公开(公告)号：US11774342B2

公开(公告)日：2023-10-03

申请号：US16833199

申请日：2020-03-27

Applicant: Apple Inc.

Inventor： Mehmet Mutlu ,  Miaolei Yan ,  Michael K. Brown ,  Richard Yeh

IPC: G01N15/14 ,  G01N15/06 ,  G01S7/4912 ,  G01P5/26 ,  G01P5/00 ,  G01P5/20

CPC classification number: G01N15/1434 ,  G01N15/06 ,  G01P5/001 ,  G01P5/20 ,  G01P5/26 ,  G01S7/4916 ,  G01N2015/0693 ,  G01N2015/1454

Abstract: 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 elements. The set of one or more optical elements is positioned to receive an optical emission of the self-mixing interferometry sensor, split the optical emission into multiple beams, and direct each beam of the multiple beams in a different direction. The self-mixing interferometry sensor is configured to generate particle speed information for particles passing through respective measurement regions of the multiple beams.

公开(公告)号：US11680788B2

公开(公告)日：2023-06-20

申请号：US17393278

申请日：2021-08-03

Applicant: Apple Inc.

Inventor： Mehmet Mutlu ,  Miaolei Yan

IPC: G01B9/02 ,  G01N15/06 ,  G01N15/10 ,  G01S7/4912 ,  G01S17/58

CPC classification number: G01B9/02092 ,  G01B9/02045 ,  G01N15/06 ,  G01N15/10 ,  G01S7/4916 ,  G01S17/58 ,  G01N2015/0693 ,  G01N2015/1075

Abstract: A portable electronic device is operable in a particulate matter concentration mode where the portable electronic device uses a self-mixing interferometry sensor to emit a beam of coherent light from an optical resonant cavity, receive a reflection or backscatter of the beam into the optical resonant cavity, produce a self-mixing signal resulting from a reflection or backscatter of the beam of coherent light, and determine a particle velocity and/or particulate matter concentration using the self-mixing signal. The portable electronic device is also operable in an absolute distance mode where the portable electronic device determines whether or not an absolute distance determined using the self-mixing signal is outside or within a particulate sensing volume associated with the beam of coherent light. If not, the portable electronic device may determine a contamination and/or obstruction is present that may result in inaccurate particle velocity and/or particulate matter concentration determination.

公开(公告)号：US11141498B2

公开(公告)日：2021-10-12

申请号：US16258431

申请日：2019-01-25

Applicant: Apple Inc.

Inventor： Miaolei Yan ,  Michael K. Brown ,  Richard Yeh

IPC: A61L2/10 ,  G01N33/00 ,  A61L9/20

Abstract: A portable communication device includes an apparatus for environmental sensing. The apparatus includes a housing, one or more environmental sensors and an optical source. The housing includes one or more ports for allowing air flow between the surrounding environment and a cavity of the housing. The environmental sensors are coupled to the housing and can sense an environmental agent included in the air flow. The optical source can illuminate the cavity of the housing to decompose unwanted organic compounds inside the port.

公开(公告)号：US11280774B2

公开(公告)日：2022-03-22

申请号：US16115478

申请日：2018-08-28

Applicant: Apple Inc.

Inventor： Miaolei Yan ,  Roberto M. Ribeiro ,  Richard Yeh

IPC: G01N33/00 ,  G01N35/00 ,  G01N1/02

Abstract: A portable communication device includes one or more miniature sensors to sense one or more environmental gases. A processor is coupled to the miniature sensors and is configured to enhance location detection by determining a sensor signal transition. The sensor signal transition is caused by subsequent exposures of at least one of the miniature sensors to environmental gases of a first air composition and a second air composition. The first air composition and the second air composition are respectively associated with a first location and a second location.

公开(公告)号：US11112233B2

公开(公告)日：2021-09-07

申请号：US16569586

申请日：2019-09-12

Applicant: Apple Inc.

Inventor： Mehmet Mutlu ,  Michael K. Brown ,  Wesley S. Smith ,  Orit A. Shamir ,  Richard T. Chen ,  Mark T. Winkler ,  Miaolei Yan ,  Richard Yeh

IPC: H01S5/183 ,  G01B9/02

Abstract: Aspects of the subject technology relate to an apparatus for self-mixing particulate-matter sensing using a vertical-cavity surface-emitting laser (VCSEL) with extrinsic photodiodes. The apparatus includes a dual-emitting light source disposed on a first chip and to generate a first light beam and a second light beam. The first light beam illuminates a particulate matter (PM), and a light detector extrinsic to the first chip measures the second light beam and variations of the second light beam and generates a self-mixing signal. The variations of the second light beam are caused by a back-scattered light resulting from back-scattering of the first light beam from the PM. The light detector is coupled to the dual-emitting light source. The direction of the second light beam is opposite to the direction of the first light beam, and the second light beam is directed to a sensitive area of the light detector.

