emitted from the light source () to a first light spot (), and an interference filter (). The gas sensor comprises a second reflector (), a third reflector (), which is concave, and a reflector base () with a dome shaped surface () with the first and third reflectors facing the light source () and the detector (). During operation of the gas sensor (), the detector () is illuminated by light from the light source (), which in an optical path from the light source () has been reflected at least once in each one of the first reflector (), the second reflector (), and the third reflector (). The gas sensor () is configured for detection of a first wavelength portion of the light.

Gas sensor with long absorption path length

The present invention is directed to a gas detector configured to improve response speed of a gas sensor. A gas detector includes a housing, a gas sensor main body installed in the housing, and a partition wall provided in the housing and limiting the surrounding of the gas sensor main body to separate from the other area. The housing or the partition wall includes an opening portion directly connected from the outside to an area inside the partition wall.

Gas detector

A multi-channel gas sensor comprising a gas cell (), a light source (), a first interference filter (), a first detection unit () and a second detection unit (). The light source () is arranged to emit light radiation into the gas cell (). The first detection unit () is arranged to detect light from the light source, that has propagated through at least a part of the gas cell (), and that has been transmitted through the first interference filter (). The second detection unit () is arranged to be illuminated by light from the light source that has been reflected in the first interference filter () and then has propagated through the gas cell () before illuminating the second detection unit and to detect at least a second wavelength portion of said light that has been reflected in the first interference filter.

Multi-channel gas sensor

Method for the manufacturing of a mould body and a mould body manufactured according to the method

Growing community of inventors

Delsbo, Sweden

Hans Martin