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US 2003/0071121 A1Published application
Optical data collection device with a combined targeting and focusing apparatus
OwnerGregg R. Kricorissianinventor
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OwnerGregg R. Kricorissianinventor
Estimating the term…
An optical reader for collecting image data representative of light reflected from a target which may be a symbology and a method of collecting data are described. The optical reader comprises an imager having a photosensitive detector for producing image data signals from light reflected by the target and a system for focusing the reflected light onto the photosensitive detector from the target located within a depth of reading range of the imager, as well as a targeting generator for generating an illuminated pattern on the target such that the pattern appears substantially in focus on the target located over a range of distances from the generator within the depth of reading range of the imager. The photosensitive detector may include charge coupled devices or complementary metal oxide silicon devices. The targeting generator may comprise one or more generators mounted about the imager to project a predetermined pattern along an optical axis. Each generator may include a light source for producing a coherent beam, a diffractive surface for producing a pattern from the coherent beam and an element for focusing the pattern in the depth of reading range of the imager. The focusing element may be a fresnel lens and the diffractive surface may be a diffractive optical element or a diffractive optical element on the surface of the fresnel lens facing the light source. Various arrangements of targeting generators are possible.
An optical reader for collecting image data representative of light reflected from a target, said reader comprising:
A method of sensing and collecting optical image data of a target using a reader having imaging means with a predetermined depth of reading range comprising:
A method of sensing and collecting optical image data of a symbology using a reader having imaging means with a predetermined depth of reading range, targeting generator means for projecting one or more illuminated patterns on the target wherein the pattern is substantially in focus at a distance within the predetermined depth of reading range of the imaging means, image processing means for receiving the symbology optical image data and decoding information contained in the symbology, host connection means for receiving the decoded information for transfer to a host system, target illumination means, and a controller for controlling the imaging means, the target generator means, the image processing means and the illumination means, comprising the steps of:
A method of sensing and collecting optical image data of a target using a reader having imaging means with a predetermined depth of reading range, targeting generator means for projecting one or more illuminated patterns on the target wherein the pattern is substantially in focus at a distance within the predetermined depth of reading range of the imaging means, host connection means for receiving the image data for transfer to a host system, target illumination means, and a controller for controlling the imaging means, the target generator means and the illumination means, comprising the steps of:
An optical reader for collecting image data of a target, said reader comprising:
Dependencies are inferred from the claim text.