Patent ID: 11867868
Assignee: LASERMOTIVE, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A beam projection system, comprising:
a beam transmitter having one or more light sources to transmit a beam, the beam transmitter having a beam centerline;
a beam receiver arranged to receive the beam from the beam transmitter, the beam receiver having an acceptance centerline; and
a plurality of emitters and a plurality of detectors that form a light curtain patterned about the beam, the plurality of emitters surrounding the beam;
wherein the plurality of emitters each have an emitter centerline and each have an emitter divergence angle centered on the emitter centerline, wherein placement and orientation of the plurality of emitters about the acceptance centerline of the beam receiver are configured to align the emitter centerlines of the plurality of emitters to the beam,
wherein detection of one or more of the plurality of emitters by one or more of the plurality of detectors depends on the emitter divergence angles of each of the plurality of emitters and a tilt of the beam receiver relative to the beam centerline, and
wherein a detection of one or more of the plurality of emitters by one or more of the plurality of detectors triggers the beam projection system to shut off the beam when the power beam receiver is tilted beyond a given angle relative to the beam.