发明名称 |
Frequency modulated liquid crystal beamsteering device |
摘要 |
An electrical exciting circuit produces a plurality of oscillating electrical excitations, each at an independently controllable frequency. A set of drive electrodes are distributed in an array, and connected so that each receives a respective one of the excitations. A dual frequency liquid crystal (DFLC) material is arranged in the path of a coherent light beam and is disposed in proximity to the set of drive electrodes so as to receive electrical excitations. The DFLC has a dielectric coefficient which varies locally in relation to the frequency of the local electrical excitation received. The voltages and at least two frequencies of the excitations are controlled so as to produce a desired profile of the dielectric coefficient (for at least one polarization) and a corresponding optical phase delay profile for the coherent beam. Preferably, a novel reflective groundplane is included to improve optical reflective efficiency.
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申请公布号 |
US6456419(B1) |
申请公布日期 |
2002.09.24 |
申请号 |
US20000675300 |
申请日期 |
2000.09.29 |
申请人 |
INNOVATIVE TECHNOLOGY LICENSING, LLC |
发明人 |
WINKER BRUCE K.;ZHUANG ZHIMING |
分类号 |
G02F1/13;G02F1/1343;G02F1/139;G02F1/29;(IPC1-7):G02F1/01 |
主分类号 |
G02F1/13 |
代理机构 |
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主权项 |
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地址 |
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