公开(公告)号：US20200318945A1

公开(公告)日：2020-10-08

申请号：US16833271

申请日：2020-03-27

Applicant: Apple Inc.

Inventor： Mehmet Mutlu ,  Miaolei Yan

IPC: G01B9/02 ,  G01N15/06 ,  G01N15/10

Abstract: A portable electronic device is operable in a particulate matter concentration mode where the portable electronic device uses a self-mixing interferometry sensor to emit a beam of coherent light from an optical resonant cavity, receive a reflection or backscatter of the beam into the optical resonant cavity, produce a self-mixing signal resulting from a reflection or backscatter of the beam of coherent light, and determine a particle velocity and/or particulate matter concentration using the self-mixing signal. The portable electronic device is also operable in an absolute distance mode where the portable electronic device determines whether or not an absolute distance determined using the self-mixing signal is outside or within a particulate sensing volume associated with the beam of coherent light. If not, the portable electronic device may determine a contamination and/or obstruction is present that may result in inaccurate particle velocity and/or particulate matter concentration determination.

公开(公告)号：US20240000341A1

公开(公告)日：2024-01-04

申请号：US18202140

申请日：2023-05-25

Applicant: Apple Inc.

Inventor： Miaolei Yan ,  Tong Chen ,  Nicholas C. Soldner

IPC: A61B5/087 ,  A61B5/00

CPC classification number: A61B5/0873 ,  A61B5/0082 ,  A61B5/6803

Abstract: A head mounted device may include one or more interferometric sensors positioned and oriented in a housing to sense particle movement caused by respiration of a user. Interferometric signals from the one or more interferometric sensors may be used to determine respiration information about the user.

公开(公告)号：US20210364273A1

公开(公告)日：2021-11-25

申请号：US17393278

申请日：2021-08-03

Applicant: Apple Inc.

Inventor： Mehmet Mutlu ,  Miaolei Yan

IPC: G01B9/02 ,  G01N15/06 ,  G01N15/10 ,  G01S7/4912 ,  G01S17/58

Abstract: A portable electronic device is operable in a particulate matter concentration mode where the portable electronic device uses a self-mixing interferometry sensor to emit a beam of coherent light from an optical resonant cavity, receive a reflection or backscatter of the beam into the optical resonant cavity, produce a self-mixing signal resulting from a reflection or backscatter of the beam of coherent light, and determine a particle velocity and/or particulate matter concentration using the self-mixing signal. The portable electronic device is also operable in an absolute distance mode where the portable electronic device determines whether or not an absolute distance determined using the self-mixing signal is outside or within a particulate sensing volume associated with the beam of coherent light. If not, the portable electronic device may determine a contamination and/or obstruction is present that may result in inaccurate particle velocity and/or particulate matter concentration determination.

公开(公告)号：US10928345B2

公开(公告)日：2021-02-23

申请号：US16276460

申请日：2019-02-14

Applicant: Apple Inc.

Inventor： Michael K. Brown ,  Miaolei Yan ,  Roberto M. Ribeiro

IPC: G01N27/00 ,  G01N27/12 ,  G01N33/00

Abstract: A portable communication device may include a gas sensor enclosed in an enclosure, a port to allow flow of air into and out of the enclosure, and a light source disposed on an internal surface of the enclosure. The light source is operable to facilitate generation of ozone gas within the enclosure. The enclosure may contain a heating element that allows baseline calibration of the gas sensor by thermally decomposing ozone gas molecules. The gas sensor includes a miniature gas sensor such as a metal-oxide (MOX) gas sensor.

公开(公告)号：US20190058934A1

公开(公告)日：2019-02-21

申请号：US16053628

申请日：2018-08-02

Applicant: Apple Inc.

Inventor： Miaolei Yan ,  David MacNeil ,  Michael K. Brown ,  Richard Yeh

IPC: H04R1/02 ,  H04R1/04

Abstract: A portable communication device includes a transducer enclosed in an enclosure. An opening allows flow of air between the transducer enclosed in the enclosure and a surrounding environment. The enclosure protects the transducer from misreading due to occlusion of environmental aggressors on the transducer. The enclosure is configured to repel the environmental aggressors away from a surface of the transducer and to keep a portion of the opening unclogged to maintain an air flow to the transducer.