Patent ID: 6016203
Filing Date: 2000-01-18
Classification: G01J,G01N

Abstract:
A gas sensor, designed to enable a measurement of a gas sample that is enclosed in a cavity (2), having the shape of a block; the wall or wall sections of the cavity exhibiting highly-reflective properties for light; said cavity containing means (51) for incoming rays of light (60), where said rays of light are arranged to pass reflected across said cavity (2), thereby forming an optical measuring path before the reflected beams of light are aimed towards means (52) for exiting rays of light, characterised in that said cavity (2) exhibits opposing surface sections (2a, 2b) that are designed and coordinated so close together that incoming rays of light (60) are arranged to pass in a plane--without reflecting, or without appreciably reflecting--across said cavity (2) to a concave mirror surface (55a, 56a, 57a) that is oriented in a right angle to the plane and that reflected beams of light are converging at said means (52) for exiting rays of light.