Patent ID: 7460234
Filing Date: 2008-12-02
Classification: G01N

Abstract:
1. A light scattering detector device, comprising: a detection cell to accept particles suspended in a gas stream and permit a polarized beam to pass through a trajectory of the particles and gas stream; a sample light detector disposed to detect light scattered in the detection cell; a sample compound lens collector to direct light scattered in the detection cell upon the sample light detector; a spherical mirror to direct light scattered in the detection cell to the compound lens collector; a light trap that accepts the polarized beam after it passes through the detection cell, the light trap including, a reference cell through which the polarized beam passes before the polarized beam is accepted by said light trap; a reference light detector; a reference cell compound lens collector to direct light scattered in the reference cell upon the reference light detector; and a spherical mirror to direct light scattered in the reference cell to the reference cell compound lens collector.