DECODABLE INDICIA READING TERMINAL WITH OPTICAL FILTER

摘要

A decodable indicia reading terminal can comprise a housing including a housing window, a multiple pixel image sensor disposed within the housing, an imaging lens configured to focus an image of decodable indicia on the image sensor, an optical bandpass filter disposed in an optical path of light incident on the image sensor, an analog-to-digital (A/D) converter configured to convert an analog signal read out of the image sensor into a digital signal representative of the analog signal, and processor configured to output a decoded message data corresponding to the decodable indicia by processing the digital signal.

主权项

1. An apparatus comprising:
an image sensor configured to output a signal representative of incident on the image sensor via an optical path; an optical bandpass filter disposed in the image sensor's optical path so that light incident on the image sensor passes through the optical bandpass filter and is subject to bandpass filtering by the optical bandpass filter in common wavelength ranges, the optical bandpass filter configured for passing of two or more selected wavelength ranges and for attenuating light having a wavelength outside the two or more selected wavelength ranges.