TESTING METHOD OF LIGHT-EMITTING DIODES WITH INACCESSIBLE EMISSION INPUT/OUTPUT EDGE Russian patent published in 2013 - IPC G01M11/02 G01N21/88 G02B6/02 

FIELD: measurement equipment.

SUBSTANCE: testing method of light-emitting diodes with an inaccessible emission input/output edge consists in introduction of sounding emission to an accessible edge at least of one LED and recording of reflected emission by means of a photoreceiver through the same edge of LED. First, a reflecting colour coat is applied to inaccessible LED edge, or it is installed tightly or with a gap to the reflecting colour surface; LED sounding is performed using white light; recording of reflected emission is performed with the photoreceiver with colour CCD-matrix, and then, integrity or defectiveness of LED is determined visually as per the colour of the image of accessible LED edge or as per the colour grade parameter of that image, which is determined by means of a PC.

EFFECT: providing the possibility of enlarging the application field of LED testing method with one accessible emission input/output edge to LEDs of small length; increasing the capacity of the testing process and its technical simplification.

2 cl, 4 dwg