Patent ID: 9151596
Filing Date: 2015-10-06
Classification: G01B,H05K

Abstract:
1. A checking device of an SMT placement machine for checking positions of light emitting devices mounted on a circuit board, comprising: an imaging module; a shell for covering the light emitting devices and the circuit board to be tested, the shell having an opening over the light emitting devices and an atomized reflecting layer facing the light emitting devices, the opening being defined for exposing the light emitting devices to the imaging module whereby the imaging module can take images of the light emitting devices to decide the positions of the light emitting devices, the atomized reflecting layer being formed on an inner surface of the shell; and a light source covered by the shell and facing the atomized reflecting layer, light generated by the light source being reflected and diffused by the atomized reflecting layer toward the light emitting devices whereby the images of the light emitting devices are precisely caught by the imaging module.