Patent ID: 7387247

Claim:
An optical information reader comprising: a case; a light source installed in the case and configured to supply light; a lens installed in the case and configured to focus the supplied light through part of the case onto optical information attached to a target; and a particle blocking member installed in the case to be arranged between the part of the case and the light source, the particle blocking member allowing light reflected from the optical information to pass therethrough, the particle blocking member being integrally provided with a holder configured to support the light source, the particle blocking member blocking flow of particles into the light source side in the case, wherein the case is provided therein with a mounting member configured such that the particle blocking member is displaced in a mount direction to be mounted onto the mounting member, the holder comprises: a first supporting wall arranged substantially in parallel to the mount direction of the particle blocking member; and a second supporting wall arranged substantially orthogonal to the mount direction of the particle blocking member, and the light source is supported to be positioned by the first and second supporting walls such that the light source abuts on the first and second supporting walls at first and second points, respectively.