Patent ID: 7965884
Filing Date: 2011-06-21
Classification: G01R,G06T

Abstract:
1. A system for testing light-emitting diodes (LEDs) on a motherboard, comprising: an insulating plate positioned on the motherboard and configured with optical fibers for inducing beams sourced from the LEDs; a panel receiving the beams transmitted from the LEDs, the panel being connected to the insulating plate with the optical fibers, the panel comprising a corresponding number of transparent bulbs configured for outputting the beams sourced from the LEDs; a camera module fixed on the panel and configured for taking a first bulb image of the transparent bulbs when the LEDs are powered on and taking a second bulb image of the transparent bulbs when the LEDs are powered off; and a computer connected to the motherboard and the camera module, the computer configured for dividing the first bulb image and the second bulb image created by the camera module into several small pictures, calculating an average pixel value of each of the small pictures, calculating a first difference of each of the small pictures between the corresponding average pixel value and a first predetermined value, calculating a second difference of each of the small pictures between the corresponding average pixel value and a second predetermined value, and obtaining test results by comparing the first difference of each of the small pictures with the second difference of the corresponding small picture and reporting the test results.