-
公开(公告)号：US20210372767A1
公开(公告)日：2021-12-02
申请号：US16757720
申请日：2018-10-19
Applicant: Nokia Technologies Oy
Inventor： Xin YUAN
Abstract: Described herein are an apparatus, system, and method for detecting light. An apparatus can include means for modulating an input beam of light wherein the input beam of light is obtained from an optical coherence tomography arrangement; means for dispersing the modulated beam of light; and means for detecting the dispersed beam of light and converting the detected beam of light into an electrical output signal. An apparatus can include a modulator configured to spatially modulate light; a dispersing element configured to disperse modulated light, and a detector configured to detect dispersed light and convert the detected light into electrical output signals. A method can include spatially modulating a beam of light, dispersing the modulated beam of light, detecting the dispersed beam of light, converting the detecting beam of light into electrical output signals, and providing a three-dimensional image of at least a part of an object.
-
Patent Agency Ranking
公开(公告)号：US20220196385A1
公开(公告)日：2022-06-23
申请号：US17605946
申请日：2020-04-16
Applicant: NOKIA TECHNOLOGIES OY
Inventor： Xin YUAN , Paul WILFORD , Mu QIAO , Xuan LIU
IPC: G01B9/02091 , G01B9/02015 , G01J3/02
Abstract: An apparatus comprising: a double path interferometer comprising a sample path for an object and a reference path; a source of linearly polarized light for the double path interferometer, a phase plate positioned in the sample path; means for superposing the sample path and reference path to create a beam of light for detection; means for spatially modulating the beam of light to produce a modulated beam of light; means for dispersing the modulated beam of light to produce a spatially modulated and dispersed beam of light; a first detector, a second detector, and means for splitting the spatially modulated and dispersed beam of light, wherein light of a first linear polarization is directed to the first detector and light of a second linear polarization, orthogonal to the first linear polarization, is directed to the second detector.
-
公开(公告)号：US20220011090A1
公开(公告)日：2022-01-13
申请号：US17294221
申请日：2019-11-13
Applicant: NOKIA TECHNOLOGIES OY
Inventor： Xin YUAN , Paul WILFORD
Abstract: Apparatus and method for detecting light, the apparatus comprising: means for splitting an input beam of light, which is obtained from an optical coherence tomography arrangement into at least a first and a second beam of light; means for modulating the first beam of light to provide a first modulated beam of light and means for modulating the second beam of light to provide a second modulated beam of light; means for dispersing the first modulated beam of light to provide a first dispersed beam of light and means for dispersing the second modulated beam of light to provide a second dispersed beam of light; means for detecting the first dispersed beam of light and means for detecting the second dispersed beam of light, the means for detecting being configured to convert the detected beams of light into electrical output signals.
-
公开(公告)号：US20210404790A1
公开(公告)日：2021-12-30
申请号：US17356781
申请日：2021-06-24
Applicant: NOKIA TECHNOLOGIES OY
Abstract: An apparatus is provided that includes a detector configured to detect, separately during separate exposure periods of multiple exposure periods, spatially modulated light. The apparatus also includes a spatial modulator configured to apply a different spatial modulation to received light separately during separate exposure periods of the multiple exposure periods, to produce spatially modulated light. The apparatus further includes one or more optical elements configured to condense the spatially modulated light for detection by the detector. A system that includes the apparatus and a corresponding method and a computer-readable storage medium are also provided.
-
公开(公告)号：US20210389117A1
公开(公告)日：2021-12-16
申请号：US17345098
申请日：2021-06-11
Applicant: NOKIA TECHNOLOGIES OY
Abstract: An apparatus is provided that includes a detector configured to detect, cumulatively during an exposure period, spatially modulated light. The apparatus also includes modulation means for applying multiple different effective spatial modulations to received light, during the exposure period. A different effective spatial modulation is applied to received light in dependence upon a time during the exposure period of the detector and a frequency of the light, to produce spatially modulated light for detection by the detector.
-
6.发明申请公开(公告)号：US20210049791A1
公开(公告)日：2021-02-18
申请号：US17041934
申请日：2019-03-28
Applicant: NOKIA TECHNOLOGIES OY
Inventor： Xin YUAN , Shirin JALALI
Abstract: A method is provided for decompressing images captured by a compressive imaging system in conjunction with a compressive imaging application. The method comprises determining an estimation error et based on a difference between: (i) a measurement y captured by the compressive imaging system and (ii) a product of a sensing matrix H and a signal xt that has been estimated. The method comprises determining a gradient descent st+1 based on a sum of: (i) the signal xt that has been estimated and (ii) a product of a step size μ, a vector formulation of the sensing matrix HT and the estimation error et. The method comprises projecting the gradient descent st+1 comprising applying a compression function f and a decompression function g to estimate the signal xt+1. The method comprises iteratively repeating determining the estimation error et; determining the gradient descent st+1 and projecting the gradient descent st+1 to provide a reconstructed signal following a final iteration; and providing the reconstructed signal for display or storage.
-
-
-
-
-
Search Results
6
records
(took 0.017 seconds)
