| 摘要 |
<p>The device (1) has light source (1.1) for transmission of light (L) and optical unit (1.2) for deflection and reflection of light. The The optical unit is formed of a first reflector (1.2.1) comprising Fresnel lens (1.2.1.1) arranged so that light emitted from light source in horizontal direction (X) and vertical direction (Y) is parallelized. The empty containers (2) in predetermined location in area (B) between first reflector and second reflector (1.2.2) are positioned, and optical unit is arranged such that light is directed at two times in opposite directions (Z) through area (B). An independent claim is included for method for identifying empties.</p> |
