Patent ID: 6786413
Filing Date: 2004-09-07
Classification: G02B,G06K

Abstract:
In a reader for electro-optically reading indicia by reflecting a light beam off a plurality of generally planar light reflecting surfaces rotatable about an axis to sweep the light beam at a visibility across the indicia during a multiple scan line mode of operation, an arrangement for producing an aiming spot of enhanced visibility brighter than said visibility during a single scan line mode of operation, the arrangement comprising:a) an actuatable light source for producing the light beam; b) means for directing the light beam along a path to the generally planar reflecting surfaces and to the indicia to be read; c) a curved light reflecting surface mounted for joint rotation with and between two of the generally planar reflecting surfaces, and being movable across the path; d) a controller for actuating the light source during the single line mode to produce the light beam during movement of the curved reflecting surface across the path; and e) the curved reflecting surface having a center of curvature on the axis for reflecting, and not sweeping across the indicia, the light beam incident on the curved reflecting surface at an angle of reflection which is substantially constant during movement of the curved reflecting surface across the path, thereby producing the aiming spot of enhanced visibility.