Invention Grant
- Patent Title: Devices and methods for removing zeroth order leakage in beam steering devices
-
Application No.: US15347691Application Date: 2016-11-09
-
Publication No.: US10338451B2Publication Date: 2019-07-02
- Inventor: Jianru Shi , Mary Lou Jepsen
- Applicant: Facebook Technologies, LLC
- Applicant Address: US CA Menlo Park
- Assignee: Facebook Technologies, LLC
- Current Assignee: Facebook Technologies, LLC
- Current Assignee Address: US CA Menlo Park
- Agency: Morgan, Lewis & Bockius LLP
- Main IPC: G02F1/13
- IPC: G02F1/13 ; G02F1/29 ; G02B27/01 ; G02B27/00 ; G02B3/00 ; G06F3/01 ; G09G3/34 ; G06F3/0346 ; G02B26/08 ; G09G3/00 ; G09G3/36 ; G06F3/14

Abstract:
A beam steering device includes a first active deflector. The first active deflector includes a first substrate with one or more electrodes, a second substrate with one or more electrodes, and liquid crystals located between the first substrate and the second substrate. The second substrate is distinct from the first substrate. The beam steering device also includes a passive deflector positioned parallel to the first active deflector. The passive deflector includes a third substrate, a fourth substrate that is distinct from the third substrate, and liquid crystals located between the third substrate and the fourth substrate. A method for separating zeroth order leakage with the beam steering device is also disclosed.
Public/Granted literature
- US20170059960A1 Devices and Methods for Removing Zeroth Order Leakage in Beam Steering Devices Public/Granted day:2017-03-02
Information query