Patent ID: 7242508
Filing Date: 2007-07-10
Classification: G01J

Abstract:
1. An infrared modulator for spectrometer, comprising a light source; a beam splitter for splitting the light from the source into two beams; a first plane mirror for directing the light of the first beam; a second plane mirror for directing the light of the second beam, a first cube corner mirror formed of three mirrors perpendicular to each other for turning the light directed by the first plane mirror back to the first plane mirror; a second cube corner mirror formed of three mirrors perpendicular to each other for turning the light directed by the second plane mirror back to the second plane mirror, the first and second cube corner mirrors being arranged on a common optic axis to reflect into opposite directions and movable back and forth in the direction of said optic axis; and a support structure formed by one uniform material piece for supporting the beam splitter and the first and second plane mirrors.