Electrically variable focus polymer-stabilized liquid...

Details Electrically variable focus polymer-stabilized liquid... Electrically variable focus polymer-stabilized liquid...

2007-05-15

2007-05-15

Chowdhury, Tarifur R. (Department: 2871)

Liquid crystal cells, elements and systems

Liquid crystal optical element

Liquid crystal lenses other than for eyewear

C349S086000, C349S095000

Reexamination Certificate

active

10861480

ABSTRACT:
A variable focus liquid crystal lens includes a nematic liquid crystal/monomer mixture having a spatially inhomogenous polymer network structure, and an electrode for applying a substantially uniform voltage to the nematic liquid crystal/monomer mixture. The lens is created within a cell by applying a substantially uniform electric field to the nematic liquid crystal/monomer mixture within the cell, while simultaneously irradiating the nematic liquid crystal/monomer mixture using a laser beam having a shaped intensity distribution, so as to induce formation of a spatially inhomogenous polymer network structure within the cell.

REFERENCES:
patent: 5498450 (1996-03-01), Akashi et al.
patent: 5886760 (1999-03-01), Ueda et al.
patent: 5942157 (1999-08-01), Sutherland et al.
patent: 6815016 (2004-11-01), Kyu et al.
patent: 6864951 (2005-03-01), Ren et al.

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