公开(公告)号：US11921284B2

公开(公告)日：2024-03-05

申请号：US17207177

申请日：2021-03-19

Applicant: Raytheon Company

Inventor： Eric Rogala ,  Gerald P. Uyeno ,  Sean D. Keller

IPC: G02B26/08 ,  G02B3/08 ,  G02B7/182 ,  G02B17/00

CPC classification number: G02B26/0841 ,  G02B3/08 ,  G02B7/182 ,  G02B17/002

Abstract: A zoom system includes a collection optic L1 and a reflective Fresnel Lens L2 having a variable focal length. The reflective Fresnel Lens L2 is implemented with a MEMS MMA in which the mirrors tip, tilt and piston form and alter the reflective Fresnel Lens to focus light at a common focal point to set the variable focal length f2, hence the magnification M. In different embodiments, the zoom system may be configured to be “focal” or “afocal”. In the focal system, both L1 and L2 are fixed such that the system affects the net convergence or divergence of the magnified beam. In an afocal system, a mechanism is used to translate L2 to maintain a separation between L1 and L2 of d=f1+f2 as f2 is varied to change the magnification M.

公开(公告)号：US11837840B2

公开(公告)日：2023-12-05

申请号：US17009453

申请日：2020-09-01

Applicant: Raytheon Company

Inventor： Gerald P. Uyeno ,  Sean D. Keller ,  Benn H. Gleason

IPC: G01S17/66 ,  G01S17/86 ,  G02B26/08 ,  H01S3/00 ,  G01S17/42 ,  G06T7/20 ,  B23K26/06 ,  G01S7/481 ,  G01C3/08

CPC classification number: H01S3/0071 ,  B23K26/0643 ,  G01S7/4814 ,  G01S17/42 ,  G01S17/66 ,  G01S17/86 ,  G06T7/20 ,  G01C3/08 ,  G02B26/0833

Abstract: A multiple target tracker and beam steerer utilizes a MEMs MMA for beam steering to simultaneously illuminate multiple tracked targets per frame. The MMA can be adaptively segmented to change the number of output beams, and the power in a given beam, based on a list of tracked targets, range to targets, threat level etc. The MMA can be adaptively configured to simultaneously perform one or more Designation, Range Finding and Active Imaging modes on the same or different tracked targets. The MMA can be segmented so that each segment includes a plurality of mirrors to “oversample” the input beam. The mirrors in a given segment may be controlled to provide wavefront correction to the corresponding output beam.

公开(公告)号：US11747445B2

公开(公告)日：2023-09-05

申请号：US17411859

申请日：2021-08-25

Applicant: Raytheon Company

Inventor： Sean D. Keller ,  Gerald P. Uyeno ,  Zachary D. Barker

IPC: G01S7/48 ,  G01S3/781 ,  G01S3/787 ,  G02B13/08

CPC classification number: G01S7/4804 ,  G01S3/781 ,  G01S3/787 ,  G02B13/08

Abstract: A warning receiver includes an anamorphic lens positioned to receive light within a field-of-view (FOV) defined by first and second angles that are orthogonal to each other and compress the light along the first orthogonal angle into a single line along the second orthogonal angle. A dispersive element is positioned to separate the single line of light into a plurality of wavelengths to produce a two-dimensional light field indexed by the second orthogonal angle and wavelength. A pixelated detector is positioned to receive the light field and readout electrical signals indexed by the second orthogonal angle and wavelength. A processor coupled to the pixelated detector process the electrical signals to detect and characterize an optical source within the FOV.

公开(公告)号：US20230101430A1

公开(公告)日：2023-03-30

申请号：US17725872

申请日：2022-04-21

Applicant: Raytheon Company

Inventor： Sean D. Keller ,  David J. Knapp ,  Jon E. Leigh

IPC: G01S7/497 ,  G01S7/481 ,  G02B27/00

Abstract: A system and method for measurement and correction of aero-optical and aero-thermal effects to an EO/IR sensor's window/dome on a supersonic flight-vehicle. Range-gating of laser pulses measures and separates aerodynamic and atmospheric effects. Separate control algorithms and control loops at different update rates both simplifies the control algorithms and improves overall performance. The use of a MEMS MMA having tip/tilt/piston capabilities as the deformable mirror to provide wavefront correction enhances overall performance. The corrected laser pulses may also be used to actively illuminate a target to provide both active and passive detection.

公开(公告)号：US20230068495A1

公开(公告)日：2023-03-02

申请号：US17411859

申请日：2021-08-25

Applicant: Raytheon Company

Inventor： Sean D. Keller ,  Gerald P. Uyeno ,  Zachary D. Barker

IPC: G01S7/48 ,  G01S3/787 ,  G01S3/781

Abstract: A warning receiver includes an anamorphic lens positioned to receive light within a field-of-view (FOV) defined by first and second angles that are orthogonal to each other and compress the light along the first orthogonal angle into a single line along the second orthogonal angle. A dispersive element is positioned to separate the single line of light into a plurality of wavelengths to produce a two-dimensional light field indexed by the second orthogonal angle and wavelength. A pixelated detector is positioned to receive the light field and readout electrical signals indexed by the second orthogonal angle and wavelength. A processor coupled to the pixelated detector process the electrical signals to detect and characterize an optical source within the FOV.

