Optical indicia reading apparatus with multiple image sensors

摘要

Optical indicia reading apparatus can comprise a microprocessor, a memory, and a plurality of wafer level camera (WLC) modules. Each WLC module can comprise an image sensor and a focusing lens, and optionally, an optical band-pass filter (BPF) configured to pass light waves within a pre-defined wavelength range. Each WLC module can be configured to output a signal representative of the light incident on the image sensor. The optical axis of a first WLC module can be spatially disposed relatively to an optical axis of a second WLC module so that the fields of view (FOVs) of the WLC modules at least partially overlap. The depth of field (DOF) of a first WLC module can at least partially overlap with the DOF of a second WLC module. The optical indicia reading apparatus can be configured to generate an image frame by processing two or more signals of the plurality of signals outputted by the WLC modules. The optical indicia reading apparatus can be further configured to output an image frame comprising an image of decodable indicia and/or decoded message corresponding to the decodable indicia.

主权项

1. An optical indicia reading apparatus comprising:
a microprocessor; a memory; a plurality of wafer level camera (WLC) modules, each WLC module of said plurality of WLC modules comprising an image sensor and a focusing lens; wherein each WLC module of said plurality of WLC modules is configured to output a signal representative of light incident on said image sensor; wherein an optical axis of a first WLC module of said plurality of WLC modules is spatially disposed relatively to an optical axis of a second WLC module of said plurality of WLC modules so that a field of view (FOV) of said first WLC module partially overlaps with a FOV of said second WLC module by less than 50% of their respective FOVs; wherein said optical indicia reading apparatus is configured to generate a single image frame comprising an image of decodable indicia by overlapping and processing two or more signals of a plurality of signals outputted by said plurality of WLC modules to yield the single image frame; wherein said optical indicia reading apparatus is further configured to store said single image frame in said memory; and wherein said optical indicia reading apparatus is further configured to output at least one of: said single image frame, decoded message corresponding to said decodable indicia.