Liquid-crystal lens and method and apparatus for driving the...

Details Liquid-crystal lens and method and apparatus for driving the... Liquid-crystal lens and method and apparatus for driving the...

2005-04-19

2005-04-19

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

Fluid

C359S742000, C359S743000, C359S565000, C359S571000, C359S666000

Reexamination Certificate

active

06882482

ABSTRACT:
A liquid-crystal lens includes a hologram liquid-crystal element having a liquid crystal which provides a light beam transmitting therethrough with a phase change so as to have a wavefront of a blaze-hologram shape; and a segment liquid-crystal element including a first electrode divided correspondingly to the blaze-hologram shape, a second electrode opposed to the first electrode and a liquid crystal for providing the transmitting light beam with a phase change by voltage application to the first and second electrodes, the segment liquid-crystal element being arranged coaxial to the hologram liquid-crystal element.

REFERENCES:
patent: 6288846 (2001-09-01), Stoner, Jr.
patent: 5-034656 (1993-02-01), None

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