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公开(公告)号：US12104907B2
公开(公告)日：2024-10-01
申请号：US17192978
申请日：2021-03-05
发明人： Joshua Lentz , Kevin Brink
CPC分类号： G01C21/025 , G02B5/10 , G02B19/0019 , G02B19/0076
摘要： A compact celestial tracker includes a platform, a rotation stage that rotatably coupled to the platform to rotate a plane of the platform about a rotation axis and that supports the platform on a substrate, an off-axis parabolic mirror mounted to one side of the platform and having a focal plane directed at an acute angle that is between the rotation axis and the plane of the platform to reflect and focus the beam at a point above another side of the platform, and a detector coupled to the other side of the platform to receive and detect the reflected and focused beam.
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公开(公告)号：US11353627B2
公开(公告)日：2022-06-07
申请号：US16851906
申请日：2020-04-17
发明人： Joshua Lentz , Kevin Brink
摘要： A star tracker includes imaging optics comprising a folding mirror, a lens, and a detector. The folding mirror bends light received from an optical axis through the lens that focuses the bent light onto the detector. The star tracker includes a steering mechanism that steers light from an adjustable field of view (FOV) to the optical axis of the imaging optics. The steering mechanism includes: (i) a first photonic crystal element comprising beam pointing spatially variant photonic crystals (SVPCs); (ii) a second photonic crystal element comprising beam pointing SVPCs that is positioned adjacent and axially aligned with the first photonic crystal element; and (iii) a housing that receives the first and second photonic crystal elements for independent rotation.
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公开(公告)号：US20210033849A1
公开(公告)日：2021-02-04
申请号：US16922079
申请日：2020-07-07
发明人： Joshua Lentz
摘要： An optical steering mechanism includes first and second Risley prisms that each comprise spatially variant photonic crystals. A support structure positions the first and second Risley prisms in parallel alignment with at least a selected one of the first and second axially rotatable to the other one to steer a light path through the optical steering mechanism.
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公开(公告)号：US20210318120A1
公开(公告)日：2021-10-14
申请号：US17192978
申请日：2021-03-05
发明人： Joshua Lentz , Kevin Brink
摘要： A compact celestial tracker includes a platform, a rotation stage that rotatably coupled to the platform to rotate a plane of the platform about a rotation axis and that supports the platform on a substrate, an off-axis parabolic mirror mounted to one side of the platform and having a focal plane directed at an acute angle that is between the rotation axis and the plane of the platform to reflect and focus the beam at a point above another side of the platform, and a detector coupled to the other side of the platform to receive and detect the reflected and focused beam.
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公开(公告)号：US20210033750A1
公开(公告)日：2021-02-04
申请号：US16851906
申请日：2020-04-17
发明人： Joshua Lentz , Kevin Brink
摘要： A star tracker includes imaging optics comprising a folding mirror, a lens, and a detector. The folding mirror bends light received from an optical axis through the lens that focuses the bent light onto the detector. The star tracker includes a steering mechanism that steers light from an adjustable field of view (FOV) to the optical axis of the imaging optics. The steering mechanism includes: (i) a first photonic crystal element comprising beam pointing spatially variant photonic crystals (SVPCs); (ii) a second photonic crystal element comprising beam pointing SVPCs that is positioned adjacent and axially aligned with the first photonic crystal element; and (iii) a housing that receives the first and second photonic crystal elements for independent rotation.
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