Field-customizable variable focal length lens

Details Field-customizable variable focal length lens Field-customizable variable focal length lens

1998-05-26

1999-09-21

Dang, Hung Xuan

Optical: systems and elements

Lens

Fluid

359365, 359832, G02B 106

Patent

active

059561831

ABSTRACT:
A liquid-filled variable focus lens unit, particularly useful in eyeglasses, comprised of a generic variable focus capsule to which a fixed-focus rigid lens is attached. The capsule has a preestablished optical power at its distance setting, which may be the same for all capsules of a given style, and a variable optical addition. The rigid lens, which is attached to a completed capsule, includes a surface having a shape related to the visual acuity of an intended user so that the combination of a generic capsule and the rigid lens results in a lens unit having a net optical power which matches the refractive prescription of the intended user at all distances.

REFERENCES:
patent: 60109 (1866-11-01), Woodward
patent: 504890 (1893-09-01), Ohmart
patent: 509379 (1893-09-01), Ingram
patent: 1269422 (1918-06-01), Gordon
patent: 1515389 (1924-11-01), Hopkins
patent: 2576581 (1951-11-01), Edwards
patent: 3161718 (1964-12-01), De Luca
patent: 3598479 (1971-08-01), Wright
patent: 4181408 (1980-01-01), Senders
patent: 4261655 (1981-04-01), Honigsbaum
patent: 4913536 (1990-04-01), Barnea
patent: 5124734 (1992-06-01), Barnea
patent: 5138494 (1992-08-01), Kurtin
patent: 5182585 (1993-01-01), Stoner
patent: 5371629 (1994-12-01), Kurtin et al.
patent: 5436766 (1995-07-01), Leary
patent: 5526067 (1996-06-01), Cronin
patent: 5668620 (1997-09-01), Kurtin et al.

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