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公开(公告)号：US10983338B2
公开(公告)日：2021-04-20
申请号：US15858368
申请日：2017-12-29
Applicant: Palo Alto Research Center Incorporated
Inventor： Alex Hegyi
IPC: G02B27/00 , G02F1/1335 , G02F1/139 , G01J3/45 , G01J3/453 , G02B27/42 , G02F1/13357 , F21V8/00 , G01J3/447
Abstract: An optical device includes a liquid-crystal variable retarder. An exit-pupil expander is optically coupled to the liquid-crystal variable retarder, the exit-pupil expander includes: at least one optical input feature that receives reference light from a reference light source; and one or more optical coupling elements coupled to receive the reference light from the reference light source and expand the reference light to one or more spatially-separated regions of the liquid-crystal variable retarder.
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公开(公告)号：US20200378831A1
公开(公告)日：2020-12-03
申请号：US16998870
申请日：2020-08-20
Applicant: Palo Alto Research Center Incorporated
Inventor： Alex Hegyi , Joerg Martini
Abstract: A hyperspectral imaging system has a processor to receive hyperspectral imaging parameters and produce a series of images to be acquired at a series of retardances at a series of retardance times, a hyperspectral imaging component having an input polarizer to polarize an incoming beam of light, a liquid crystal variable retarder to receive the polarized beam of light and to produce wavelength-dependent polarized light, an output polarizer to receive the wavelength-dependent polarized light and to convert polarization state information into a form detectable as light intensity, a voltage source connected to the liquid crystal variable retarder, and a retardance controller. The retardance controller receives the series of retardances at a series of retardance times and produces a series of voltages at a series of voltage times to apply to the liquid crystal variable retarder. A focal plane array, synchronized with the retardance controller, receives the light in a form detectable as light intensity and converts the light to a series of images.
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公开(公告)号：US10801950B2
公开(公告)日：2020-10-13
申请号：US15751095
申请日：2016-08-29
Applicant: Apple Inc.
Inventor： Miikka M. Kangas , Mark Alan Arbore , David I. Simon , Michael J. Bishop , James W. Hillendahl , Robert Chen
IPC: G01N21/27 , G01N21/35 , G01N21/47 , G01J3/32 , G01J3/36 , G01J3/433 , G01J3/447 , G01J3/02 , G01J3/42 , G01N21/49 , G01N21/21
Abstract: This relates to systems and methods for measuring a concentration and type of substance in a sample at a sampling interface. The systems can include a light source, optics, one or more modulators, a reference, a detector, and a controller. The systems and methods disclosed can be capable of accounting for drift originating from the light source, one or more optics, and the detector by sharing one or more components between different measurement light paths. Additionally, the systems can be capable of differentiating between different types of drift and eliminating erroneous measurements due to stray light with the placement of one or more modulators between the light source and the sample or reference. Furthermore, the systems can be capable of detecting the substance along various locations and depths within the sample by mapping a detector pixel and a microoptics to the location and depth in the sample.
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公开(公告)号：US10760967B2
公开(公告)日：2020-09-01
申请号：US14883404
申请日：2015-10-14
Applicant: Palo Alto Research Center Incorporated
Inventor： Alex Hegyi , Joerg Martini
IPC: G01J3/28 , G02F1/1335 , G02F1/137 , G02F1/141 , G01J3/02 , H04N5/225 , G01J3/45 , G01J3/453 , G01J3/447
Abstract: A hyperspectral imaging system has a processor to receive hyperspectral imaging parameters and produce a series of images to be acquired at a series of retardances at a series of retardance times, a hyperspectral imaging component having an input polarizer to polarize an incoming beam of light, a liquid crystal variable retarder to receive the polarized beam of light and to produce wavelength-dependent polarized light, an output polarizer to receive the wavelength-dependent polarized light and to convert polarization state information into a form detectable as light intensity, a voltage source connected to the liquid crystal variable retarder, and a retardance controller. The retardance controller receives the series of retardances at a series of retardance times and produces a series of voltages at a series of voltage times to apply to the liquid crystal variable retarder. A focal plane array, synchronized with the retardance controller, receives the light in a form detectable as light intensity and converts the light to a series of images.
