Patent ID: 9562760
Date: 2017-02-07
CPC Classifications: G01B,G01S,G06T

Claim:
1. A device for projecting patterned radiation, comprising: a pattern-generating element configured to produce a radiation pattern, wherein the radiation pattern includes: a normalized spatial cross correlation between the master spatial symbol and the plurality of spatial symbols arranged in the spatial arrangement, having a domain of relative offsets between the master spatial symbol and the spatial arrangement of spatial symbols, and producing a normalized spatial cross correlation value for each point in the domain, produces values that form peaks exceeding a first predetermined threshold at regions in the domain representing zero relative offset between the master spatial symbol and each of the spatial symbols in the spatial arrangement; and the values of the normalized spatial cross correlation between the master spatial symbol and the plurality of spatial symbols arranged in the spatial arrangement are each side lobe, from a plurality of side lobes, of the normalized spatial cross correlation of the master spatial symbol and each respective spatial symbol is less than a second predetermined threshold at all regions of the domain other than the peaks.