Patent ID: 8339596

Claim:
An apparatus for contactless detection of characteristics of continuously conveyed, translucent products, comprising: first and second transmitting units each having an independent light source to generate high-intensity light radiation to illuminate the product, a light-converting element to form a planar light field from the light radiation, and a focusing element to form a line of light from the planar light field, wherein the line of light extends transversely to a direction of conveying of the products and parallel to the line of light generated by the other transmitting unit, wherein the line of light and a center axis of the focussing element define a first plane perpendicular to the direction of conveying; a receiving unit having a detection device to pick up the light radiation transflected by the product in an inspection region, wherein the line of light formed by each transmitting unit runs parallel to the inspection region, and wherein the detection device and the inspection region define a second plane parallel to the first plane; and shading elements arranged respectively between the transmitting units and the receiving unit, wherein the first and second transmitting units are shielded from the receiving unit by the respective shading elements, wherein the first transmitting unit is arranged in front of the receiving unit in the direction of conveying of the products and the second transmitting unit is arranged behind the receiving unit in the direction of conveying.