公开(公告)号：US10185182B2

公开(公告)日：2019-01-22

申请号：US14194808

申请日：2014-03-02

Applicant: BEAM Engineering for Advanced Measurements Co.

Inventor： Nelson Tabirian

IPC: G02F1/1337 ,  G02B5/30

Abstract: Cycloidal boundary conditions for aligning liquid crystalline materials are obtained by mechanical rubbing of a polymer coating. The rubbing is performed by a rubbing head rotating around an axis perpendicular to the rubbing plane while the alignment polymer film is being translated across the rubbing film such as only a linear portion of the alignment film touches the rubbing film at any given time.

公开(公告)号：US10036886B2

公开(公告)日：2018-07-31

申请号：US15419558

申请日：2017-01-30

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: G02B5/18 ,  G02B26/08 ,  G02B27/09 ,  G02B27/42

CPC classification number: G02B26/0808 ,  G02B5/1828 ,  G02B5/1866 ,  G02B27/0944 ,  G02B27/4261 ,  G02B27/4272

Abstract: Pointing and positioning system of light beams and images including a plurality of cycloidal diffractive waveplates, each waveplate capable of deviating a generally broadband light beam over a predetermined angle. The lateral translation and deviation angles of the light beams are controlled by controlling the relative distance, rotational position, and the diffraction efficiency of at least one in the plurality of waveplates.

公开(公告)号：US09715048B2

公开(公告)日：2017-07-25

申请号：US14739240

申请日：2015-06-15

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: G02B5/18 ,  G02B27/44 ,  G02B27/42

CPC classification number: G02B5/1828 ,  G02B5/1866 ,  G02B27/4272 ,  G02B27/44

Abstract: Optical systems for controlling with propagation of light beams in lateral and angular space, and through optical apertures. The light beams include laser beams as well as beams with wide spectrum of wavelengths and large divergence angles. The optical systems are based on combination of diffractive waveplates with diffractive properties that can be controlled with the aid of external stimuli such as electrical fields, temperature, optical beams and mechanical means.

公开(公告)号：US20170115435A1

公开(公告)日：2017-04-27

申请号：US15336336

申请日：2016-10-27

Applicant: Beam Engineering for Advanced Measurements Co.

Inventor： Nelson V. Tabirian ,  Zhi J. Liao ,  David E. Roberts

IPC: G02B5/18 ,  G02B1/10 ,  G02B27/42 ,  G02B13/00 ,  G02B23/02 ,  G02B5/30

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.

公开(公告)号：US20160370599A1

公开(公告)日：2016-12-22

申请号：US15189551

申请日：2016-06-22

Applicant: Beam Engineering for Advanced Measurements Co.

Inventor： Nelson V. Tabirian ,  David E. Roberts

IPC: G02B27/42 ,  G02B23/06 ,  G02B5/30 ,  G02B5/18

CPC classification number: G02B27/4211 ,  G02B5/1814 ,  G02B5/1833 ,  G02B5/1876 ,  G02B5/1895 ,  G02B5/3083 ,  G02B23/06

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.

Abstract translation: 用于在应用中使用的衍射望远镜中的激光脉冲或其他电磁辐射脉冲的时间色散的反射镜，透镜，装置，系统和方法，所述衍射望远镜例如但不限于光学望远镜，发射器，接收器和用于激光通信的收发器， 成像。 衍射透镜和镜子允许生产大面积望远镜并减少或消除由这种望远镜记录的激光脉冲和其他电磁辐射脉冲的时间分散。 这可以通过利用高效薄膜衍射光学膜，特别是衍射波片，并且具有选择的形状的次级衍射镜来确保从平坦的初级聚光透镜或反射镜的传播时间与在 平坦的初级收集透镜或辐射入射的反射镜。