公开(公告)号：US20180296098A1

公开(公告)日：2018-10-18

申请号：US16016649

申请日：2018-06-24

Applicant: OMNI MEDSCI, INC.

Inventor： Mohammed N. ISLAM

IPC: A61B5/00 ,  G01J3/28 ,  A61B5/145 ,  A61B5/1455 ,  G01N21/39 ,  G06F19/00 ,  G01N21/88 ,  G16H40/67 ,  G01J3/02 ,  G01J3/10 ,  G01J3/14 ,  G01N33/02 ,  G01N21/359 ,  G01N21/3563 ,  G01N21/35 ,  G01N33/49 ,  G01N33/44 ,  G01N33/15 ,  G01J3/453 ,  G01J3/42 ,  G01J3/18 ,  G01J3/12 ,  G01M3/38 ,  G01N21/85 ,  G01N21/95 ,  H01S3/00 ,  H01S3/30 ,  H01S3/067

CPC classification number: A61B5/0088 ,  A61B5/0013 ,  A61B5/0022 ,  A61B5/0024 ,  A61B5/0075 ,  A61B5/0086 ,  A61B5/14532 ,  A61B5/14546 ,  A61B5/1455 ,  A61B5/4547 ,  A61B5/6801 ,  A61B5/7203 ,  A61B5/7257 ,  A61B5/7405 ,  A61B5/742 ,  A61B2562/0233 ,  A61B2562/0238 ,  A61B2562/146 ,  A61B2576/02 ,  A61C1/0046 ,  A61C19/04 ,  G01J3/0218 ,  G01J3/108 ,  G01J3/14 ,  G01J3/1838 ,  G01J3/28 ,  G01J3/2823 ,  G01J3/42 ,  G01J3/453 ,  G01J2003/104 ,  G01J2003/1208 ,  G01J2003/2826 ,  G01M3/38 ,  G01N21/35 ,  G01N21/3563 ,  G01N21/359 ,  G01N21/39 ,  G01N21/85 ,  G01N21/88 ,  G01N21/9508 ,  G01N33/02 ,  G01N33/025 ,  G01N33/15 ,  G01N33/442 ,  G01N33/49 ,  G01N2021/3595 ,  G01N2021/399 ,  G01N2201/061 ,  G01N2201/06113 ,  G01N2201/062 ,  G01N2201/08 ,  G01N2201/12 ,  G01N2201/129 ,  G06F19/00 ,  G16H40/67 ,  H01S3/0092 ,  H01S3/06758 ,  H01S3/302

Abstract: A wearable device includes a measurement device adapted to be placed on a wrist or ear having a light source with LEDs to measure physiological parameters. The measurement device generates an optical beam having a near infrared wavelength between 700-2500 nanometers by modulating the LEDs, and lenses to deliver the beam to tissue, which reflects the beam to a receiver having spectral filters in front of spatially separated detectors coupled to analog to digital converters that generate at least two receiver outputs. Signal-to-noise ratio of the beam reflected from the tissue is improved by comparing the receiver outputs, and by increasing light intensity from the LEDs. The receiver is synchronized to the modulation of the LEDs and uses a lock-in technique that detects the modulation frequency. The measurement device generates an output signal representing a non-invasive measurement on blood within the tissue.

公开(公告)号：US20180186075A1

公开(公告)日：2018-07-05

申请号：US15565332

申请日：2016-01-29

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Lluis Hierro Domenech ,  Sergi Culubret ,  Esteve Comas

IPC: B29C64/286 ,  G02B5/20 ,  B29C64/165 ,  B33Y30/00

CPC classification number: G02B26/004 ,  B29C64/165 ,  B29C64/286 ,  B29K2995/002 ,  B33Y30/00 ,  B33Y70/00 ,  G01J3/10 ,  G01J3/108 ,  G02B5/208 ,  G02B5/24

Abstract: In one example of the disclosure, a system for limitation of energy wavelengths applied during 3D printing includes an energy source to provide energy to a target zone during a 3D printing operation. The system includes a filter chamber through which the energy is to pass before arriving at the target zone. The system includes a filter chamber control component to selectively modify the contents of the filter chamber to limit the wavelengths of energy that can pass through the filter chamber based upon type of the target zone.

公开(公告)号：US20180180404A1

公开(公告)日：2018-06-28

申请号：US15388743

申请日：2016-12-22

Applicant: The Boeing Company ,  FemtoMetrix, Inc.

