Bar code reader, has light mechanism including light collecting bar provided in front of light source e.g. LED, at distance of less than three millimeters, lens arranged on one side of source, and light receiving device provided behind lens

摘要

The reader has a main body (10) with an accommodation space and an optical input/output at its front end. A light mechanism (20) is provided in the space of the body and includes a light source e.g. LED, a light collecting bar (22), a lens (23), a light receiving device (24) and a reflector (25). The bar is provided in front of the source at a distance of less than 3.0 millimeters, and the lens is arranged on one side of the source. The light receiving device is provided behind the lens, and the reflector is arranged in front of the bar and the lens at a specific distance.