METHOD AND APPARATUS FOR SIMULATING BACKLIGHT WITHOUT BACKGROUND RADIATION SPECTRUM DISTORTION Russian patent published in 2012 - IPC G01D3/28 G01J1/04 

FIELD: physics, optics.

SUBSTANCE: invention relates to optics and specifically to devices for creating backlight without distortion of the background radiation spectrum, mainly for checking photosensitivity of the surface of a photodetector. Disclosed is a method and apparatus for simulating backlight without background radiation spectrum distortion, involving obtaining light flux from a backlight source, illuminating a set of pinholes with said light flux, said pinholes lying in a plane away from the backlight source such that light flux passing through each pinhole falls on the inner side surface of the cylindrical tube of the circular section of white light, whose axis passes through the backlight source, after reflection from which it is collected in the output face of the cylindrical tube, where the photosensitive surface of the photodetector is placed, lighting parameters of which are measured in the non-distorted spectrum of the lamp of the backlight source.

EFFECT: high accuracy of determining integral light sensitivity and non-uniformity of light sensitivity of a specific photodetector on a specific radiation source.

2 cl, 7 dwg