초록 ▼

An optical assembly for use with optoelectronic readers. An imaging optical assembly having an imaging optical axis forms an image of a two-dimensional region on an optoelectronic imaging device. An aiming pattern generator including at least a point-like aiming light source and an interferometric p

An optical assembly for use with optoelectronic readers. An imaging optical assembly having an imaging optical axis forms an image of a two-dimensional region on an optoelectronic imaging device. An aiming pattern generator including at least a point-like aiming light source and an interferometric pattern generating optical element project onto the two-dimensional region a luminous aiming pattern that approximately coincides with the field of view of the imaging device. The aiming optical axis of the aiming pattern remains approximately coincident with the field of view of the imaging device over the range of reader-to-target distances over which the reader is used.

대표청구항 ▼

[ We claim:] [1.] An optical assembly for use with optoelectronic readers including, in combination:a) an imaging device for generating an electrical signal that varies in accordance with light received from a two-dimensional region;b) an imaging optics assembly for forming an image of said two-dime

[ We claim:] [1.] An optical assembly for use with optoelectronic readers including, in combination:a) an imaging device for generating an electrical signal that varies in accordance with light received from a two-dimensional region;b) an imaging optics assembly for forming an image of said two-dimensional region on said imaging device, said imaging optics assembly having an imaging optical axis and serving to define the field of view of said imaging device;c) an aiming pattern generator, including at least an aiming light source and an interferometric pattern generating optic element, for generating and projecting toward said two-dimensional region an aiming pattern that approximately coincides with the field of view of said imaging device, said aiming pattern having an aiming optical axis; andd) means for mounting said imaging optics assembly and said aiming pattern generator in proximity to one another with said imaging optical axis disposed approximately parallel to said aiming optical axis.