Patent ID: 11906629
Assignee: MICROVISION, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method for optical distance measurement, comprising:
for a first phase of a frame of the optical distance measurement,
emitting a first plurality of measuring pulses from at least one transmitting unit, where the at least one transmitting unit comprises a plurality of transmitting elements each configured to emit measuring pulses to a measuring region;
receiving first reflected measuring pulses using at least one receiving unit, wherein the at least one receiving unit comprises a plurality of receiving elements configured to receive reflections of the measuring pulses from the measuring region;
determining 2D information for at least a portion of the measuring region based on the received first reflected measuring pulses received in the first phase; and
determining at least one region of interest from the 2D information, wherein the at least one region of interest is a subregion of the measuring region; and

for a second phase of the frame of the optical distance measurement,
assigning receiving elements in the plurality of receiving elements to evaluating units in a plurality of evaluating units based at least in part on the determined at least one region of interest such that at least some of the receiving elements corresponding to outside the at least one region of interest are assigned to common evaluating units in the plurality of evaluating units;
emitting a second plurality of measuring pulses from the transmitting unit;
receiving second reflected measuring pulses at the at least one receiving unit; and
evaluating received second reflected measuring pulses received by the receiving elements in the second phase to determine 3D information for at least a portion of the measuring region, where the received second reflected measuring pulses are each evaluated by an evaluating unit assigned to a receiving element that received the second reflected measuring pulse.