US Patent 7150556 Light source structure

A light source structure includes a guidelight plate, a visible-light member disposed on at a first side of the guidelight plate, and an infrared-radiation member disposed on a second side of the guidelight plate. Whereby the visible-light member and the infrared-radiation member reveal a surface of a predetermined object, and provide revealed images that is capable of combining as a complete image. According to particular locations of the visible-light member and the lighting components, the light source structure is thin and cheap, with an additional benefit with high uniformity thereof.