公开(公告)号：US10274805B2

公开(公告)日：2019-04-30

申请号：US15621553

申请日：2017-06-13

Applicant: Beam Engineering for Advanced Materials Co.

Inventor： Nelson V. Tabirian ,  David E. Roberts

IPC: G02C7/08 ,  G02F1/29 ,  G02C7/04 ,  A61F2/16

Abstract: Energized lens systems and methods of fabricating an energized lens system which can be switched from one polarization-independent focal length to another polarization-independent focal length. The energized lens system can include a 90 degree twisted nematic liquid crystal layer with curved boundaries, and with transparent conductive electrodes which allow the application of an electric field to switch the focal length of the twisted nematic liquid crystal layer. The focal length of the energized lens system can be independent of the polarization of light in both of its two states, and only one liquid crystal layer of the energized lens system needs to be switched in order for the focal length of the energized lens system to be switched.

公开(公告)号：US20180356704A1

公开(公告)日：2018-12-13

申请号：US15621553

申请日：2017-06-13

Applicant: Beam Engineering for Advanced Materials Co.

Inventor： Nelson V. Tabirian ,  David E. Roberts

IPC: G02F1/29 ,  G02C7/08 ,  G02C7/04 ,  A61F2/16

CPC classification number: G02F1/29 ,  A61F2/1627 ,  A61F2/1635 ,  G02C7/041 ,  G02C7/083 ,  G02F2202/40 ,  G02F2203/06

Abstract: Energized lens systems and methods of fabricating an energized lens system which can be switched from one polarization-independent focal length to another polarization-independent focal length. The energized lens system can include a 90 degree twisted nematic liquid crystal layer with curved boundaries, and with transparent conductive electrodes which allow the application of an electric field to switch the focal length of the twisted nematic liquid crystal layer. The focal length of the energized lens system can be independent of the polarization of light in both of its two states, and only one liquid crystal layer of the energized lens system needs to be switched in order for the focal length of the energized lens system to be switched.

公开(公告)号：US09976911B1

公开(公告)日：2018-05-22

申请号：US15196679

申请日：2016-06-29

Applicant: Beam Engineering for Advanced Materials Co.

Inventor： Nelson V. Tabirian ,  Zhi J. Liao

IPC: G01J9/00

CPC classification number: G01J9/00 ,  G01J1/0411 ,  G01J1/4257 ,  G01J2009/002

Abstract: Sensors, devices, apparatus, systems and methods for replacing microlens arrays with one or more switchable diffractive waveplate microlens arrays for providing measurements of wavefronts and intensity distribution in light beams with high spatial resolution with a single optical radiation sensor. The device acts like a conventional Shack-Hartmann wavefront sensor when the microlens array elements are in focusing state, and the device performs light beam intensity profile characterization acting as a beam profiler when the optical power of lens array elements is switched off.