METHOD OF DETERMINING HOMOGENEITY OF UNIAXIAL CRYSTALS Russian patent published in 2019 - IPC G01B9/00 

FIELD: optics.

SUBSTANCE: invention relates to optics, specifically to methods for determining optical homogeneity and detecting structural defects of optical crystals, and can be used to control quality of uniaxial crystals. Invention objective is to develop a method for determining the uniformity degree of uniaxial crystals, which enables to determine their suitability for use in electrooptic and acoustooptic devices. Summary: analysis is carried out using specialized software registered by laser conoscopy in different positions of sample relative to optical system of interference patterns, while in the process of performing pixel-by-pixel subtraction of the obtained images from each other on RGB parameters to form a resultant array of values, from said array, determining the number of pixels with RGB values (0,0,0), calculating a ratio k of said amount of N₀ to total number of pixels of obtained image N, where k=1 characterizes homogeneity of ideal crystal.

EFFECT: high accuracy of measuring uniformity of optical elements, detection of defect areas with negligible refractive index.

1 cl, 5 dwg