US 12,013,512 B2
Light barrier system, comprising at least two reflection light barrier devices
Bernhard Gütl, Hart bei Graz (AT); Marc Pendl, Hart bei Graz (AT); and Franz Mathi, Hart bei Graz (AT)
Assigned to KNAPP AG, Hart bei Graz (AT)
Appl. No. 17/760,156
Filed by KNAPP AG, Hart bei Graz (AT)
PCT Filed Jan. 20, 2021, PCT No. PCT/AT2021/060018
§ 371(c)(1), (2) Date Aug. 4, 2022,
PCT Pub. No. WO2021/159156, PCT Pub. Date Aug. 19, 2021.
Claims priority of application No. 50108/2020 (AT), filed on Feb. 12, 2020.
Prior Publication US 2023/0081936 A1, Mar. 16, 2023
Int. Cl. G01V 8/22 (2006.01); B65G 69/20 (2006.01)
CPC G01V 8/22 (2013.01) [B65G 69/20 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A conveyor system comprising:
a conveyor section having at least a first conveyor path, a second conveyor path, and a light barrier system, the light barrier system comprising at least two reflection light barrier devices, which are each configured to emit a light beam and to detect a reflected light beam,
wherein
the light barrier system comprises a reflection body, which is configured to reflect back in parallel light beams emitted from at least two different directions, which are spaced apart at an angle of at least 20°, wherein the at least two reflection light barrier devices are arranged in such a way that they emit light beams from different directions onto the same reflection body in order to monitor at least two spatially different areas, and
wherein the reflection light barrier devices and the reflection body are arranged with respect to the conveyor section in such a way that a first area over the first conveyor path and a second area over the second conveyor path are being monitored.