公开(公告)号：US11237104B2

公开(公告)日：2022-02-01

申请号：US16344688

申请日：2017-10-25

Applicant: University of Virginia Patent Foundation

Inventor： Brooks Hart Pate

IPC: G01N21/3586 ,  G01N22/00 ,  H01J23/207 ,  G01J1/16 ,  G01J3/30 ,  H01J23/20 ,  G01J3/447

Abstract: A chiral molecule can be defined as a molecule that has a non-superimposable mirror image. These mirror images can be referred to as enantiomers. The enantiomers generally have the same set of bond lengths and bond angles in their three-dimensional geometry. Apparatus and techniques described herein can be used to perform analysis of chiral molecules using cavity-enhanced molecular rotational spectroscopy. A sample cell can define a resonant cavity, and a sample introduction port can provide pulse jet injection of an analyte molecule and a chiral tag to allow analysis of a complex comprising the analyte and chiral tag.

公开(公告)号：US11156501B1

公开(公告)日：2021-10-26

申请号：US16900966

申请日：2020-06-14

Applicant: Aizhong Zhang

Inventor： Aizhong Zhang

IPC: G01J3/28 ,  G01J3/10 ,  G01J3/447 ,  G01J3/12 ,  G02B27/28 ,  G01J3/36

Abstract: A method and device of plant spectropolarimetric imaging is disclosed. A device comprising a first illuminator to direct light toward at least a portion of a plant with epi-illumination, a second illuminator to direct light toward at least a portion of a plant with transillumination, wherein the first and second illuminators are broadband, covering visible and infrared spectra; an imaging system to form images; a detection system to record the images, wherein the detection system measures in a plurality of spectral channels; and a computer to display and analyze the recorded images from the detection system. The detection system or the imaging system, comprises a polarization analyzer system. A method comprising directing light from at least one broadband illuminator toward at least a portion of a plant; forming images with an imaging system; recording the images with a detection system; and analyzing the recorded images with a computer.

公开(公告)号：US11099297B1

公开(公告)日：2021-08-24

申请号：US16696994

申请日：2019-11-26

Applicant: Lockheed Martin Corporation ,  The Regents of the University of California

Inventor： Neal Eugene Hurlburt ,  Samuel Trent Thurman ,  Sung-Joo Ben Yoo ,  Chad Elliott Ogden

IPC: G01W1/10 ,  G01J3/26 ,  G01J3/447

Abstract: An imaging spectro-polarimetry system includes a polarizer, a tunable laser, a number of optical nodes and an image processing circuit. The polarizer produces polarized light using light received from an object. The tunable laser generates optical local oscillator (LO) signals. Each optical node receives the polarized light and an optical LO signal, performs a heterodyne mixing and generates a digital signal. The image processing circuit receives digital signals from the optical nodes and generates a magnetogram of the object. The polarizer, the tunable laser, the plurality of optical nodes and the image processing circuit are implemented on a photonic integrated circuit (PIC), and the polarized light includes right and left circularly polarized light.

公开(公告)号：US11060916B2

公开(公告)日：2021-07-13

申请号：US16975400

申请日：2018-05-28

Applicant: Southeast University

Inventor： Tong Zhang ,  Dan Su ,  Meng Xiong ,  Feng Shan ,  Xiaoyang Zhang

IPC: G01J3/447 ,  G01J3/28 ,  H01L27/146 ,  H01L31/0232 ,  H01L31/0352 ,  H01L31/101

Abstract: An adjustable hyperspectral detection chip enhanced by a multi-resonance plasmonic mechanism. The detection chip consists of an array of metal nanonail resonator detection units. Each detection unit (1) comprises: a bottom electrode (2), a semiconductor material layer (3), a spacer layer (4), a nanonail array (5), a control material layer (6), a top electrode (7), a peripheral control signal (8), and a driving circuit (9). The positional relationship from top to bottom is the top electrode (7), the control material layer (6), the nanonail array (5), the spacer layer (4), the semiconductor material layer (3), and the bottom electrode (2). The nanonail array (5) is loaded inside the control material layer (6), and the peripheral control signal (8) and the driving circuit (9) are connected to both sides of the control material layer (6).

公开(公告)号：US20210211619A1

公开(公告)日：2021-07-08

申请号：US17059353

申请日：2019-03-13

Applicant: SONY CORPORATION

Inventor： Hajime MIHARA ,  Shun KAIZU ,  Teppei KURITA ,  Yasutaka HIRASAWA

IPC: H04N9/31 ,  G01J4/04 ,  G01J3/447 ,  G02B27/28

Abstract: An information generation unit 30 acquires, from a polarization imaging unit 20, observation values in which polarization directions are at least three or more directions (m≥3). A noise amount calculation unit 35-1 calculates an amount of noise on the basis of an observation value in a first polarization direction. Similarly, noise amount calculation units 35-2 to 35-m calculate amounts of noise on the basis of observation values in second to m-th polarization directions. A polarization model estimation unit 36 estimates a polarization model by using the observation values for the respective polarization directions and the amounts of noise calculated by the noise amount calculation units 35-1 to 35-m. Thus, it is possible to calculate a polarization model that is robust against noise.

