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公开(公告)号：US20220221339A1
公开(公告)日：2022-07-14
申请号：US17603487
申请日：2020-04-03
IPC分类号： G01J3/18 , G01B9/02091 , G01J3/02
摘要： A detector system for Fourier spectroscopy such as a spectral domain optical coherence tomography instrument includes a diffractive optic for diffracting the interfering light into angularly dispersed wavenumbers, a prism for reduces a nonlinear angular dispersion among the wavenumbers, and a focusing optic for converting the angularly dispersed wavenumbers from the prism into spatially distributed wavenumbers along a detector having an array of pixels. A field lens between the focusing optic and the detector has a freeform surface for more evenly distributing the wavenumbers along the array of pixels.
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公开(公告)号：US11675107B2
公开(公告)日：2023-06-13
申请号：US17018284
申请日：2020-09-11
CPC分类号： G02B1/002 , G02B27/0172 , G02B2027/013
摘要： A see-through reflective optical device includes: a reflective metasurface configured for a targeted design optical wavelength, wherein the reflective metasurface comprises a sub-wavelength periodic arrangement of meta-atoms formed by patterned isolated gap surface plasmon (GSP) resonators, where the patterned isolated GSP resonators comprise a patterned optically thin metal layer for the design wavelength, an optically thick metal layer for the design wavelength, and an insulator layer between the patterned optically thin metal layer and the optically thick metal layer; and an array of apertures of random positions and diameters greater than the targeted design wavelength formed through the reflective metasurface providing a designed percentage of light transparency through the reflective metasurface. The reflective metasurface of the see-through reflective optical device may comprise, e.g., a reflective diffraction grating metasurface, and may be used as a combiner element surface in a near eye display assembly.
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公开(公告)号：US20200011651A1
公开(公告)日：2020-01-09
申请号：US16446859
申请日：2019-06-20
摘要： Optical coherence tomography metrology systems with two highly telecentric objective lenses wherein one or both telecentric objectives can be arranged in a pseudo-bistatic configuration. One featured telecentric objective has a large scanning field of view relevant for broadband laser scanning applications where low uncertainty measurements are desired. Another featured telecentric objective has a large image space NA relevant as a standalone microscope objective or as a probing objective for optical coordinate measurement machines.
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公开(公告)号：US12085445B2
公开(公告)日：2024-09-10
申请号：US17603487
申请日：2020-04-03
IPC分类号： G01J3/18 , G01B9/02091 , G01J3/02 , G01J3/12
CPC分类号： G01J3/18 , G01B9/02091 , G01J3/0208 , G01J2003/1208
摘要： A detector system for Fourier spectroscopy such as a spectral domain optical coherence tomography instrument includes a diffractive optic for diffracting the interfering light into angularly dispersed wavenumbers, a prism for reduces a nonlinear angular dispersion among the wavenumbers, and a focusing optic for converting the angularly dispersed wavenumbers from the prism into spatially distributed wavenumbers along a detector having an array of pixels. A field lens between the focusing optic and the detector has a freeform surface for more evenly distributing the wavenumbers along the array of pixels.
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公开(公告)号：US11092425B2
公开(公告)日：2021-08-17
申请号：US16446859
申请日：2019-06-20
摘要： Optical coherence tomography metrology systems with two highly telecentric objective lenses wherein one or both telecentric objectives can be arranged in a pseudo-bistatic configuration. One featured telecentric objective has a large scanning field of view relevant for broadband laser scanning applications where low uncertainty measurements are desired. Another featured telecentric objective has a large image space NA relevant as a standalone microscope objective or as a probing objective for optical coordinate measurement machines.
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