Patent ID: 11947048
Assignee: WAYMO LLC
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. A method comprising:
emitting, from a first light emitter of a light detection and ranging (lidar) device, a first light signal;
emitting, from a second light emitter of the lidar device, a second light signal;
guiding, by a first light guide disposed on a transparent substrate and optically coupled to the first light emitter, the first light signal from a first input end to a first output end, wherein the first output end comprises a first angled portion configured to direct the first light signal through the transparent substrate toward an environment surrounding the lidar device;
guiding, by a second light guide disposed on the transparent substrate and optically coupled to the second light emitter, the second light signal from a second input end to a second output end, wherein the second output end comprises a second angled portion configured to direct the second light signal through the transparent substrate and toward the environment surrounding the lidar device;
maintaining, by a first wavelength-locking mechanism using a portion of the first light signal, a wavelength of the first light signal;
maintaining, by a second wavelength-locking mechanism using a portion of the second light signal, a wavelength of the second light signal, wherein the wavelength of the first light signal and the wavelength of the second light signal are different from one another;
receiving, by a first light detector, the first light signal upon the first light signal being reflected by a first object in the environment surrounding the lidar device; and
receiving, by a second light detector, the second light signal upon the second light signal being reflected by a second object in the environment surrounding the lidar device.