公开(公告)号：US11035730B2

公开(公告)日：2021-06-15

申请号：US16667183

申请日：2019-10-29

Applicant: CORNING INCORPORATED

Inventor： William John Furnas

IPC: G01N21/00 ,  G01J3/447 ,  G01N21/47

Abstract: Methods of characterizing an optical retardance or a stress-related property of a glass-bases sample include directing a light beam into the glass-based sample while varying the polarization of the light beam to generate scattered light for each polarization are provided. The scattered light for each polarization is captured with an image sensor, which has an exposure time and a frame rate. The scattered light has an intensity distribution at the image sensor. The sample is moved so that the image sensor averages two or more different intensity distributions per frame to form an averaged intensity distribution for each polarization. The averaged intensity distributions for multiple frames are then used to characterize the optical retardance. The optical retardance can turn be used to determine stress-related properties of the glass-based sample. Moving the substrate reduces measurement noise scattered light having no optical retardance information.

公开(公告)号：US11009398B2

公开(公告)日：2021-05-18

申请号：US16426085

申请日：2019-05-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Aleksey Dmitrievitch Lantsov ,  Alexander Viktorovitch Morozov ,  Aleksey Grigorievitch Anikanov ,  Maksim Vladimirovitch Ryabko ,  Anton Sergeevitch Medvedev

IPC: G01J3/28 ,  G02F1/1347 ,  G01J3/447 ,  G01J3/12 ,  G01J3/10

Abstract: A tunable optical filter, includes a light source configured to emit optical radiation to a sample; an input optical element configured to receive optical radiation reflected from the sample; a liquid crystal cell comprising electrodes, the liquid crystal cell contacting the input optical element; an output optical element, contacting the liquid crystal cell; and a control unit adapted to apply a preset voltage to the liquid crystal cell via the electrodes; wherein the input optical element and the output optical element have a same first refractive index, wherein, when voltage is not applied to the liquid crystal cell, the first refractive index is greater than a second refractive index of the liquid crystal cell for a wavelength range of incident optical radiation, and wherein the input optical element, the liquid crystal cell and the output optical element are tilted at an angle to the incident optical radiation.

公开(公告)号：US20210108964A1

公开(公告)日：2021-04-15

申请号：US16932834

申请日：2020-07-20

Applicant: Purdue Research Foundation

Inventor： Amr Mohammad E Shaltout ,  Alexander V. Kildishev ,  Vladimir M Shalaev ,  Jingjing Liu

IPC: G01J3/447 ,  G01J3/02 ,  G01N21/19 ,  G02B1/00 ,  G01J3/28

Abstract: A circular dichroism spectrometer which comprises a metasurface. The metasurface has a plurality of anisotropic antennas configured to simultaneously spatially separate LCP and RCP spectral components from an incoming light beam. An optical detector array is included which detects the LCP and RCP spectral components. A transparent medium is situated between the metasurface and the optical detector array.

公开(公告)号：US10935424B2

公开(公告)日：2021-03-02

申请号：US16563616

申请日：2019-09-06

Applicant: California Institute of Technology

Inventor： James K. Wallace

IPC: G01J3/447 ,  G01J3/02 ,  G01J3/50 ,  G01J3/28 ,  G02B23/02

Abstract: A spectral measurement device capable of achieving a high level of diffraction efficiency by reducing the polarization sensitivity of the device. Many such embodiments are capable of achieving high diffraction efficiency by fixing the polarization of the incoming light to a fixed polarized state internal to the device, thereby allowing for the full spectrum of light to be captured and measured by the device.

公开(公告)号：US20210033462A1

公开(公告)日：2021-02-04

申请号：US16975400

申请日：2018-05-28

Applicant: Southeast University

Inventor： Tong ZHANG ,  Dan SU ,  Meng XIONG ,  Feng SHAN ,  Xiaoyang ZHANG

IPC: G01J3/447 ,  G01J3/28 ,  H01L31/0352 ,  H01L31/0232 ,  H01L31/101 ,  H01L27/146

Abstract: An adjustable hyperspectral detection chip enhanced by a multi-resonance plasmonic mechanism. The detection chip consists of an array of metal nanonail resonator detection units. Each detection unit (1) comprises: a bottom electrode (2), a semiconductor material layer (3), a spacer layer (4), a nanonail array (5), a control material layer (6), a top electrode (7), a peripheral control signal (8), and a driving circuit (9). The positional relationship from top to bottom is the top electrode (7), the control material layer (6), the nanonail array (5), the spacer layer (4), the semiconductor material layer (3), and the bottom electrode (2). The nanonail array (5) is loaded inside the control material layer (6), and the peripheral control signal (8) and the driving circuit (9) are connected to both sides of the control material layer (6).