Optical code reader having variable depth of field

Details Optical code reader having variable depth of field Optical code reader having variable depth of field

G - Physics

02

B

G02B 7/00 (2006.01) G02B 7/09 (2006.01) G02B 7/10 (2006.01) G06K 7/10 (2006.01) G06K 9/18 (2006.01)

Patent

CA 2508602

Several optical systems for imaging engines of imaging optical code readers are disclosed. Each optical system includes the abilities to change the depth of field of the imaging field and to adjust a focus quality of the imaging field. The disclosed structures for changing the depth of field of the disclosed optical systems allow for the automatic or manual selection of one of a plurality of depths of field.

L'invention concerne plusieurs systèmes optiques de moteurs d'imagerie de lecteurs de codes optiques d'imagerie. Chaque système optique est notamment capable de modifier la profondeur de champ du champ d'imagerie et de régler une qualité de la mise au point du champ d'imagerie. Les structures selon l'invention, qui permettent de modifier la profondeur de champ desdits systèmes optiques, autorisent la sélection automatique ou manuelle d'une des nombreuses profondeurs de champ.

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