Patent · US Active

Programmable pattern optical projector for depth detection

US10509128B1 · kind B1 · utility

3Cited by
5References
20Claims
0Family size

Assignee

Inventor

Key dates

Filing dateApr 12, 2019
Grant dateDec 17, 2019
Priority date—
Expiry dateApr 12, 2039

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH01S5/423
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

In an embodiment, an optical projector is provided with a laser array. Each laser is either collimated or focused to a fixed distance. At least one multiple beam grating (MBG) is placed in front of the laser array. The light pattern from the laser array is duplicated by the MBG, and cast on an object to be measured. The pattern on the object is changed by rotating the MBG. As a result, the number of patterns of structured dots that can be projected on the object is nearly unlimited. The optical projector can be used to provide depth perception to motion detection systems, to vehicle self-driving systems, and for many other uses.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.