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

Claim 7:
8. A beam projection method, comprising:
transmitting a beam, via a beam transmitter having one or more light sources, the beam transmitter having a beam centerline;
receiving, via a beam receiver, the beam from the beam transmitter, the beam receiver having an acceptance centerline;
forming, via a plurality of emitters and a plurality of detectors, 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 a divergence angle centered on the emitter centerline;
placing and orienting the plurality of emitters about the acceptance centerline of the beam receiver to align the emitter centerlines of the plurality of emitters to the beam;
detecting one or more of the plurality of emitters by one or more of the plurality of detectors using the divergence angles of each of the plurality of emitters and a tilt of the beam receiver relative to the beam centerline, and
in response to a detection of one or more of the plurality of emitters by one or more of the plurality of detectors, triggering the beam projection system to shut off the beam when the power beam receiver is tilted beyond a given angle relative to the beam.