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公开(公告)号：US20200256725A1
公开(公告)日：2020-08-13
申请号：US16692776
申请日：2019-11-22
Inventor： Seunghoon Han , Amir Arbabi , Andrei Faraon , Ehsan Arbabi
Abstract: A spectrometer includes a substrate; a slit which is provided on the substrate and through which light is incident onto the substrate; a metasurface including nanostructures that is configured to reflect and focus the light incident thereon through the slit, at different angles based on respective wavelengths; and a sensor which is provided on one side of the substrate that is opposite to another side of the substrate at which the metasurface is disposed, and configured to receive the light from the metasurface.
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Patent Agency Ranking
公开(公告)号：US10704957B2
公开(公告)日：2020-07-07
申请号：US16302400
申请日：2017-08-09
Applicant: Sony Corporation
Inventor： Hitoshi Mitani , Masafumi Wakazono
Abstract: There is provided an imaging device including: an imaging section including pixels that generate pixel signals on the basis of incident light, the pixels including a polarization pixel having a predetermined polarization direction and a non-polarization pixel; and a polarization rotating section provided on an incidence plane side of the imaging section, and configured to rotate a polarization direction of the incident light.
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公开(公告)号：US10690595B2
公开(公告)日：2020-06-23
申请号：US16319155
申请日：2017-07-18
Applicant: Agency for Science, Technology and Research
Inventor： Chi Lok Wong , Malini Olivo
IPC: G01J4/00 , G01N21/552 , G01N21/21 , G01J3/447 , G01N33/543 , G01J3/02 , G01N21/05 , G01N21/77
Abstract: Various embodiments may provide an optical sensing device based on surface plasmon resonance (SPR). The optical sensing device may include an optical arrangement configured to provide a first polarization light beam and a second polarization light beam, and a first optical member including a sensing surface, the first optical member configured to receive the first and second polarization light beams and reflect the first and second polarization light beams at the sensing surface. The optical sensing device may further include a second optical member arranged to receive the reflected first and second polarization light beams from the first optical member and configured to separate the reflected first and second polarization light beams in a first direction and a second direction, respectively. The optical device may additionally include a detector arrangement configured to detect the reflected first and second polarization light beams from the second optical member.
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公开(公告)号：US20200149966A1
公开(公告)日：2020-05-14
申请号：US16678194
申请日：2019-11-08
Applicant: SETI INSTITUTE
Inventor： William B. Sparks
Abstract: Embodiments of a system and a method for polarimetry using static geometric manipulation of the state of polarization are disclosed. According to one embodiment, a spectropolarimeter comprises a retarder having a geometrically changing fast axis. The fast axis changes along a polarimetric dimension. The spectropolarimeter has a polarization analyzer and a spectrographic optical platform. The spectrographic optical platform has a slit in a spatial dimension same as the polarimetric dimension of the retarder; a collimator; a dispersing element for dispersing spectral components of light received from the collimator along a spectral dimension that is perpendicular to the spatial dimension of the slit; a focusing optic; and a two-dimensional detector array. Using a quarter wave retarder full Stokes polarimetry can be provided though a half wave retarder can also be used.
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公开(公告)号：US10436644B2
公开(公告)日：2019-10-08
申请号：US15765698
申请日：2016-10-06
Applicant: Hinds Instruments, Inc.
Inventor： Baoliang Wang
Abstract: Example embodiments of methods, apparatus, and systems for measuring polarimetric parameters using spectroscopy are disclosed herein. Particular embodiments concern circular dichroism (CD) spectrometers that use a vertically aligned beam. In such embodiments, the solution being analyzed may have a top surface that forms a convex or concave meniscus, creating a surface through which the measuring beam passes that may refract the beam in undesirable ways. Accordingly, particular embodiments of the disclosed technology include one or more meniscus-compensating (meniscus-effect-reducing) components or subsystems. These components and/or subsystems can be used alone or in combination with one another to reduce the undesirable refractive effects caused by the meniscus at the solution's surface, thereby improving the resulting quality of the spectroscopy measurement and potentially improving the speed with which CD spectroscopy can be performed.
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公开(公告)号：US10393579B2
公开(公告)日：2019-08-27
申请号：US15755765
申请日：2016-08-15
Applicant: Robert Bosch GmbH
Inventor： Ingo Herrmann , Martin Husnik , Eugen Baumgart , Christian Huber , Benedikt Stein
Abstract: A miniature spectrometer includes an optical system, a polarization interferometer with a polarizer and a Savart element and an analyzer, a detection unit with a detector, and a data unit. The optical system of the miniature spectrometer is configured as a diffuser.
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