Vibration measurements by self-mixing interferometry: An overview of configurations and benchmark performances
S Donati - Vibration, 2023 - mdpi.com
Self-mixing interferometry (SMI) is suitable to sense and measure vibrations of amplitudes
ranging from picometers to millimeters at frequencies from sub-Hz to MHz's. As an optical …
ranging from picometers to millimeters at frequencies from sub-Hz to MHz's. As an optical …
Input devices that use self-mixing interferometry to determine movement within an enclosure
M Mutlu, Y Pan, SE Dey - US Patent 11,422,638, 2022 - Google Patents
An input device includes an enclosure defining a three-dimensional input space and one or
more self-mixing interferometry sensors coupled to the enclosure and configured to produce …
more self-mixing interferometry sensors coupled to the enclosure and configured to produce …
Wearable self-mixing interferometry device used to sense physiological conditions
A wearable electronic device including a housing that is worn by a user and a SMI sensor
contained within the housing. The SMI sensor may include an emitter that outputs coherent …
contained within the housing. The SMI sensor may include an emitter that outputs coherent …
Self-mixing interferometry device configured for non-reciprocal sensing
Methods and systems concerning non-reciprocal sensing paths for a self-mixing
interferometry operation are disclosed herein. Optical components may be used to direct …
interferometry operation are disclosed herein. Optical components may be used to direct …
Input device with self-mixing interferometry sensors
AF Cihan, AZ Harb, M Huang, SE Dey, Y Pan… - US Patent …, 2023 - Google Patents
2021-05-13 Assigned to APPLE INC. reassignment APPLE INC. ASSIGNMENT OF
ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PAN, Yuhao, DEY …
ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PAN, Yuhao, DEY …
Particulate matter sensors based on split beam self-mixing interferometry sensors
M Mutlu, YAN Miaolei, MK Brown, R Yeh - US Patent 11,774,342, 2023 - Google Patents
Various sensors, including particulate matter sensors, are described. One particulate matter
sensor includes a self-mixing interferometry sensor and a set of one or more optical …
sensor includes a self-mixing interferometry sensor and a set of one or more optical …
RF antenna scanning for human movement classification
J Jadidian, EPK Chung, JC Meador - US Patent 11,914,093, 2024 - Google Patents
A method for human movement classification includes a plurality of radio frequency (RF)
antennas to expose a body surface of a human user to an E-field, at least a part of the …
antennas to expose a body surface of a human user to an E-field, at least a part of the …
Wearable self-mixing interferometry device used to sense physiological conditions
A wearable electronic device including a housing that is worn by a user and a SMI sensor
contained within the housing. The SMI sensor may include an emitter that outputs coherent …
contained within the housing. The SMI sensor may include an emitter that outputs coherent …
Self-mixing interferometry-based input device
A wearable device includes a device housing configured to be worn on a first surface of a
user, a set of one or more SMI sensors, and a processor. The set of one or more SMI sensors …
user, a set of one or more SMI sensors, and a processor. The set of one or more SMI sensors …
Handling obstructions and transmission element contamination for self-mixing particulate matter sensors
M Mutlu, YAN Miaolei - US Patent 11,680,788, 2023 - Google Patents
G01P5/18—Measuring speed of fluids, eg of air stream; Measuring speed of bodies relative
to fluids, eg of ship, of aircraft by measuring the time taken to traverse a fixed …
to fluids, eg of ship, of aircraft by measuring the time taken to traverse a fixed …