Variable beam spacing, timing, and power for vehicle sensors
First Claim
1. A system comprising:
- a plurality of light-emitter devices, wherein each light-emitter device is coupled to a respective die attach location and has a respective beam elevation angle, wherein the plurality of light-emitter devices is configured to emit light into an environment along the plurality of beam elevation angles toward respective target locations, and wherein a set of angle differences between beam elevation angles of adjacent light-emitter devices comprises at least two different angle difference values;
a plurality of pulser circuits, wherein the plurality of pulser circuits includes a respective pulser circuit for each light-emitter device in the plurality of light-emitter devices; and
a controller configured to control, for each given light-emitter device in the plurality of light-emitter devices, the respective pulser circuit for the given light-emitter device so as to emit light pulses according to a desired shot schedule, wherein the desired shot schedule is based on at least one of;
a beam elevation angle of light pulses emitted from the given light-emitter device or an anticipated target range of light pulses emitted from the given light-emitter device.
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Accused Products
Abstract
The present disclosure relates to systems and methods that facilitate light detection and ranging operations. An example transmit block includes at least one substrate with a plurality of angled facets. The plurality of angled facets provides a corresponding plurality of elevation angles. A set of angle differences between adjacent elevation angles includes at least two different angle difference values. A plurality of light-emitter devices is configured to emit light into an environment along the plurality of elevation angles toward respective target locations so as to provide a desired resolution and/or a respective elevation angle. The present disclosure also relates to adjusting shot power and a shot schedule based on the desired resolution and/or a respective elevation angle.
60 Citations
13 Claims
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1. A system comprising:
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a plurality of light-emitter devices, wherein each light-emitter device is coupled to a respective die attach location and has a respective beam elevation angle, wherein the plurality of light-emitter devices is configured to emit light into an environment along the plurality of beam elevation angles toward respective target locations, and wherein a set of angle differences between beam elevation angles of adjacent light-emitter devices comprises at least two different angle difference values; a plurality of pulser circuits, wherein the plurality of pulser circuits includes a respective pulser circuit for each light-emitter device in the plurality of light-emitter devices; and a controller configured to control, for each given light-emitter device in the plurality of light-emitter devices, the respective pulser circuit for the given light-emitter device so as to emit light pulses according to a desired shot schedule, wherein the desired shot schedule is based on at least one of;
a beam elevation angle of light pulses emitted from the given light-emitter device or an anticipated target range of light pulses emitted from the given light-emitter device. - View Dependent Claims (2, 3, 4, 5)
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6. A method comprising:
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causing at least one light-emitter device of a plurality of light-emitter devices to emit light pulses into an environment of a vehicle according to a desired shot schedule, wherein the desired shot schedule comprises at least one of; a) a firing order indicating an order in which the light-emitter devices of the plurality of light-emitter devices are to be fired; b) how long a given light-emitter device of the plurality of light-emitter devices is to be fired;
orc) how long to wait before firing a next light-emitter device in the firing order; wherein the desired shot schedule is based on a respective beam elevation angle of the respective light-emitter devices with respect to the environment of the vehicle, wherein respective light-emitter devices are coupled to respective die attach locations disposed along a front edge of at least one substrate, wherein a set of angle differences between beam elevation angles of adjacent light-emitter devices comprises a non-uniform beam elevation angle distribution with respect to the environment of the vehicle. - View Dependent Claims (7, 8, 9)
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10. A LIDAR device;
- comprising;
A light source mounted to a printed circuit board; a pulser circuit mounted to the printed circuit board, the pulser circuit electrically coupled to the light source and configured to accept a power signal, wherein the pulser circuit is configured to selectively electrically couple the light source to the power signal in response to a trigger signal, causing the light source to emit a light pulse; and a plurality of light sources, wherein respective light sources are coupled to respective die attach locations disposed along an edge of the printed circuit board, wherein a set of angle differences between beam elevation angles of adjacent light sources comprises a non-uniform beam elevation angle distribution with respect to the environment. - View Dependent Claims (11, 12, 13)
- comprising;
Specification