Optical reading device
AssigneeEschenbach Optik GmbH
InventorKurt Winkler
Life of this patent
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Abstract
An optical reading device is provided with a rod-shaped lens body having a first and a second pair of side surfaces extending in the longitudinal direction of the rod and, in pairs, disposed opposite of one another. At least one side surface of the first pair of side surfaces is configured as curved surface which is curved convexly in the directions of both the length and the width of the rod. At least one side surface of the second pair of side surfaces has an additional curved surface. In this manner, a magnifying lens with two different magnification options is created.
Claims13
An optical reading device having a rod-shaped lens body, the lens body having a length extending in a longitudinal direction, and a width extending in a direction transverse to the longitudinal direction, the lens body comprising:
- a first pair of side surfaces extending in the longitudinal direction of the lens body and being disposed opposite one another, at least one of the side surfaces being curved convexly in directions of both the length and width of the lens body;
- and
- a second pair of side surfaces connected to said first pair of side surfaces, extending in the longitudinal direction of the lens body, and being disposed opposite one another, at least one of the side surfaces of the second pair of side surfaces having a curved portion.
Dependencies are inferred from the claim text.