Patent · US Active

Compact metalens depth sensors

US11578968B1 · kind B1 · utility

4Cited by

1References

18Claims

0Family size

Assignee

President and Fellows of Harvard College · US

Inventors

Federico Capasso · Westfield, US
Todd Zickler · Cambridge, US
Qi Guo · Shanghai, CN
Zhujun Shi · Redmond, US
Yao-Wei HUANG · Cambridge, US
Emma Alexander · Cambridge, US

Key dates

Filing date	Oct 30, 2020
Grant date	Feb 14, 2023
Priority date	—
Expiry date	Oct 30, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/10148
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Disclosed is a depth sensor for determining depth. The depth sensor can include a photosensor, a metalens configured to manipulate light to simultaneously produce at least two images having different focal distances on a surface of the photosensor, and processing circuitry configured to receive, from the photosensor, a measurement of the at least two images having different focal distances. The depth sensor can determine, according to the measurement, a depth associated with at least one feature in the at least two images.

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