Inventor： Jeffrey H. Hunt ,  Jianing Shi ,  John Paul Changala

IPC: G01B11/24

CPC classification number: G01B11/24 ,  G01J3/10 ,  G01J3/108 ,  G01J3/44 ,  G01J2003/102 ,  G01N21/636 ,  G01N21/65 ,  G01N2021/638 ,  G01N2021/655 ,  G01N2201/103 ,  G01N2201/105

Abstract: Surface sensing systems and methods for imaging a scanned surface of a sample via sum-frequency vibrational spectroscopy are disclosed herein. The systems include a sample holder, a visible light source configured to direct a visible light beam incident upon a sampled location of the scanned surface and a tunable IR source configured to direct a tunable IR beam coincident with the visible light beam upon the sampled location. The systems also include a scanning structure configured to scan the visible light beam and the tunable IR beam across the scanned surface, and a light filter configured to receive an emitted beam from the scanned surface and to filter the emitted beam to generate a filtered light beam. The systems further include a light detection system configured to receive the filtered light beam, and an alignment structure. The methods include methods of operating the systems.

公开(公告)号：US10006855B2

公开(公告)日：2018-06-26

申请号：US15359296

申请日：2016-11-22

Applicant: California Institute of Technology

Inventor： Axel Scherer ,  Frank T. Hartley

IPC: G01N21/35 ,  G01N21/3577 ,  G01J3/42 ,  G01J3/02 ,  G01J3/18 ,  G01J3/36 ,  G01J3/12

CPC classification number: G01N21/35 ,  G01J3/0208 ,  G01J3/0256 ,  G01J3/108 ,  G01J3/18 ,  G01J3/36 ,  G01J3/42 ,  G01J2003/1213 ,  G01N21/3563 ,  G01N21/3577 ,  G01N2021/3148 ,  G01N2201/0245 ,  G01N2201/0638

Abstract: MIR spectroscopy systems comprising hierarchical spectral dispersion that enables fine spectral resolution and high sensitivity spectroscopy are disclosed. Hierarchical spectral dispersion is derived by employing at least two diffractive lens arrays, located on either side of a test sample, each receiving input radiation having an input spectral range and distributing the input radiation into a plurality of output signals, each having a fraction of the spectral range of the input radiation. As a result, the signal multiplication factor of the two arrays is multiplied in a manner that mitigates the propagation of wavelength harmonics through the system. In some embodiments, an emitter array comprising a plurality of spectrally selective emitters provides the input MIR radiation to a spectroscopy system. In some embodiments, spectrally selective detectors are used to detect narrow spectral components in the radiation after they have passed through the test sample.

公开(公告)号：US10001409B2

公开(公告)日：2018-06-19

申请号：US15720079

申请日：2017-09-29

Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY

Inventor： Martti Blomberg ,  Hannu Kattellus

IPC: G01N21/35 ,  G01J3/10

CPC classification number: G01J3/108 ,  G01J3/0256 ,  G01J3/0286 ,  G01J5/024 ,  G01J5/046 ,  G01J5/061 ,  G01J5/522 ,  G01J2005/063 ,  G01N21/35 ,  H01L51/529 ,  H05B3/20

Abstract: A layered infrared emitter structure includes only semi-transparent metal layers, preferably one semi-transparent metal layer, and one or more dielectric layers on both sides of the semi-transparent metal layer. Further, an electric heating wiring is arranged in or between any of the dielectric layers to heat the semi-transparent metal layer up to a required infrared emission temperature, preferably to a temperature within a range from 400° C. to 1000° C.

公开(公告)号：US09995625B2

公开(公告)日：2018-06-12

申请号：US15516671

申请日：2015-10-02

Applicant: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jongin Song ,  Hajun Song

IPC: G01J3/10 ,  G01N21/3581 ,  G01N21/39 ,  H01S3/00 ,  H01S3/23

CPC classification number: G01J3/108 ,  G01N21/3581 ,  G01N21/39 ,  G01N2201/06113 ,  G01N2201/067 ,  G02F1/3534 ,  G02F2203/13 ,  H01S3/0085 ,  H01S3/2308

Abstract: An embodiment of the present invention provides a continuous-wave terahertz generation and detection device using a photomixing technique, the device including: first and second light source units configured to output continuous-wave laser light sources, which have single wavelength and different frequencies, to generate optical signals; a first electro-optic phase modulator configured to shift a frequency of the optical signal generated by the first light source unit, and a second electro-optic phase modulator configured to shift a frequency of the optical signal generated by the second light source unit; a first optical amplifier configured to receive and amplify the optical signal whose frequency is shifted by the first electro-optic phase modulator and the optical signal generated by the second light source unit, and a second optical amplifier configured to receive and amplify the optical signal whose frequency is shifted by the second electro-optic phase modulator and the optical signal generated by the first light source unit; an opto-electronic converter configured to convert the optical signal amplified by the first optical amplifier into a terahertz wave; a photomixer configured to mix the optical signal amplified by the second optical amplifier and the terahertz wave generated by the opto-electronic converter and convert the mixed signal into an electrical signal; a photodetector configured to combine the optical signals transferred from the first and second optical amplifiers and convert the combined optical signal into an electrical signal; and a filter unit configured to filter the electrical signal passing through the photodetector, wherein the electrical signal obtained through the photodetector is compared with the electrical signal obtained by the photomixer, and phase noise having the same frequency is removed.

