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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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公开(公告)号：US10666916B1
公开(公告)日：2020-05-26
申请号：US16287436
申请日：2019-02-27
Inventor： Nelson V. Tabirian , David E. Roberts
IPC: H04N9/31 , G02B27/28 , G02B5/20 , H04B10/532
Abstract: Modulated circular polarization viewing systems and methods that cause temporal modulation of color, brightness, or both, of objects treated with materials having differential polarization reflectance.
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公开(公告)号：US10423045B2
公开(公告)日：2019-09-24
申请号：US15350856
申请日：2016-11-14
Inventor： David E. Roberts , Nelson V. Tabirian
Abstract: Optical beam shaping systems and methods can include an illumination source and a diffractive waveplate diffuser. The diffractive waveplate diffuser includes a layer of patterned optically anisotropic material. In one embodiment, the layer of patterned optically anisotropic material is fabricated in the form of patterned, optically anisotropic liquid crystal polymer. In another embodiment, the layer of patterned optically anisotropic material is a layer of liquid crystal, the diffractive waveplate diffuser also includes two alignment layers and two transparent conductive coatings, and the properties of the liquid crystal layer are controlled by the application of an electric potential between the two transparent conductive coatings. A method is provided for designing the alignment pattern of the layer of optically anisotropic material.
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公开(公告)号：US10197715B1
公开(公告)日：2019-02-05
申请号：US15198026
申请日：2016-06-30
Inventor： Nelson V. Tabirian , Svetlana V. Serak , Diane M. Steeves , Brian R. Kimball , David E. Roberts
Abstract: Methods of fabricating optical lenses and mirrors, systems and composite structures based on diffractive waveplates, and fields of application of said lenses and mirrors that include imaging systems, astronomy, displays, polarizers, optical communication and other areas of laser and photonics technology. Diffractive lenses and mirrors of shorter focal length and larger size, with more closely spaced grating lines, and with more exacting tolerances on the optical characteristics, can be fabricated than could be fabricated by previous methods.
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公开(公告)号：US09753193B2
公开(公告)日：2017-09-05
申请号：US14688540
申请日：2015-04-16
Inventor： Nelson V. Tabirian , Anna Tabirian , David E. Roberts
IPC: A61F2/16 , G02C7/02 , G02B5/18 , G02C7/06 , G02C7/12 , G02C7/08 , G02B5/30 , G02B27/42 , G02B5/00 , G02B6/024 , G02B6/35 , G02B3/00 , G02B3/10 , G02C7/10
CPC classification number: G02B5/1833 , A61F2/1618 , A61F2/1654 , G02B3/0081 , G02B3/10 , G02B5/001 , G02B5/1828 , G02B5/3083 , G02B6/024 , G02B6/3534 , G02B6/3592 , G02B27/4205 , G02B27/4211 , G02B27/4216 , G02B27/4261 , G02C7/022 , G02C7/061 , G02C7/086 , G02C7/10 , G02C7/12 , G02C2202/16 , G02C2202/20
Abstract: Lenses, devices, apparatus, systems, methods of manufacturing and fabricating an ophthalmic lens device for correction of human vision. The ophthalmic lens device includes at least one diffractive waveplate coating with an optical axis orientation pattern designed to correct the vision of individual patients. The ophthalmic lens device including diffractive waveplate coating may also provide a portion of the required vision correction by means of refraction of light by curved surfaces of a dielectric material.
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Patent Agency Ranking
公开(公告)号：US11366254B2
公开(公告)日：2022-06-21
申请号：US16746366
申请日：2020-01-17
Inventor： Nelson Tabirian , David E. Roberts , Sarik Nersisyan , Olena Uskova , Anna Tabirian
IPC: G02B6/00 , G02B6/12 , G02B6/32 , G02B6/028 , G02B6/10 , G02B5/18 , G02B27/42 , G02B3/00 , G02B6/35 , G02B6/024 , G02B5/00 , G02B5/30 , A61F2/16 , G02C7/08 , G02B3/10 , G02C7/12 , G02C7/06 , G02C7/02 , G02C7/10
Abstract: Optical beam steering and focusing systems, devices, and methods that utilize diffractive waveplates are improved to produce high efficiency at large beam deflection angles, particularly around normal incidence, by diffractive waveplate architectures comprising a special combination of liquid crystal polymer diffractive waveplate both layers with internal twisted structure and at a layer with uniform structure.
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公开(公告)号：US20200025986A1
公开(公告)日：2020-01-23
申请号：US16220995
申请日：2018-12-14
Applicant: Beam Engineering for Advanced Measurements Co. , U.S. Government as Represented by the Secretary of the Army
Inventor： Nelson V. Tabirian , Svetlana Serak , Olena Uskova , David E. Roberts , Anna Tabirian , Diane Steeves , Brian Kimball
IPC: G02B5/18 , G02C7/02 , G02C7/06 , G02C7/12 , A61F2/16 , G02B3/10 , G02C7/08 , G02B5/30 , G02B27/42 , G02B5/00 , G02B6/024 , G02B6/35 , G02B3/00
Abstract: Methods, systems and devices for diffractive waveplate lens and mirror systems allowing electronically focusing light at different focal planes. The system can be incorporated into a variety of optical schemes for providing electrical control of transmission. In another embodiment, the system comprises diffractive waveplates of different functionality to provide a system for controlling not only focusing but other propagation properties of light including direction, phase profile, and intensity distribution.
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8.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：US10330947B2
公开(公告)日：2019-06-25
申请号：US15189551
申请日：2016-06-22
Inventor： Nelson V. Tabirian , David E. Roberts
Abstract: Mirrors, lenses, devices, apparatus, systems and methods for correcting temporal dispersion of laser pulses or other pulses of electromagnetic radiation in diffractive telescopes used in applications, such as but not limited to optical telescopes, transmitters, receivers, and transceivers for laser communication and imaging. Diffractive lenses and mirrors allow for producing large area telescopes and reducing or eliminating temporal dispersion of laser pulses and other pulses of electromagnetic radiation recorded by such telescopes. This can be achieved by utilizing high efficiency thin film diffractive optical films, particularly, diffractive waveplates, and having a secondary diffractive mirror of a shape selected to assure that the propagation time from the flat primary collecting lens or mirror is independent of the position on the flat primary collecting lens or mirror at which the radiation impinges.
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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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