HINGE MECHANISM FOR FLUID FILLED LENS ASSEMBLY Russian patent published in 2017 - IPC G02B3/14 

FIELD: optics.

SUBSTANCE: invention relates to liquid-filled lenses. Proposed lens assembly, filled with liquid, comprises a frame; liquid-filled lens arranged in frame; temple arm portion; a reservoir, located in a housing; tube for liquid passage connecting reservoir with liquid-filled lens; and temple arm base having a first end for connection with temple arm portion, and a second end for connection with frame in assembly, and first and second ends of base are configured to bend around rotation axis of hinge. Base is made with a passage, having a shape at which tube for liquid passage can pass from first end of base to its second end, size of said passage enables tube to bend without twisting when temple rotates between open position, wherein first end of base has a surface with projections and recesses for engagement with surface of temple portion. Entire hinge mechanism can be placed inside volume of temple portion and frame. In frame assembly can be used a spring having an end, which includes a surface with projections and recesses, in case when temple portion rotates, end deflects sideways to a small projection, force at end of bend accumulating energy which is released, when temple portion forces end to move from projection, wherein temple portion (900) then accelerates and turns into folded or unfolded position, and base includes a U-shaped bend to facilitate bending around rotation axis of hinge.

EFFECT: adjustment of optical force for compensating for change of natural depth of focus of eye, which depends on pupil size of wearer of glasses, and which, in turn, depends on ambient illumination level.

9 cl, 23 dwg