Bar code scanning apparatus
AssigneeSumitomo Electric Industries, Ltd.
InventorsAtsushi Nakazawa, Mitsuru Nishikawa
Life of this patent
Estimating the term…
Abstract
A bar code scanning apparatus in which the visual field of a lens system is extended as outwardly exceeding the width of an opening of a case body in which the apparatus is housed, such that a bar code wider than the width of the opening can be scanned. A bar code wider than the width of the opening can be scanned with the opening coming in contact with the bar code. Thus, a wide bar code can be scanned without the bar code scanning apparatus increased in width and length.
Claims14
A bar code scanning apparatus for forming an image of a bar code disposed on a read surface, comprising:
- a case body having an opening;
- an image sensor housed in the case body;
- a lens system housed in the case body, the lens system having a focusing point at the opening;
- wherein a visual field of the lens system at the focusing point extends outwardly exceeding a width of the opening of the case body, and
- wherein the case body has lateral sides having slits which communicate with the opening so as not to interrupt optical paths in the visual field of the lens system, thereby enabling the image to be formed on the image sensor when the apparatus is positioning so that the opening is in contact at the read surface.
A bar code scanning apparatus for forming an image of a bar code disposed on a read surface, comprising:
- a case body having an opening and a portion projecting from the opening from one side of the case body;
- a light source disposed at a side of the case body opposite to the one side;
- an image sensor housed in the case body;
- a lens system housed in the case body, the lens system having a focusing point at a tip portion of the projecting portion;
- wherein a visual field of the lens system at the focusing point extends outwardly exceeding a width of the opening of the case body, so that with the tip portion in contact with the read surface at a distance from the opening, an image of the bar code is formed at the image sensor.
A bar code scanning apparatus for forming an image of a bar code disposed on a read surface, comprising:
- a case body having an opening and being fan-shaped at the opening so as to spread the opening;
- an image sensor housed in the case body;
- a lens system housed in the case body, the lens system having a focusing point at a center portion of the opening;
- wherein a visual field of the lens system at the focusing point extends outwardly exceeding a width of the opening, and
- wherein the case body does not interrupt optical paths in the visual field of the lens system, thereby enabling the image to be formed on the image sensor when the apparatus is positioned so that the center portion of the opening is at the read surface.
Dependencies are inferred from the claim text.