Optical information reader and illuminating method
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United States of America Patent
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Jun 28, 2016
Grant Date -
Apr 9, 2015
app pub date -
Oct 9, 2014
filing date -
Oct 9, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A barcode reader, as an optical information reader which reads information indicated with a symbol having a light reflectance different from an ambient light reflectance, is provided with a linear sensor as a light receiving sensor, an image pickup lens to image-form light on the linear sensor, an LED as a light emitting device, a projection lens to project light emitted from the LED, a parting portion to regulate a light projection range of the light emitted from the LED, having a first opening and a second opening to shield light out of a predetermined range, a central position of the predetermined range being shifted from position of an optical axis of the projection lens to a side of an optical axis of the image pickup lens.
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