초록 ▼

An optical scanner such as a bar code scanner includes a segmented fold mirror, the individual sections of which have different profiles. By directing the scanning laser beam across the fold mirror, a plurality of scan lines are created, at different distances from the scanner. This provides increas

An optical scanner such as a bar code scanner includes a segmented fold mirror, the individual sections of which have different profiles. By directing the scanning laser beam across the fold mirror, a plurality of scan lines are created, at different distances from the scanner. This provides increased flexibility by extending the scanner's working range. In alternative embodiments, a collector mirror and/or a scanning mirror may be segmented. In addition, beam shaping may be provided by reflecting the beam from one or more aplanar surfaces.

대표청구항 ▼

[ What is claimed is:] [1.] An optical scanner for reading indicia having areas of different light reflectivity, comprising:light source for producing a light beam, the light source including a beam shaping optical element;a scanning optical element for receiving the light beam and producing a scann

[ What is claimed is:] [1.] An optical scanner for reading indicia having areas of different light reflectivity, comprising:light source for producing a light beam, the light source including a beam shaping optical element;a scanning optical element for receiving the light beam and producing a scanning outgoing light beam therefrom; anda multi-surface reflector having a first surface of a first profile and a second surface of a second profile,wherein the beam shaping optical element of the light source, the scanning optical element, and the first and second profiles of the multi-surface reflector together shape the light beam so that the scanner is adapted to read an indicia at a first distance when the beam is reflected from the first surface and at a second distance when the beam is reflected from the second surface;wherein the multi-surface reflector comprises a fold mirror, the fold mirror being arranged to receive the scanning outgoing light beam and to direct it towards an indicia to be read.