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1. 发明授权

US11415700B2 Multi-element Fabry-Perot etalon interferometer for direct detection lidar 有权
公开(公告)号：US11415700B2
公开(公告)日：2022-08-16
申请号：US16079053
申请日：2017-02-09
申请人： MICHIGAN AEROSPACE CORPORATION
发明人： Dominique Fourguette , David Zuk
IPC分类号： G01S17/95 , G01S7/481 , G01S17/58
摘要： A number of etalons together are used to extract the velocity, density and temperature of a scattering medium, such as the atmosphere. An optical air data sensor system incorporates the structure and operation for outputting laser light at a volume of air so as to be scattered by molecules and aerosols in the air volume being scanned; receiving the scattered laser light via a collecting optics assembly; splitting the received scattered laser light from the input optical fiber into a plurality of scattered light emissions; collimating each of the plurality of scattered light emissions; inputting the plurality of collimated light emissions into corresponding ones of a plurality of Fabry-Perot etalons; and imaging each of the plurality of collimated light emissions from the plurality of Fabry-Perot onto corresponding ones of a plurality of non-imaging detectors.

2. 发明授权

US11413978B2 Battery charging system for drones 有权
公开(公告)号：US11413978B2
公开(公告)日：2022-08-16
申请号：US16969470
申请日：2019-02-13
申请人： Michigan Aerospace Corporation
发明人： Will Johnson
IPC分类号： B60L53/35 , B60L53/16 , B64C39/02 , H02J7/00
摘要： A charging system incorporates at least one motor; conductive charging arms rotatably coupled to the motor; a controller coupled to the motor and configured to rotate the conductive charging arms; and a sensor configured to sense the presence of a powered device and provide a signal to notify the controller of the presence of the powered device. In response to receiving the signal, the controller controls the motor to rotate the conductive arms to positions of electrical charging contact with the powered device. The powered device can be a drone powered by a rechargeable battery. The positions of electrical charging contact include electrical connections to terminals of the rechargeable battery. The charging system may also incorporate the feature of the motor having a stepper motor coupled to each of the conductive arms.

3. 发明授权

US10627522B2 System and method for an edge injection etalon 有权
公开(公告)号：US10627522B2
公开(公告)日：2020-04-21
申请号：US15124837
申请日：2015-03-12
申请人： Michigan Aerospace Corporation
发明人： Paul Byron Hays , Scott K. Lindemann
IPC分类号： G01C3/08 , G01S17/95 , G01S7/481
CPC分类号： G01S17/95 , G01S7/4812
摘要： The invention is directed to a device and method for conducting measurement of a Doppler shift caused by molecular and aerosol movement while simultaneously providing measurement of temperature using LIDAR. The device incorporates a light source; and a Fabry-Perot etalon having a resonant cavity formed with two plane parallel reflecting surfaces, wherein the light source is positioned relative to the a Fabry-Perot etalon such that light is injected into a plane parallel resonant cavity of the Fabry-Perot etalon at an angle of incidence other than normal to the reflecting surfaces. The Fabry-Perot etalon may be formed with each of the parallel reflecting surfaces having different reflectivities. The light source may be positioned to direct the light to bypass a first reflective surface of the plane parallel resonator cavity, and/or implemented using a divergent light source. In addition, the Fabry-Perot etalon may be formed to include an aperture in at least one mirror surface or an edge portion in at least one mirror surface through which the light is directed into the resonant cavity. The device may also incorporate a detector for detecting a fringe pattern outputted by the Fabry-Perot etalon.

4. 发明申请

US20180195902A1 TITLED FILTER IMAGING SPECTROMETER 审中-公开
公开(公告)号：US20180195902A1
公开(公告)日：2018-07-12
申请号：US15865446
申请日：2018-01-09
申请人： Michigan Aerospace Corporation
发明人： Paul Bryon HAYS
IPC分类号： G01J3/02 , G01N21/64 , G01J3/44 , G01J3/26
CPC分类号： G01J3/0229 , G01J3/0208 , G01J3/021 , G01J3/26 , G01J3/2803 , G01J3/36 , G01J3/4406 , G01J2003/1213 , G01J2003/1221 , G01J2003/1239 , G01J2003/1243 , G01J2003/2826 , G01N21/6456 , G01N2021/635 , G01N2021/6417 , G01N2021/6471 , G01N2201/0616
摘要： A Tilted Filter Imaging Spectrometer (TFIS) is designed to be a very small optical spectrometer having very high sensitivity and spectral resolution. These properties suggest the use of the device as a Fraunhofer Line discriminator (FLD) to detect objects that fluoresce in sunlight. According to at least one embodiment of the present invention, the tilted filter imaging spectrometer incorporates at least one dielectric filter, at least one imaging lens structure; and an imaging detector operatively positioned at a focal length of the imaging lens structure, wherein the dielectric filter is operatively positioned at an angle relative to an optical axis of the imaging lens structure. In at least a second embodiment, the tilted filter imaging spectrometer further incorporates at least one Fabry-Perot Etalon, wherein the Fabry Perot Etalon and the dielectric filter are operatively positioned at angles relative to an optical axis of the imaging lens structure.

