公开(公告)号：US20230333397A1

公开(公告)日：2023-10-19

申请号：US18336502

申请日：2023-06-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yeonsang PARK ,  Hyochul Kim ,  Jaesoong Lee ,  Younggeun Roh

IPC: G02B27/28 ,  G01J4/04 ,  G02B5/20 ,  G02B5/28

CPC classification number: G02B27/288 ,  G01J4/04 ,  G02B5/203 ,  G02B5/286 ,  G02B5/288

Abstract: Provided is a polarization spectral filter, including: a first reflector and a second reflector disposed to face each other in a first direction; and a grating layer disposed between the first reflector and the second reflector. The grating layer includes a plurality of first grating elements and a plurality of second grating elements, the plurality of first grating elements and the plurality of second grating elements being alternately arranged in a second direction perpendicular to the first direction. The plurality of first grating elements include a first dielectric material having a first refractive index. The plurality of second grating elements include a second dielectric material having a second refractive index different from the first refractive index.

公开(公告)号：US20230305190A1

公开(公告)日：2023-09-28

申请号：US18041528

申请日：2021-08-18

Applicant: NANYANG TECHNOLOGICAL UNIVERSITY

Inventor： Cesare SOCI ,  Giorgio ADAMO ,  Mustafa EGINLIGIL ,  Xinxing SUN ,  Harish N.S. KRISHNAMOORTHY ,  Nikolay I. ZHELUDEV

IPC: G02B1/08 ,  H10N50/80 ,  H10N50/20 ,  G01J4/04

CPC classification number: G02B1/08 ,  H10N50/80 ,  H10N50/20 ,  G01J4/04 ,  G02B1/002

Abstract: A layer including a topological insulator, the layer including: an arrangement of a plurality of patterns on a surface of the layer, each pattern of the plurality of patterns including at least a non-straight elongated portion. An electronic device including the layer including a topological insulator, and further including first and second electrodes on the layer. Further, the first and second electrodes may be configured to provide electrical connection to the layer. A method of controlling spin transport in the layer includes a topological insulator, the method including: applying circularly polarized light on the layer; and driving an electronic component with a photocurrent produced in the layer by the circularly polarized light.

公开(公告)号：US11530953B2

公开(公告)日：2022-12-20

申请号：US17157355

申请日：2021-01-25

Applicant: Arizona Board of Regents on Behalf of the University of Arizona

Inventor： Stanley Pau

IPC: G01J4/04

Abstract: Methods and devices for measuring full or partial Mueller matrix information in a single shot are described. One single shot polarimeter includes a polarization filter that is positioned to receive collimated light from a light source and to produce light having different polarization states. The polarization filter includes at least four sections, where each section receives a portion of the collimated light and produces light of a particular polarization state, which is spatially separated from light produced by other sections of the polarization filter. An imaging component images the sections of the polarization filter onto a plane of a sample object. One or more optical elements receive the light from the sample object and image a section of the sample object onto a detector. The disclosed devices and methods enable the measurement of the Mueller matrix of the sample with high signal-to-noise ratios.

公开(公告)号：US20220364924A1

公开(公告)日：2022-11-17

申请号：US17746335

申请日：2022-05-17

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jeahyuck LEE ,  Hyunguk YOO

IPC: G01J4/04 ,  A61B5/024

Abstract: An electronic device is provided. The electronic device includes a lighting-emitting diode (LED) module configured to emit light of a first polarization direction, a first photodiode configured to receive the light emitted from the LED module through a first polarizer having the first polarization direction, a second photodiode configured to receive the light emitted from the LED module through a second polarizer having a second polarization direction perpendicular to the first polarization direction, and a processor configured to determine wearing information of the electronic device based on luminous intensity of light sensed from each of the first photodiode and the second photodiode.

公开(公告)号：US20220244442A1

公开(公告)日：2022-08-04

申请号：US17500913

申请日：2021-10-13

Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE

Inventor： Noah A. RUBIN ,  Federico CAPASSO

IPC: G02B5/30 ,  G01J4/04

Abstract: The present disclosure provides an optical component, which may be a metasurface grating, including (a) a substrate; and (b) an array of subwavelength-spaced phase-shifting elements, which are tessellated on the substrate to produce, when illuminated with a polarized incident light, a diffracted light beam with a distinct polarization state for each of a finite number of diffraction orders, wherein the finite number is 2 or more.

