METHOD OF PRODUCING INFRARED FIBER ASSEMBLIES BASED ON SILVER HALIDE LIGHT GUIDES Russian patent published in 2019 - IPC G02B6/04 

FIELD: physics.

SUBSTANCE: invention relates to production of infrared fiber assemblies of silver-halide light guides intended for transfer of thermal image in middle infrared range (2–20 mcm) and required for use in industrial and medical thermography in order to visualize distribution of thermal field from a remote object. Method of producing infrared fiber assemblies based on silver-halide light guides involves obtaining light guides by extrusion from monocrystals of solid solutions of silver chloride-bromide and packing them into a hexagonal structure. Workpiece with diameter of 14–16 mm and height of 15–20 mm is preliminarily cut from the monocrystal, after which a polycrystalline workpiece with grain size of 500–600 nm, diameter of 3 mm, length of 430±5 mm is produced by extrusion. Then, it is extruded for production of single-layer light guides with diameter of 100 microns with grain size of 50–60 nm, of which a hexagonal structure of light-emitting diodes 19, 37 and 61 is formed by mechanical assembly with subsequent compaction thereof, diameters of the assemblies being equal to 500, 700, 900 mcm and length of 2.7±0.3 m. Light guides contain 25.0–75.0 wt% silver chloride and 75.0–25.0 wt% silver bromide.

EFFECT: higher temperature resolution, reduced optical losses and reduced crosstalk.

1 cl, 3 ex