5. 发明申请

US20170023679A1 SYSTEM AND METHOD FOR AN EDGE INJECTION ETALON 审中-公开
标题翻译：边缘注射ETALON的系统和方法
公开(公告)号：US20170023679A1
公开(公告)日：2017-01-26
申请号：US15124837
申请日：2015-03-12
申请人： Michigan Aerospace Corporation
发明人： Paul Byron HAYS , Scott K. LINDEMANN
IPC分类号： G01S17/95 , G01S7/481
CPC分类号： G01S17/95 , G01J3/26 , G01P5/26 , G01S7/4812 , G01S7/4816 , G01S17/58 , Y02A90/19
摘要： The invention is directed to a device and method for conducting measurement of a Doppler shift caused by molecular and aerosol movement while simultaneously providing measurement of temperature using LIDAR. The device incorporates a light source; and a Fabry-Perot etalon having a resonant cavity formed with two plane parallel reflecting surfaces, wherein the light source is positioned relative to the a Fabry-Perot etalon such that light is injected into a plane parallel resonant cavity of the Fabry-Perot etalon at an angle of incidence other than normal to the reflecting surfaces. The Fabry-Perot etalon may be formed with each of the parallel reflecting surfaces having different reflectivities. The light source may be positioned to direct the light to bypass a first reflective surface of the plane parallel resonator cavity, and/or implemented using a divergent light source. In addition, the Fabry-Perot etalon may be formed to include an aperture in at least one mirror surface or an edge portion in at least one mirror surface through which the light is directed into the resonant cavity. The device may also incorporate a detector for detecting a fringe pattern outputted by the Fabry-Perot etalon.
摘要翻译：本发明涉及一种用于进行由分子和气溶胶运动引起的多普勒频移的测量的装置和方法，同时使用LIDAR提供测量温度。该装置包含光源; 以及具有形成有两个平面平行反射表面的谐振腔的法布里 - 珀罗标准具，其中光源相对于法布里 - 珀罗标准具定位，使得光注入法布里 - 珀罗标准具的平面共振腔中与反射表面正交的入射角。法布里 - 珀罗标准具可以形成为具有不同反射率的每个平行反射表面。光源可以被定位成引导光旁路平面谐振腔的第一反射表面，和/或使用发散光源来实现。此外，法布里 - 珀罗标准具可以被形成为在至少一个镜面中的至少一个镜面或边缘部分中包括孔，光通过该孔被引导到谐振腔中。该装置还可以包括用于检测由法布里 - 珀罗标准具输出的条纹图案的检测器。

6. 发明授权

US11976971B2 Spectrograph recycling 有权
公开(公告)号：US11976971B2
公开(公告)日：2024-05-07
申请号：US17272667
申请日：2019-09-04
申请人： Michigan Aerospace Corporation
发明人： Will Johnson
IPC分类号： G01J3/02 , F21V8/00 , G01J3/18 , G01J3/28 , G01S17/95
CPC分类号： G01J3/0221 , G01J3/18 , G01J3/2803 , G01S17/95 , G02B6/0008 , G01J2003/2813
摘要： Spectrographic measurements are often limited by the amount of light that is available. Photons that are not collected or measured reduce the signal to noise and therefore reduce measurement precision. This invention collects the zero order light and sends it through the spectrometer again. In an atmospheric LIDAR, the zero order recycling is estimated to increase the rotational Raman signal by an additional 20%. A grating based spectrometer where the zero order light is collected by a lens or mirror and focused into a fiber optic that sends the light to the input slit where it is directed into the spectrometer again. There can be a plurality of recycle fibers. The detector can be either a single linear array or a two dimensional array such as a CCD or CMOS camera.

