Liquid crystal optical modulator and drive method

Details Liquid crystal optical modulator and drive method Liquid crystal optical modulator and drive method

2007-05-15

2007-05-15

Shankar, Vijay (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S087000, C345S094000, C345S208000, C345S209000

Reexamination Certificate

active

10784823

ABSTRACT:
A liquid crystal optical modulator is operated as a concave lens using a quadratic curve modulation area of a refractive index modulation area of a liquid crystal molecule layer, which is different from a conventional convex lens operation area, without changing the configuration of the liquid crystal optical modulator. In addition, the liquid crystal optical modulator is operated as a concave lens using a quadratic curve modulation area used by a conventional liquid crystal optical modulator as well as an area different from that area to enable the liquid crystal optical modulator to operate as a convex lens and as a concave lens. This makes it possible to perform the concave lens operation, to enlarge the variable focal range, and to form a micro-lens array of variable focal point type.

REFERENCES:
patent: 5982539 (1999-11-01), Shirasaki
patent: 6356578 (2002-03-01), Yin
patent: 6600582 (2003-07-01), Liu et al.
patent: 6735017 (2004-05-01), Acosta et al.

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