FRACTAL FLICKER GENERATOR FOR BIOMEDICAL INVESTIGATIONS Russian patent published in 2015 - IPC H03B29/00 A61N1/00 

FIELD: medicine.

SUBSTANCE: generator comprises an external power supply with a connected microcontroller to two legs of which two n-channel field transistors are connected through L-shaped limiting ground resistors. Two or three light diodes and limiting resistors are connected to the above. Transistor drain circuits are grounded, whereas the generator is directly connected to a personal computer. Through it, pulse-width modulation legs of the microcontroller being integrated into the generator are programmed to vary the voltage by switching in and out the diodes at a required average brightness from 0.1 to 100 cd/m² for producing a fractal "sweep" pattern or a dichotomous pattern of doubled flicker packs. A flash length makes from 0.1 to 1 ms; a flash interval makes 0.1-1 ms; a flash number in one enclosure is from 3 to 7, and an enclosure number is from 2 to 6.

EFFECT: enables studying of the exposure on the living body parameters, including its visual functions, of a non-uniform light medium characterised by scaling time invariance.

1 tbl, 5 dwg