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公开(公告)号：US20170370677A1
公开(公告)日：2017-12-28
申请号：US15195594
申请日：2016-06-28
Applicant: Rosemount Aerospace Inc.
Inventor： Robert Rutkiewicz , Gary Halama
CPC classification number: F41G7/26 , F41G7/008 , F41G7/2253 , F41G7/226 , F41G7/2293 , G01S3/784 , H04N5/04 , H04N5/30 , H04N5/33
Abstract: Apparatus and associated methods relate to a seeker for a Semi-Active Laser (SAL) guided missile. The seeker has a Short-Wave InfraRed (SWIR) camera and a Pulse Timing Logic (PTL) detector. The PTL detector has a SWIR photo detector axially aligned with a lens stack of the SWIR camera. The SWIR photo detector is configured to detect a sequence of SWIR pulses generated by a SAL target designator and reflected by a designated target. The PTL detector has a pulse timer configured to identify a sequence pattern of the detected sequence of SWIR pulses, and to predict a timing of a next SWIR pulse in the identified sequence pattern so as to synchronize exposure of the SWIR camera to capture a next image of the designated target at the predicted timing of the next SWIR pulse. Such exposure timing can advantageously improve the signal to noise ratio of the next image.
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公开(公告)号：US20220404266A1
公开(公告)日：2022-12-22
申请号：US17350715
申请日：2021-06-17
Applicant: Rosemount Aerospace Inc.
Inventor： Gary Halama
Abstract: A contamination sensor for an optical sensor observation window includes a source, two prisms, a detector, and a controller. The source can emit a collimated light beam at an incident angle that is greater than a critical angle of an interface between a fluid and the window. The window has a refractive index greater than the refractive index of the fluid. The prisms can direct the collimated light beam within the window such that the collimated light beam reflects within a contamination detection zone of the window. The detector can receive the collimated light beam. The controller can communicate with the source and detector. The controller can calculate an emission/detection ratio defined by a difference between an amount of light emitted by the source and an amount of light that passes from the source to the detector by a total internal reflectance of the window.
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公开(公告)号：US11644411B2
公开(公告)日：2023-05-09
申请号：US17350715
申请日：2021-06-17
Applicant: Rosemount Aerospace Inc.
Inventor： Gary Halama
CPC classification number: G01N21/15 , B64D43/00 , G01N2021/157
Abstract: A contamination sensor for an optical sensor observation window includes a source, two prisms, a detector, and a controller. The source can emit a collimated light beam at an incident angle that is greater than a critical angle of an interface between a fluid and the window. The window has a refractive index greater than the refractive index of the fluid. The prisms can direct the collimated light beam within the window such that the collimated light beam reflects within a contamination detection zone of the window. The detector can receive the collimated light beam. The controller can communicate with the source and detector. The controller can calculate an emission/detection ratio defined by a difference between an amount of light emitted by the source and an amount of light that passes from the source to the detector by a total internal reflectance of the window.
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公开(公告)号：US09857145B1
公开(公告)日：2018-01-02
申请号：US15195594
申请日：2016-06-28
Applicant: Rosemount Aerospace Inc.
Inventor： Robert Rutkiewicz , Gary Halama
CPC classification number: F41G7/26 , F41G7/008 , F41G7/2253 , F41G7/226 , F41G7/2293 , G01S3/784 , H04N5/04 , H04N5/30 , H04N5/33
Abstract: Apparatus and associated methods relate to a seeker for a Semi-Active Laser (SAL) guided missile. The seeker has a Short-Wave InfraRed (SWIR) camera and a Pulse Timing Logic (PTL) detector. The PTL detector has a SWIR photo detector axially aligned with a lens stack of the SWIR camera. The SWIR photo detector is configured to detect a sequence of SWIR pulses generated by a SAL target designator and reflected by a designated target. The PTL detector has a pulse timer configured to identify a sequence pattern of the detected sequence of SWIR pulses, and to predict a timing of a next SWIR pulse in the identified sequence pattern so as to synchronize exposure of the SWIR camera to capture a next image of the designated target at the predicted timing of the next SWIR pulse. Such exposure timing can advantageously improve the signal to noise ratio of the next image.
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