Patent ID: 8773663
Filing Date: 2014-07-08
Classification: G01J,G01N,H01S

Abstract:
1. A luminous unit for an optical gas detector, comprising: a light source for linearly polarised light radiation; and a housing with an exit window; wherein: a wavelength of the light radiation radiated from the light source is tunable; the light source is arranged in the housing such that the main emission direction (OA) of the light source encloses an inclination angle (φ) of between 10° and 50° with a normal (N) to the main extension plane (HE) of the exit window; and the light source is oriented about the main emission direction such that the direction of polarisation (P) of the light radiation encloses a rotation angle (θ) of between 22.5° and 67.5° with the plane of incidence on the exit window.