Laser barcode scanner
First Claim
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1. A laser scanner, comprising:
- an indicia-capturing subsystem for acquiring information about indicia within the indicia-capturing subsystem'"'"'s field of view, the indicia-capturing subsystem including exactly one circuit board (i) a light source for projecting electromagnetic radiation toward indicia, (ii) a light-deflecting assembly, and (iii) a photodiode for collecting electromagnetic radiation reflected from the indicia, wherein the light source and the photodiode are positioned on the circuit board such that the electromagnetic radiation projected from the light source to the indicia and the electromagnetic radiation reflected from the indicia to the photodiode are non-retroreflective; and
an indicia-decoding subsystem configured for decoding indicia information acquired by the indicia-capturing subsystem.
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Abstract
The present laser barcode scanner employs (i) a simplified scan mechanism made from a semi-flexible substrate that eliminates complicated optical assemblies, (ii) a layout with location features eliminating the need for special alignment, and (iii) a layout with all surface mounted devices on a single layer eliminating the need for extra soldering. Together these strategies, when used with a method of mitigating stray-light by separating light paths with a circuit board, combine to achieve a laser barcode scanner of unique simplicity and performance.
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Citations
19 Claims
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1. A laser scanner, comprising:
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an indicia-capturing subsystem for acquiring information about indicia within the indicia-capturing subsystem'"'"'s field of view, the indicia-capturing subsystem including exactly one circuit board (i) a light source for projecting electromagnetic radiation toward indicia, (ii) a light-deflecting assembly, and (iii) a photodiode for collecting electromagnetic radiation reflected from the indicia, wherein the light source and the photodiode are positioned on the circuit board such that the electromagnetic radiation projected from the light source to the indicia and the electromagnetic radiation reflected from the indicia to the photodiode are non-retroreflective; and an indicia-decoding subsystem configured for decoding indicia information acquired by the indicia-capturing subsystem. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A laser scanner, comprising:
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an indicia-capturing subsystem for acquiring information about indicia within the indicia-capturing subsystem'"'"'s field of view, the indicia-capturing subsystem including exactly one circuit board (i) a light source for projecting electromagnetic radiation toward indicia, (ii) a light-deflecting assembly, and (iii) a photodiode for collecting electromagnetic radiation reflected from the indicia, wherein the light source and the light-deflecting assembly are secured to an optic holder, the optic holder being secured to a first side of the circuit board, and wherein the photodiode is positioned on a second, opposite side of the circuit board to baffle stray electromagnetic radiation emitted from the light source; and an indicia-decoding subsystem configured for decoding indicia information acquired by the indicia-capturing subsystem. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification