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1.发明申请公开(公告)号：US20190049745A1
公开(公告)日：2019-02-14
申请号：US16162275
申请日：2018-10-16
Applicant: Raytheon Company
Inventor： Eric C. Fest , Jon E. Leigh
Abstract: Polarized pixelated filter sub-array is reconfigured to reduce sensitivity to misalignment. The condition number increases more slowly than the standard polarized pixelated filter sub-array as the misalignment increases. In different embodiments, the filter sub-array is configured such that the condition number has a finite bound at ½ pixel misalignment. The angular values of the polarizer filter array are determined to minimize the sensitivity of the condition number of the data reduction matrix to misalignment. This can be achieved by selecting angular values that minimize the expected value of the condition number E(CN) over the range of misalignment.
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2.发明申请POLARIZED PIXELATED FILTER ARRAY WITH REDUCED SENSITIVITY TO MISALIGNMENT FOR POLARIMETRIC IMAGING 审中-公开极化像差滤波器阵列，具有降低灵敏度，用于极化成像的缺失公开(公告)号：US20170059877A1
公开(公告)日：2017-03-02
申请号：US14836305
申请日：2015-08-26
Applicant: Raytheon Company
Inventor： Eric C. Fest , Jon E. Leigh
CPC classification number: G02B27/286 , G01J4/04 , G02B5/201 , G02B5/3025 , G06T7/344 , G06T2207/10048
Abstract: Polarized pixelated filter sub-array is reconfigured to reduce sensitivity to misalignment. The condition number increases more slowly than the standard polarized pixelated filter sub-array as the misalignment increases. In different embodiments, the filter sub-array is configured such that the condition number has a finite bound at ½ pixel misalignment. The angular values of the polarizer filter array are determined to minimize the sensitivity of the condition number of the data reduction matrix to misalignment. This can be achieved by selecting angular values that minimize the expected value of the condition number E(CN) over the range of misalignment.
Abstract translation: 重新配置极化像素化滤波器子阵列以降低对准偏移的灵敏度。 随着不对准的增加，条件数目比标准极化像素化滤波器子阵列慢得多。 在不同的实施例中，滤波器子阵列被配置为使得条件编号具有1/2像素未对准的有限界限。 确定偏振器滤光器阵列的角度值以将数据简化矩阵的条件数量的灵敏度最小化为未对准。 这可以通过选择在不对齐范围内使条件数E（CN）的期望值最小化的角度值来实现。
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公开(公告)号：US09726524B2
公开(公告)日：2017-08-08
申请号：US14510180
申请日：2014-10-09
Applicant: RAYTHEON COMPANY
Inventor： Eric C. Fest , Page E. King , Justan Forsyth
Abstract: Optical position encoding mechanisms and methods for use in reimaged optical imaging systems. In one example, a reimaged optical imaging system includes an imaging detector, an optical component, and at least one light source coupled to the optical component and configured to be reimaged onto the imaging detector, wherein a position of an image of the at least one light source at the imaging detector encodes a position of the optical component relative to the imaging detector.
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公开(公告)号：US09927289B2
公开(公告)日：2018-03-27
申请号：US14921774
申请日：2015-10-23
Applicant: Raytheon Company
Inventor： Eric C. Fest
CPC classification number: G01J1/0429 , B64C1/1484 , F41G7/2253 , F41G7/2293 , F42B10/46 , F42B15/08 , F42B15/34 , G01S3/781
Abstract: In flight vehicles subject to extreme aero-thermal heating of the optical window, the optical system is configured to look through an off-axis segment of the optical window and a polarizer is positioned in the optical path between the off-axis segment and the detector. The polarizer comprises at least one filter pixel that imparts a linear polarization of a certain angular value to filter the incident radiation as a function of its polarization. In the case of a sheet polarizer, the entire polarizer is aligned to the plane of incidence. The sheet polarizer preferentially filters the target radiation to increase the SNR at the detector. In the case of a microgrid polarizer, at least one and preferably multiple filter pixels in each sub-array aligned to the plane of incidence. The microgrid polarizer can produce data products including a radiance image, an AoLP image and a DoLP image, only the AoLP image removes the self-emitted window radiance and an gradient caused by non-uniform aero-thermal heating.
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公开(公告)号：US09741163B2
公开(公告)日：2017-08-22
申请号：US14978265
申请日：2015-12-22
Applicant: Raytheon Company
Inventor： Eric C. Fest
CPC classification number: G06T17/00 , G01B11/24 , G01J4/04 , G06T7/004 , G06T7/60 , G06T15/20 , G06T15/50 , G06T2200/04
Abstract: A system and method for more accurately generating the surface normal calibration maps φ(AoLP) and θ(DoLP,φ) to compensate for structured scene reflections for 3-D polarimetric imaging. This is accomplished using a microfacet scattering model to develop the functional form of a polarized bidirectional reflectance distribution function (BRDF) of the object surface. The ambient radiance is ray traced to the BRDF to create the calibration maps φ(AoLP) and θ(DoLP,φ), which may be combined into a single calibration map θ(DoLP, AoLP). These maps are applied to the AoLP and DoLP images to compute an array of surface normals, which are then mapped to form a 3-D image of the object.
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Patent Agency Ranking
公开(公告)号：US20170178399A1
公开(公告)日：2017-06-22
申请号：US14978265
申请日：2015-12-22
Applicant: Raytheon Company
Inventor： Eric C. Fest
CPC classification number: G06T17/00 , G01B11/24 , G01J4/04 , G06T7/004 , G06T7/60 , G06T15/20 , G06T15/50 , G06T2200/04
Abstract: A system and method for more accurately generating the surface normal calibration maps φ(AoLP) and θ(DoLP,φ) to compensate for structured scene reflections for 3-D polarimetric imaging. This is accomplished using a microfacet scattering model to develop the functional form of a polarized bidirectional reflectance distribution function (BRDF) of the object surface. The ambient radiance is ray traced to the BRDF to create the calibration maps φ(AoLP) and θ(DoLP,φ), which may be combined into a single calibration map θ(DoLP, AoLP). These maps are applied to the AoLP and DoLP images to compute an array of surface normals, which are then mapped to form a 3-D image of the object.
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公开(公告)号：US20160231472A1
公开(公告)日：2016-08-11
申请号：US14615562
申请日：2015-02-06
Applicant: Raytheon Company
Inventor： Vijay Murgai , Eric C. Fest
IPC: G02B5/02
CPC classification number: G02B5/0278 , B82Y20/00 , G02B5/0242 , G02B5/0284 , G02B2207/101
Abstract: A method of scattering light includes positioning a Nanocomposite Optical Ceramic (NCOC) diffuser to receive light and scattering the light with the NCOC diffuser. The NCOC diffuser is substantially Lambertian over a waveband range.
Abstract translation: 散射光的方法包括定位纳米复合光学陶瓷（NCOC）漫射器以接收光并且与NCOC扩散器散射光。 NCOC扩散器在波段范围内基本上是朗伯式的。
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8.发明授权公开(公告)号：US10969598B2
公开(公告)日：2021-04-06
申请号：US16162275
申请日：2018-10-16
Applicant: Raytheon Company
Inventor： Eric C. Fest , Jon E. Leigh
Abstract: Polarized pixelated filter sub-array is reconfigured to reduce sensitivity to misalignment. The condition number increases more slowly than the standard polarized pixelated filter sub-array as the misalignment increases. In different embodiments, the filter sub-array is configured such that the condition number has a finite bound at ½ pixel misalignment. The angular values of the polarizer filter array are determined to minimize the sensitivity of the condition number of the data reduction matrix to misalignment. This can be achieved by selecting angular values that minimize the expected value of the condition number E(CN) over the range of misalignment.
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公开(公告)号：US10234606B2
公开(公告)日：2019-03-19
申请号：US14615562
申请日：2015-02-06
Applicant: Raytheon Company
Inventor： Vijay Murgai , Eric C. Fest
Abstract: A method of scattering light includes positioning a Nanocomposite Optical Ceramic (NCOC) diffuser to receive light and scattering the light with the NCOC diffuser. The NCOC diffuser is substantially Lambertian over a waveband range.
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公开(公告)号：US20170115160A1
公开(公告)日：2017-04-27
申请号：US14921774
申请日：2015-10-23
Applicant: Raytheon Company
Inventor： Eric C. Fest
CPC classification number: G01J1/0429 , B64C1/1484 , F41G7/2253 , F41G7/2293 , F42B10/46 , F42B15/08 , F42B15/34 , G01S3/781
Abstract: In flight vehicles subject to extreme aero-thermal heating of the optical window, the optical system is configured to look through an off-axis segment of the optical window and a polarizer is positioned in the optical path between the off-axis segment and the detector. The polarizer comprises at least one filter pixel that imparts a linear polarization of a certain angular value to filter the incident radiation as a function of its polarization. In the case of a sheet polarizer, the entire polarizer is aligned to the plane of incidence. The sheet polarizer preferentially filters the target radiation to increase the SNR at the detector. In the case of a microgrid polarizer, at least one and preferably multiple filter pixels in each sub-array aligned to the plane of incidence. The microgrid polarizer can produce data products including a radiance image, an AoLP image and a DoLP image, only the AoLP image removes the self-emitted window radiance and an gradient caused by non-uniform aero-thermal heating.
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