公开(公告)号：US20220229160A1

公开(公告)日：2022-07-21

申请号：US17150330

申请日：2021-01-15

Applicant: Raytheon Company

Inventor： Gerald P. Uyeno ,  Sean D. Keller ,  Benn H. Gleason

IPC: G01S7/481 ,  G01S7/484 ,  G01S17/10 ,  G01S7/4861

Abstract: Optical systems and methods for object detection and location. One example of an optical system includes a laser radar optical source positioned to emit a pulsed laser beam, a MEMS MMA positioned to scan the beam in a linear scan over a first area of a scene, a laser radar detector positioned to receive and integrate a reflection of the beam, a read-out integrated circuit (ROIC) configured to provide a first read-out signal based on the integrated reflection, and a controller configured to receive the first read-out signal, determine a range to the first area based on a time of flight of the pulsed laser beam, and identify a presence of an object within the scene based on a signal level of the first read-out signal, the first signal level corresponding to a reflectivity of a portion of the object within the first area of the scene. The MEMS MMA being configurable to shape the pulsed laser beam to adjust size, focus or intensity profile or to produce deviations in the wavefront of the beam to compensate for path length differences or atmospheric distortion. The MEMS MMA being configurable to produce and independently steer a plurality of pulsed laser beams of the same or different wavelengths.

公开(公告)号：US11333557B2

公开(公告)日：2022-05-17

申请号：US16856680

申请日：2020-04-23

Applicant: Raytheon Company

Inventor： Gerald P. Uyeno ,  Sean D. Keller ,  Benn Gleason

IPC: G01J5/06 ,  G02B13/14 ,  H04B10/80 ,  H04B10/516 ,  G02B27/10 ,  F25D19/00 ,  G01J5/061 ,  F25B9/14 ,  G01J5/0806

Abstract: An optically powered cryogenic FPA with an optical data link eliminates electrical penetrations of the cryogenic chamber for power delivery thereby reducing heat leaks into the cold volume by copper wires and EMI. An optical splitter receives and separates an optical input signal into an optical carrier signal, an optical Data IN signal and an optical power signal. An optical-to-electrical (O/E) converter converts the optical power signal into an electrical power signal, which is converted into a plurality of DC voltage signals to supply power within the chamber. An optical data link modulates the optical carrier signal with electrical signals from the ROIC to form and output an optical Data OUT signal.

公开(公告)号：US20220137395A1

公开(公告)日：2022-05-05

申请号：US17009453

申请日：2020-09-01

Applicant: Raytheon Company

Inventor： Gerald P. Uyeno ,  Sean D. Keller ,  Benn H. Gleason

IPC: G02B26/08 ,  H01S3/00 ,  G06T7/20 ,  B23K26/06 ,  G01S17/66 ,  G01S7/481

Abstract: A multiple target tracker and beam steerer utilizes a MEMs MMA for beam steering to simultaneously illuminate multiple tracked targets per frame. The MMA can be adaptively segmented to change the number of output beams, and the power in a given beam, based on a list of tracked targets, range to targets, threat level etc. The MMA can be adaptively configured to simultaneously perform one or more Designation, Range Finding and Active Imaging modes on the same or different tracked targets. The MMA can be segmented so that each segment includes a plurality of mirrors to “oversample” the input beam. The mirrors in a given segment may be controlled to provide wavefront correction to the corresponding output beam.

公开(公告)号：US11283169B2

公开(公告)日：2022-03-22

申请号：US16822873

申请日：2020-03-18

Applicant: Raytheon Company

Inventor： Gerald P. Uyeno ,  Sean D. Keller ,  Benn Gleason

IPC: H01Q3/26 ,  G01S13/89

Abstract: An RF imaging receiver using photonic spatial beam processing focuses a composite optical signal into a spot on an optical detector array to extract an image of an RF scene. The receiver steers the composite optical signal to move the location of the spot to increase the detected power in the image and selectively turns off one or more detector pixels around the spot to reduce noise in the image.

公开(公告)号：US11212010B2

公开(公告)日：2021-12-28

申请号：US16821530

申请日：2020-03-17

Applicant: Raytheon Company

Inventor： Gerald P. Uyeno ,  Sean D. Keller ,  Benn Gleason

IPC: H04B10/61 ,  H04B1/16 ,  H04B10/2575

Abstract: An RF imaging receiver using photonic spatial beam processing is provided with an optical beam steerer that acts on the individual modulated optical signals to induce individual phase delays that produce a phase delay with a linear term, and possibly spherical or aspherical terms, across a two-dimensional wavefront of the composite optical signal to steer the composite optical signal and move the location of the spot on the optical detector array. The optical beam steerer may change the path length or a refractive index for each of the modulated optical signals to induce the requisite phase delays. The optical beam steerer may be implemented, for example, with a Risley prism or liquid crystal or MEMs spatial light modulator.