Patent ID: 6276606
Filing Date: 2001-08-21
Classification: G06K

Abstract:
A full range bar code scanner primarily comprising a scanner housing having a light source, a lens set and a CCD-sensing device mounted inside thereof, said light source emitting light to reflect upon a bar code in front thereof, created reflection rays being focused after passing through said lens set so that the image of said bar code is formed on said CCD-sensing device and converted into digital data for use after being read by said CCD-sensing device and decoded by an electrical circuit, characterized in that a spectroscope is mounted at the path of said reflection rays in front of said lens set, and that one side of said spectroscope opposite to said lens set is constructed as reflection face with reflection effect, and that at least one secondary reflector is installed near said spectroscope, and that said secondary reflector is able to receive said reflection rays of said bar code beyond the range of the original depth of focus; thereafter, said reflection rays reflect themselves upon said reflection face of said spectroscope so that said image will be formed on said CCD-sensing device after said reflection rays pass through said lens set.