Patent · US Active

Systems and methods for concentrating alkali metal within a vapor cell of a magnetometer away from a transit path of light

US11698419B2 · kind B2 · utility

1Cited by

84References

25Claims

0Family size

Assignee

HI LLC · US

Inventors

Stephen Garber · Santa Monica, US
Ethan Pratt · Santa Clara, US
Jeffery Kang Gormley · Calabasas, US
Scott Michael Homan · Culver City, US
Scott Jeremy Seidman · Glenview, US
Dakota Blue Decker · Culver City, US
Jamu Alford · Lake Arrowhead, US
Michael Henninger · Austin, US
Teague Lasser · Los Angeles, US
Micah Ledbetter · Sunnyvale, US
Jerry Leung · Santa Monica, US
Hooman Mohseni · Wilmette, US
Benjamin Siepser · Los Angeles, US

Key dates

Filing date	Apr 30, 2020
Grant date	Jul 11, 2023
Priority date	—
Expiry date	Nov 18, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH05K2201/10151
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An exemplary wearable sensor unit includes 1) a magnetometer comprising a vapor cell comprising an input window and containing an alkali metal, and a light source configured to output light that passes through the input window and into the vapor cell along a transit path, and 2) a temperature control circuit external to the vapor cell and configured to create a temperature gradient within the vapor cell, the temperature gradient configured to concentrate the alkali metal within the vapor cell away from the transit path of the light.

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