OPTICAL CHAMBER FOR A GAS DETECTION DEVICE

摘要

An optical chamber for a gas detection device, which includes reflecting device for reflecting radiation issued from a radiation source and for redirecting the radiation toward a radiation detector, the reflecting device including a first series of adjacent mirrors and a second series of adjacent mirrors. The mirrors of the first series and the mirrors of the second series are of the truncated ellipsoid of revolution type. The first series of mirrors and the second series of mirrors are arranged relative to each other so that the radiation emitted by the radiation source is reflected alternatively by a mirror of the second series and by a mirror of the first series and defines an optical path extending from the radiation source to the radiation detector.

主权项

1. An optical chamber for a gas detection device, comprising:
reflecting device for reflecting radiation issued from a radiation source and for redirecting said radiation toward a radiation detector; wherein: the reflecting device comprise a first series of adjacent mirrors (Mi) and a second series of adjacent mirrors (M′i); the mirrors (Mi) of the first series and the mirrors (M′i) of the second series have two focal points; the first series of mirrors and the second series of mirrors are arranged relative to each other so that the radiation emitted by the radiation source is reflected alternatively by a mirror (M′i) of the second series and by a mirror (Mi) of the first series and defines an optical path extending from the radiation source to the radiation detector; and the optical chamber comprises two portions fastened to each other, a lower portion in which the mirrors (Mi) of the first series are formed and an upper portion joined to the lower portion and in which the mirrors (M′i) of the second series are formed.