-
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.
-
公开(公告)号：US11119257B2
公开(公告)日：2021-09-14
申请号：US16213467
申请日：2018-12-07
Applicant: Beam Engineering for Advanced Measurements Co. , U.S. Government as Represented by the Secretary of the Army
Inventor： Nelson V. Tabirian , Svetlana Serak , David E. Roberts , Diane Steeves , Brian Kimball
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.
-
公开(公告)号：US10557977B1
公开(公告)日：2020-02-11
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: G02B6/00 , G02B6/12 , G02B6/32 , G02B6/26 , G02B6/30 , G02B6/10 , G02B5/18 , A61F2/16 , G02B3/00 , G02B3/10 , G02B5/00 , G02B5/30 , G02B6/024 , G02B6/35 , G02B27/42 , G02C7/02 , G02C7/06 , G02C7/08 , G02C7/12 , G02C7/10
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.
-
公开(公告)号：US10191296B1
公开(公告)日：2019-01-29
申请号：US15199098
申请日：2016-06-30
Inventor： Nelson V. Tabirian , David E. Roberts
Abstract: Devices, apparatus, systems and methods for making and using laser pointers and laser illuminators with reduced risk of optical sensor damage such as eye injuries due to laser radiation from the pointer or illuminator, while scattered beams from the laser pointer or laser illuminator are visible to the optical sensor.
-
公开(公告)号：US09617205B2
公开(公告)日：2017-04-11
申请号：US14810589
申请日：2015-07-28
Applicant: The United States of America as Represented by the Secretary of the Army , Beam Engineering for Advanced Measurements Co.
Inventor： Nelson V. Tabirian , Sarik R. Nersisyan , Brian R. Kimball , Diane M. Steeves , Rafael O Vergara
IPC: B29D11/00 , G02F1/1337 , C07C245/08 , C09B33/044 , C09K19/56 , C09K19/60
CPC classification number: C07C245/08 , B29D11/00788 , C09B33/044 , C09K19/56 , C09K19/601 , C09K2219/03 , G02F1/133711 , G02F1/133788
Abstract: A method of fabricating a liquid crystal polymer film includes providing a support substrate having a surface having a shape arranged to define a form of a liquid crystal polymer film to be fabricated; applying a layer of a photoaligning material over the surface of the support substrate, the photoaligning material having an absorption band; exposing the layer of photoaligning material to a light having a linear polarization and the light comprising a wavelength within the absorption band to convert the layer of photoaligning material into a layer of photoaligned material; applying a layer of a polymerizable liquid crystal over the layer of photoaligned material; performing photopolymerization of the layer of polymerizable liquid crystal to form a liquid crystal polymer film; applying a solvent to the layer of photoaligned material, the solvent formulated to dissolve the photoaligned material to thereby release the liquid crystal polymer film from the support substrate; and removing the liquid crystal polymer film from the support substrate.
-
Patent Agency Ranking
26.发明申请Methods and Apparatus for Human Vision Correction Using Diffractive Waveplate Lenses 有权使用衍射波片镜头进行人体视觉矫正的方法和装置公开(公告)号：US20150301356A1
公开(公告)日：2015-10-22
申请号：US14688540
申请日：2015-04-16
Inventor： Nelson V. Tabirian , Anna Tabirian , David E. Roberts
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.
Abstract translation: 镜片，装置，装置，系统，制造和制造用于矫正人类视觉的眼科镜片装置的方法。 该眼用透镜装置包括至少一个衍射波片涂层，其具有旨在校正各个患者视力的光轴取向图案。 包括衍射波片涂覆在内的眼科镜片装置还可以通过介电材料的弯曲表面的光的折射来提供所需视力校正的一部分。
-
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.
-
28.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.
-
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.
-
公开(公告)号：US09658512B2
公开(公告)日：2017-05-23
申请号：US14165615
申请日：2014-01-28
Applicant: The United States of America as Represented by the Secretary of the Army , Beam Engineering for Advanced Measurements Co.
Inventor： Nelson V. Tabirian , Sarik R. Nersisyan , Brian R. Kimball , Diane M. Steeves
IPC: G02F1/29 , G02F1/1343
CPC classification number: G02F1/292 , G02F1/134363 , Y10T29/49155
Abstract: A cycloidal diffractive waveplate (50) comprising first and second substrate layers (52, 54), a liquid crystal layer (60C, 60H) provided between the first and second substrate layers, and transparent positive electrodes (56) and transparent negative electrodes (58) provided on the first substrate layer. The liquid crystal layer has a diffractive state (60C) in which the optical axes of the liquid crystal molecules are periodically rotated across a plane of the waveplate and a non-diffractive state (60H) in which the optical axes of the liquid crystal molecules are all orientated in the same direction in the plane of the waveplate. The electrodes (56, 58) are arranged in an alternating series, such that when an electric voltage is applied to the electrodes an electric field is produced in the plane of the waveplate and the liquid crystal layer is switched from the diffractive state to the non-diffractive state. A method of manufacturing the cycloidal diffractive waveplate is also provided.
-
-
-
-
-
-
-
-
-
Search Results
31
records
(took 0.023 seconds)
