| 摘要 |
The invention comprises a gas sensor (1), designed to enable a measurement o f a gas sample that is enclosed in a cavity (2), having the shape of a block (50); the wall or wall sections of the cavity exhibiting highly-reflective properties for light. Said cavity contains means (51) for incoming rays of light, and means (52) for outgoing rays of light. Said cavity (2) exhibits opposing surface sections (55a, 56a, 57a) that are designed and coordinated so that incoming rays of light (60) are arranged to pass - without reflecting, or without appreciably reflecting within a plane (the x-z plane) - across said cavity (2) to a concave mirror surface (55a) that is oriented in a right ang le to the plane; that said rays of light are arranged to pass reflected across said cavity (2) in a plane of the mirror surface to the other surfaces (56a, 57a), thereby forming a measuring path before the reflected beams of light a re aimed towards said means (52) for exiting light.
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