Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses
Patent
1994-12-21
1996-06-11
Sikes, William L.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
351158, G02C 1300
Patent
active
055260675
ABSTRACT:
Variable power eyeglasses of many shapes can be manufactured having a frame, a pair of lens assemblies and a linear actuation mechanism. Each lens assembly includes: a rigid substrate; a membrane support spaced from the rigid substrate; a flexible seal extending between the rigid substrate and the membrane support, where the flexible seal acts as a hinge at a first section and acts as a spring by allowing relative motion between the rigid substrate and the membrane support at a second section; a transparent elastomeric membrane sealed around a periphery to the membrane support; and a transparent liquid filling the space between the rigid substrate and the membrane forming a liquid lens. The linear actuation mechanism causes relative motion between the membrane and the rigid substrate so that both optical and prismatic power of the liquid lens changes by varying a force applied to the flexible sealing means at the second section. The linear actuation mechanism is positioned within a plane of the lens assemblies and includes: a pair of sliders connected via a wire passing through a tube mounted onto the frame; a pair of cams with one of the cams attached to each end of the pair of sliders; and a pair of cam followers responsive to the cams causing relative motion in response to movement of the sliders.
REFERENCES:
patent: 1269422 (1918-06-01), Gordon
patent: 2576581 (1951-11-01), Edwards
patent: 3598479 (1971-08-01), Wright
patent: 4181408 (1980-01-01), Senders
patent: 4261655 (1981-04-01), Honigsbaum
patent: 4444471 (1984-04-01), Ford, Jr. et al.
patent: 4834512 (1989-05-01), Austin
patent: 4871237 (1989-10-01), Anzai et al.
patent: 4890903 (1990-01-01), Treisman et al.
patent: 4892396 (1990-01-01), Kushibiki et al.
patent: 4913536 (1990-04-01), Barnea
patent: 4989958 (1991-02-01), Hamada et al.
patent: 5124734 (1992-06-01), Barnea
patent: 5138494 (1992-08-01), Kurtin
patent: 5229885 (1993-07-01), Quaglia
patent: 5371629 (1994-12-01), Kurtin et al.
Cronin David V.
Williamson Donald
Dudek James A.
Polaroid Corporation
Sabourin Robert A.
Sikes William L.
LandOfFree
Actuation mechanism for variable focal length eyeglasses does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Actuation mechanism for variable focal length eyeglasses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Actuation mechanism for variable focal length eyeglasses will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-356081