发明名称 |
Tunable nano-phase polymer dispersed liquid crystal filter |
摘要 |
A tunable filter in particular for use in the visible or near infrared wavelength region, comprising a nano dispersed composite material contained within a resonant cavity structure comprising dielectric mirrors (15, 16), where the material is polarizable by means of an applied electric field. In particular, the polarizable material may be a nano phase polymer dispersed liquid crystal (PDLC) material where the diameter of liquid crystal droplets (2) within the material (3) is less than 0.1 mum, and for use in the visible wavelength region is typically between 10 nm and 50 nm. The filter also comprises structure for applying a variable electric field across the faces of the material. The transmission-wavelength characteristic of the filter is such that maxima and minima are shifted in wavelength by varying the electric field.
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申请公布号 |
US6271899(B1) |
申请公布日期 |
2001.08.07 |
申请号 |
US19980171350 |
申请日期 |
1998.10.16 |
申请人 |
THE SECRETARY OF STATE FOR DEFENCE IN HER BRITTANIC MAJESTY'S GOVERNMENT OF THE UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND |
发明人 |
LEWIS KEITH L;MASON IAN R;SAGE IAN C;BLACKER RICHARD S |
分类号 |
G02F1/1334;G02F1/1335;G02F1/21;(IPC1-7):G02F1/133 |
主分类号 |
G02F1/1334 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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