公开(公告)号：US09971071B2

公开(公告)日：2018-05-15

申请号：US15794207

申请日：2017-10-26

Applicant: The United States of America, as represented by the Secretary of the Navy

Inventor： Joshua D. Caldwell ,  Virginia D. Wheeler ,  Marc Currie ,  Igor Vurgaftman ,  Jon-paul Maria

IPC: H01L49/00 ,  G02B5/00 ,  H01L49/02

CPC classification number: G02B5/008 ,  G01J3/108 ,  H01L28/24 ,  H01L37/02 ,  H01L49/00

Abstract: IR emission devices comprising an array of polaritonic IR emitters arranged on a substrate, where the emitters are coupled to a heater configured to provide heat to one or more of the emitters. When the emitters are heated, they produce an infrared emission that can be polarized and whose spectral emission range, emission wavelength, and/or emission linewidth can be tuned by the polaritonic material used to form the elements of the array and/or by the size and/or shape of the emitters. The IR emission can be modulated by the induction of a strain into a ferroelectric, a change in the crystalline phase of a phase change material and/or by quickly applying and dissipating heat applied to the polaritonic nanostructure. The IR emission can be designed to be hidden in the thermal background so that it can be observed only under the appropriate filtering and/or demodulation conditions.

公开(公告)号：US09970819B2

公开(公告)日：2018-05-15

申请号：US15009755

申请日：2016-01-28

Applicant: Si-Ware Systems

Inventor： Diaa Khalil ,  Bassam A. Saadany ,  Yasser M. Sabry

IPC: G01J5/02 ,  G01J3/45 ,  G01J3/10 ,  G01J3/02 ,  G01J3/26 ,  G01J3/453

CPC classification number: G01J3/45 ,  G01J3/0256 ,  G01J3/108 ,  G01J3/26 ,  G01J3/453 ,  G01J3/4531 ,  G01J3/4532 ,  G01J3/4535

Abstract: A spectrometer with increased optical throughput and/or spectral resolution includes a plurality of interferometers coupled in parallel. An optical splitter divides a source light beam into a plurality of input beams and directs each of the input beams to a respective one of the plurality of interferometers. One or more detectors are optically coupled to receive a respective output from each of the plurality of interferometers and is configured to detect an interferogram produced as a result of the outputs.

公开(公告)号：US20180100765A1

公开(公告)日：2018-04-12

申请号：US15837363

申请日：2017-12-11

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  IMEC TAIWAN

Inventor： Seongho CHO ,  Chaokang Liao ,  Dongho Kim

IPC: G01J3/42 ,  G01J3/10 ,  G01J3/02 ,  A61B5/00 ,  A61B5/1455 ,  A61B5/145

CPC classification number: G01J3/42 ,  A61B5/0075 ,  A61B5/14532 ,  A61B5/1455 ,  A61B2560/045 ,  G01J3/0208 ,  G01J3/0243 ,  G01J3/0291 ,  G01J3/108

Abstract: A biometric sensor that measures biometric information and a biometric analysis system including the biometric sensor are provided. The biometric sensor may include: a light source configured to emit light toward a region of interest of an object under examination, the light being diffused at the region of interest; a collimator that includes a though-hole and is configured to collimate the diffused light received from the region of interest; and a spectrometer configure to analyze the diffused light transmitted by the collimator.

公开(公告)号：US20180080822A1

公开(公告)日：2018-03-22

申请号：US15559228

申请日：2016-03-18

Applicant: Daniel L. Lau ,  Gonzalo R. Arce

Inventor： Daniel L. Lau ,  Gonzalo R. Arce

IPC: G01J3/02 ,  G01J3/28 ,  G01J3/10

CPC classification number: G01J3/0229 ,  G01J3/10 ,  G01J3/108 ,  G01J3/2823 ,  G01J3/2889 ,  G01S7/4816 ,  G01S7/4863 ,  G01S17/36 ,  G01S17/89

Abstract: Spectral imaging sensors and methods are disclosed. One spectral imaging sensor includes a light source, an array of coded apertures, one or more optical elements, and a photodetector. The light source is configured to emit a plurality of pulses of light toward an object to be imaged. The array of coded apertures is positioned to spatially modulate light received from the object to be imaged. The optical elements are configured to redirect light from the array of coded apertures. The photodetector is positioned to receive light from the one or more optical elements. The photodetector comprise a plurality of light sensing elements. The plurality of light sensing elements are operable to sense the light from the one or more optical elements in a plurality of time periods. The plurality of time periods have a same frequency as the plurality of pulses of light.