| 摘要 |
PURPOSE: An optical device is provided to independently replace an image lens, thereby reducing the manufacturing time and expenses. CONSTITUTION: Light sources(110) are located on an upper part of a PCB(Printed Circuit Board) and radiates light. An illumination lens unit(120) is located on an upper part of the light sources and radiates the light to an object surface. An image lens(130) is located in the center of the illumination lens unit. The image lens collects the light, which is reflected from the object surface, in an image sensor(140). The image sensor is located in between the PCB and the image lens. The image sensor senses the collected light. The image lens is separated from the PCB. The illumination lens unit is perpendicular to the light sources. |
