Patent ID: 8902418
Filing Date: 2014-12-02
Classification: G01N

Abstract:
1. A board inspection method comprising: providing an inspection area including a solder joint of a component mounted on a board with a first light having a first color, a second light having a second color different from the first color and a third light having a third color different from the first and second colors at a first inclination angle with respect to the board, a second inclination angle smaller than the first inclination angle with respect to the board and a third inclination angle smaller than the second inclination angle with respect to the board, respectively; acquiring a color image of the inspection area according to the first light, the second light and the third light provided to the inspection area; inspecting whether the solder joint is good or bad by using a color distribution in the color image; and verifying the inspection result by using pre-measured height information of the solder joint.