TWO-COMPONENT GENERAL TRACK INTERFEROMETER Russian patent published in 2018 - IPC G01B9/02 G01N21/45 

FIELD: physics.

SUBSTANCE: device is intended for recording the spatial distribution of the phase delay introduced by an optically transparent micro-object and measuring its characteristics. Device consists of optically coupled and arranged in series the first optical component focusing the radiation carrying the image of the object, the spatial filter, the second optical component forming the collimated object and reference beam, and the matrix radiation detector. First component consists of two lens elements, the smaller of which is located in a hole made in a larger element at a distance from its center that is larger than the diameter of the hole, and in such a position that their back focal planes are aligned. Second component is located on the optical axis of the smaller of the lens elements in the area of overlap of the beams, and its front focal plane is aligned with the rear focal plane of the specified lens element.

EFFECT: alignment of intensity in the reference and object channels, increasing the spectral resolution, simplifying the design and alignment of the device.

3 cl, 1 dwg