公开(公告)号：US20220155218A1

公开(公告)日：2022-05-19

申请号：US17439480

申请日：2019-07-17

Applicant: JASCO CORPORATION

Inventor： Yuichi MIYOSHI ,  Yoshiro KONDO

IPC: G01N21/19 ,  G01J4/04

Abstract: A circular dichroism measurement device includes: a sample part having a sample; a PEM that modulates a polarization state of an incoming light to the sample part or an outgoing light from the sample part; a photo detector that detects a change in a light intensity of the outgoing light from the sample part; an amplifier that amplifies a detection signal from the photo detector; an A/D converter that converts the detection signal amplified by the amplifier to a digital signal; and a digital processing device that executes a signal processing to the digital signal from the A/D converter to acquire a measurement value of circular dichroism of the sample. The A/D converter is configured to convert the detection signal, that is amplified in a state of containing the AC component and the DC component of the light intensity that changes with the same frequency as the modulation frequency of PEM.

公开(公告)号：US11268900B2

公开(公告)日：2022-03-08

申请号：US16781474

申请日：2020-02-04

Applicant: NIKON CORPORATION

Inventor： Takanori Kojima ,  Satoru Odate ,  Toru Takagi

IPC: G01N21/21 ,  G01N21/31 ,  G01N21/25 ,  G01J3/51 ,  G01J3/28 ,  G01J3/02 ,  G01J4/04 ,  G01J4/00 ,  G01J3/00 ,  H01L27/146 ,  G06T15/00 ,  A61B1/06 ,  A61B1/00 ,  A61B1/04 ,  G06T7/521 ,  G01N21/47 ,  G01J1/42

Abstract: A polarization property image measurement device includes: a first radiation unit that radiates light beams in different polarization conditions onto a target object after subjecting the light beams to intensity modulation at frequencies different from one another; a light receiving unit including first photoelectric conversion units that photoelectrically convert the light beams having been radiated from the first radiation unit and scattered at the target object in correspondence to each of the different polarization conditions, and second photoelectric conversion units that photoelectrically convert visible light from the target object; and a processor that detects signals individually output from the first photoelectric conversion units at the different frequencies and differentiates each signal from other signals so as to determine an origin of the signal as one of the light beams; and creates an image of the target object based upon signals individually output from the second photoelectric conversion units.

公开(公告)号：US11268811B2

公开(公告)日：2022-03-08

申请号：US16659282

申请日：2019-10-21

Applicant: NuVision Photonics, Inc.

Inventor： Xiaotian Steve Yao

IPC: G01C19/72 ,  G01J4/04

Abstract: Techniques and devices for optical sensing of rotation based on measurements and sensing of optical polarization or changes in optical polarization due to rotation without using optical interferometry.

公开(公告)号：US20220003910A1

公开(公告)日：2022-01-06

申请号：US17481278

申请日：2021-09-21

Applicant: Facebook Technologies, LLC

Inventor： Kieran Tobias Levin ,  Evan Mark Richards

IPC: G02B5/30 ,  G01J4/04 ,  G02B27/28

Abstract: An alignment apparatus for a polarization device includes a polarizer subassembly for polarizing a light beam, a rotary support for rotatably supporting the polarization device in a path of the light beam downstream of the polarizer subassembly, an analyzer subassembly downstream of the rotary support for receiving the light beam propagated through the polarization device, and a photodetector array disposed downstream of the analyzer subassembly and extending along the width dimension of the light beam for detecting the light beam propagated through the analyzer subassembly. At least one of the polarizer or analyzer subassemblies includes a spatially variant polarization element having a polarization property varying along the width dimension of the light beam.

公开(公告)号：US11206388B2

公开(公告)日：2021-12-21

申请号：US15515260

申请日：2015-10-28

Applicant: SONY CORPORATION

Inventor： Yuhi Kondo ,  Yasutaka Hirasawa ,  Kengo Hayasaka

IPC: H04N13/271 ,  H04N13/214 ,  G01B11/24 ,  G01B11/00 ,  H04N5/225 ,  H04N13/218 ,  G06T7/55 ,  H04N5/247 ,  H04N13/229 ,  G01C3/08 ,  G01J4/04 ,  H04N13/00 ,  H04N13/243 ,  H04N13/232

Abstract: A depth map generation unit generates a depth map from images obtained by picking up a subject at a plurality of viewpoint positions by an image pickup unit. On the basis of the depth map generated by the depth map generation unit, an alignment unit aligns polarized images obtained by the image pickup unit picking up the subject at the plurality of viewpoint positions through polarizing filters in different polarization direction at the different viewpoint positions. A polarization characteristic acquisition unit acquires a polarization characteristic of the subject from a desired viewpoint position by using the polarized images aligned by the alignment unit to obtain the high-precision polarization characteristic with little degradation in temporal resolution and spatial resolution. It becomes possible to acquire the polarization characteristic of the subject at the desired viewpoint position.