Adjustable focus lens system

Details Adjustable focus lens system Adjustable focus lens system

2008-05-13

2008-05-13

Harrington, Alicia M (Department: 2873)

Optical: systems and elements

Lens

With support

C351S041000

Reexamination Certificate

active

07372646

ABSTRACT:
An adjustable focus lens system with at least two lens units and a mechanism to adjust the position of at least one of the two lens units relative to the other in a direction generally perpendicular to a viewing direction. The first of the two lens units has a specially designed surface and the second of the two lens units has a surface that is substantially complementary to the surface of the first lens unit. In preferred embodiments a first adjustable focus lens system with two lens units is mounted in a frame along with a second similar adjustable focus lens system to provide a pair of eyeglasses with adjustable focus.

REFERENCES:
patent: 1948636 (1934-02-01), Tillyer
patent: 3507565 (1970-04-01), Alvarez
patent: 3617116 (1971-11-01), Jones
patent: 5076665 (1991-12-01), Petersen
patent: 5347400 (1994-09-01), Hunter
patent: 6208464 (2001-03-01), Tsukamoto et al.

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