Patent ID: 11935274
Assignee: WORLDCOIN FOUNDATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 11:
12. An iris scanning device, comprising:
front end optics configured to receive a first optical signal from a first eye of a person and a second optical signal from a second eye of the person;
a polarization beam splitter optically coupled to the front end optics;
a polarization selector optically coupled to the polarization beam splitter;
a lens optically coupled to the polarization selector; and
a camera sensor optically coupled to the lens;
wherein the polarization beam splitter optically propagates a first portion of the first optical signal having a first polarization to the polarization selector and a second portion of the second optical signal having a second polarization to the polarization selector, wherein the polarization beam splitter inhibits optical propagation of a second portion of the first optical signal having the second polarization to the polarization selector and a first portion of the second optical signal having the first polarization to the polarization selector, and wherein the first polarization and the second polarization are orthogonal to each other;
wherein the polarization selector selectively allows a passed optical signal to be optically propagated to the lens during a time period and inhibits a blocked optical signal from being optically propagated to the lens during the time period, the passed optical signal being one of the first portion of the first optical signal having the first polarization or the second portion of the second optical signal having the second polarization, and the blocked optical signal being a differing one of the first portion of the first optical signal having the first polarization or the second portion of the second optical signal having the second polarization; and
wherein the lens causes the passed optical signal to be incident on the camera sensor during the time period.