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1.发明授权公开(公告)号：US10436957B2
公开(公告)日：2019-10-08
申请号：US15336336
申请日：2016-10-27
Inventor： Nelson V. Tabirian , Zhi J. Liao , David E. Roberts
IPC: G02B1/10 , G02B5/18 , G02B5/30 , G02B13/00 , G02B23/02 , G02B27/42 , G02B27/00 , G02B7/00 , G02B7/02 , G02B7/182 , G03H1/08
Abstract: Diffractive waveplate lenses, mirrors, devices, systems and methods for performing imaging over a broad spectral band in imaging systems, such as but not limited to astronomical imaging, surveillance imaging, and in communication systems, such as laser communication systems. Corrector mirrors are used with a flat diffractive wave diffractive waveplate lens so that chromatic aberrations of the diffractive waveplate lens are reduced with the imaging system.
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公开(公告)号：US11294240B2
公开(公告)日：2022-04-05
申请号：US16928526
申请日：2020-07-14
Inventor： Nelson V. Tabirian , Justin L. Sigley , Zhi J. Liao , David E. Roberts
IPC: G02F1/1337 , G02F1/13 , G02F1/35 , G02F1/13363 , G02F1/00 , G02F1/1333 , G02F1/1335
Abstract: Diffractive optical structures, lenses, waveplates, devices, systems and methods, which have the same effect on light regardless of temperature within an operating temperature range. Temperature-compensated switchable diffractive waveplate systems, in which the diffraction efficiency can be maximized for the operating wavelength and temperature by means of adjustment of the electric potential across the liquid crystal or other anisotropic material in the diffracting state of the diffractive state, based on prior measurements of diffraction efficiency as a function of wavelength and temperature. The switchable diffractive waveplates can be a switchable diffractive waveplate diffuser, a switchable cycloidal diffractive waveplate, and a switchable diffractive waveplate lens. An electronic controller can apply an electric potential to the switchable diffractive waveplate. Amplitudes of the electric potential can be determined from lookup tables such that diffraction efficiency at an operating wavelength and measured temperature is maximized. A communications channel can transfer the measured temperature from temperature measurement means to the electronic controller.
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公开(公告)号：US20170115435A1
公开(公告)日：2017-04-27
申请号：US15336336
申请日：2016-10-27
Inventor： Nelson V. Tabirian , Zhi J. Liao , David E. Roberts
CPC classification number: G02B5/1833 , G02B1/10 , G02B5/1842 , G02B5/3083 , G02B7/003 , G02B7/02 , G02B7/1822 , G02B13/0055 , G02B23/02 , G02B27/0012 , G02B27/0037 , G02B27/4211 , G02B27/4261 , G02B27/4288 , G03H2001/0816 , G03H2240/53
Abstract: Diffractive waveplate lenses, mirrors, devices, systems and methods for performing imaging over a broad spectral band in imaging systems, such as but not limited to astronomical imaging, surveillance imaging, and in communication systems, such as laser communication systems. Corrector mirrors are used with a flat diffractive wave diffractive waveplate lens so that chromatic aberrations of the diffractive waveplate lens are reduced with the imaging system.
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公开(公告)号：US20210041729A1
公开(公告)日：2021-02-11
申请号：US16928526
申请日：2020-07-14
Inventor： Nelson V. Tabirian , Justin L. Sigley , Zhi J. Liao , David E. Roberts
IPC: G02F1/1337 , G02F1/13
Abstract: Diffractive optical structures, lenses, waveplates, devices, systems and methods, which have the same effect on light regardless of temperature within an operating temperature range. Temperature-compensated switchable diffractive waveplate systems, in which the diffraction efficiency can be maximized for the operating wavelength and temperature by means of adjustment of the electric potential across the liquid crystal or other anisotropic material in the diffracting state of the diffractive state, based on prior measurements of diffraction efficiency as a function of wavelength and temperature. The switchable diffractive waveplates can be a switchable diffractive waveplate diffuser, a switchable cycloidal diffractive waveplate, and a switchable diffractive waveplate lens. An electronic controller can apply an electric potential to the switchable diffractive waveplate. Amplitudes of the electric potential can be determined from lookup tables such that diffraction efficiency at an operating wavelength and measured temperature is maximized. A communications channel can transfer the measured temperature from temperature measurement means to the electronic controller.
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