DEVICE FOR SPECTRA MEASUREMENT OF AKH KUPTSOV Russian patent published in 2008 - IPC G01J3/28 

FIELD: physics.

SUBSTANCE: invention is related to research of physico-chemical properties of substances. Device contains source of radiation, flat mirror, focusing system arranged in the form of convex parabolic or convex first hyperbolic mirrors that are installed coaxially along the main optical axis, and concave first elliptical mirror, and collecting system in the form of concave second elliptical mirror coaxial to the main optical axis. Concave first elliptical mirror is made with opening installed on the main optical axis, flat mirror is optically connected with concave first elliptical mirror via convex parabolic or convex first hyperbolic mirror, at that focus of specified parabolic or hyperbolic mirror and first focus of concave first elliptical mirror coincide with each other, and second focus of concave first elliptical mirror coincides with point of crossing of main optical axis and plane of investigated object installation surface, and also with the first focus of concave second elliptical mirror.

EFFECT: elimination of Fresnel diffusion component in spectra of volume diffusive reflection.

10 cl, 10 dwg