Document Type and Number:
Japanese Patent JPS4890283
Kind Code:
A
Abstract:
A multiple pass optical absorption cell of the type having a pair of objective mirrors and a field mirror, all having substantially the same radius of curvature and with the entrance and exit windows positioned to one side of the field mirror. In this invention, the two objective mirrors are positioned on a common mount with a fixed predetermined distance separating their centers of curvature. Path length is changed by rotation of the common mount, whereby the distance between the centers of curvature remains fixed.
Application Number:
JP11723872A
Publication Date:
November 24, 1973
Filing Date:
November 24, 1972
Export Citation:
International Classes:
B01L3/00; G01N21/03; G01N21/05; (IPC1-7): G01N21/16