7. 发明申请

US20210255213A1 MICRO-FABRICATED OPTICAL MOTION SENSOR 有权
公开(公告)号：US20210255213A1
公开(公告)日：2021-08-19
申请号：US17174175
申请日：2021-02-11
申请人： Southern Methodist University , Michigan Aerospace Corporation
发明人： Volkan Otugen , Bruce Gnade , Dominique Fourguette
IPC分类号： G01P15/093 , G02B6/43 , G01P13/00 , G01V1/18
摘要： An optical motion sensor includes a substrate, a whispering-gallery-mode-based optical resonator disposed on the substrate, a mass-spring-damper system disposed on the substrate proximate to a first side of the whispering-gallery-mode-based optical resonator, and a waveguide or optical fiber. The whispering-gallery-mode-based optical resonator has a substantially circular cross-section. A gap separates an end of the mass-spring-damper system from the whispering-gallery-mode-based optical resonator. The waveguide or optical fiber abuts a second side of the whispering-gallery-mode-based optical resonator that is substantially opposite to the first side.

8. 发明申请

US20150116692A1 SYSTEM AND METHOD FOR SCAN RANGE GATING 有权
标题翻译：扫描范围增益的系统和方法
公开(公告)号：US20150116692A1
公开(公告)日：2015-04-30
申请号：US14397950
申请日：2013-03-18
申请人： Michigan Aerospace Corporation
发明人： David M. Zuk , Scott Lindemann
IPC分类号： G01S17/10
CPC分类号： G01S17/107 , G01S7/4817 , G01S7/4818 , G01S17/95 , Y02A90/19
摘要： A system for scanning light to define a range gated signal includes a pulsed coherent light source that directs light into the atmosphere, a light gathering instrument that receives the light modified by atmospheric backscatter and transfers the light onto an image plane, a scanner that scans collimated light from the image plane to form a range gated signal from the light modified by atmospheric backscatter, a control circuit that coordinates timing of a scan rate of the scanner and a pulse rate of the pulsed coherent light source so that the range gated signal is formed according to a desired range gate, an optical device onto which an image of the range gated signal is scanned, and an interferometer to which the image of the range gated signal is directed by the optical device. The interferometer is configured to modify the image according to a desired analysis.
摘要翻译：用于扫描光以限定范围选通信号的系统包括将光引导到大气中的脉冲相干光源，收集由大气反向散射改变的光并将光传输到图像平面上的光收集仪器，扫描准直的扫描仪来自图像平面的光从由大气背散射改变的光形成范围门控信号，控制扫描仪的扫描速率的定时和脉冲相干光源的脉冲速率的控制电路，使得形成范围门控信号根据期望的范围门，扫描范围门控信号的图像的光学装置以及由光学装置引导范围选通信号的图像的干涉仪。干涉仪被配置为根据期望的分析修改图像。

9. 发明授权

US11656241B2 Micro-fabricated optical motion sensor 有权
公开(公告)号：US11656241B2
公开(公告)日：2023-05-23
申请号：US17174175
申请日：2021-02-11
申请人： Southern Methodist University , Michigan Aerospace Corporation
发明人： Volkan Otugen , Bruce Gnade , Dominique Fourguette
IPC分类号： G01P15/093 , G01V1/18 , G01P13/00 , G02B6/43
CPC分类号： G01P15/093 , G01P13/00 , G01V1/18 , G02B6/43
摘要： An optical motion sensor includes a substrate, a whispering-gallery-mode-based optical resonator disposed on the substrate, a mass-spring-damper system disposed on the substrate proximate to a first side of the whispering-gallery-mode-based optical resonator, and a waveguide or optical fiber. The whispering-gallery-mode-based optical resonator has a substantially circular cross-section. A gap separates an end of the mass-spring-damper system from the whispering-gallery-mode-based optical resonator. The waveguide or optical fiber abuts a second side of the whispering-gallery-mode-based optical resonator that is substantially opposite to the first side.

10. 发明申请

US20210341334A1 SPECTROGRAPH RECYCLING 有权
公开(公告)号：US20210341334A1
公开(公告)日：2021-11-04
申请号：US17272667
申请日：2019-09-04
申请人： Michigan Aerospace Corporation
发明人： Will JOHNSON
IPC分类号： G01J3/02 , F21V8/00 , G01J3/18 , G01J3/28 , G01S17/95
摘要： Spectrographic measurements are often limited by the amount of light that is available. Photons that are not collected or measured reduce the signal to noise and therefore reduce measurement precision. This invention collects the zero order light and sends it through the spectrometer again. In an atmospheric LIDAR, the zero order recycling is estimated to increase the rotational Raman signal by an additional 20%. A grating based spectrometer where the zero order light is collected by a lens or mirror and focused into a fiber optic that sends the light to the input slit where it is directed into the spectrometer again. There can be a plurality of recycle fibers. The detector can be either a single linear array or a two dimensional array such as a CCD or CMOS camera.

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