| 摘要 |
The present invention relates to a lens eccentricity inspection method of an LED module using a concentric circle method and is to determine whether it is non-defective or defective depending on the measured result of eccentricity extent by comparing a central point of an LED chip and a position of a central point of a lens module, from an image obtained by irradiating white light and blue light on the LED module so as to inspect eccentricity and by shooting the reflected light using a UV camera. [Reference numerals] (AA) Start; (BB) Irradiate an LED module with white light and blue light; (CC) Film LED module images; (DD) Calculate an outer circle and a central point of the LED chip/lens modules; (EE) Calculate the distance between the central points of the LED chip and the lens module; (FF) Determine whether it is non-defective or defective by comparing the distance between the central points with a reference value; (GG) End |
