Spectacle frame for multifocal lenses

G - Physics – 02 – C

Patent

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G02C 1/00 (2006.01) G02C 3/00 (2006.01) G02C 5/12 (2006.01) G02C 7/06 (2006.01)

Patent

CA 1179876

SPECTACLE FRAME FOR MULTIFOCAL LENSES Abstract of the Disclosure: A frame for multifocal spectacles in which a side piece is attached to each of a pair of lens rims through a hinge mechanism which permits downward rotation of said side piece relative to said rim through a prescribed angle, and a nosepad is mounted on each of the lens rims through a level adjusting mechanism by which the nosepad is vertically moved causing the level of said lens rims to be altered in correspondence to the change of inclination of said side piece. By means of the hinge mechanism, through a simple operation, each lens segment of the multifocal lens can be used at the optimum angle with respect to the line of vision, and by means of the level adjusting mechanism for moving the nosepad vertically, each lens segment is moved vertically to the level most suitable relative to the line of vision and at the same time neatness of appearance and decrease of fatigue are obtained whichever pair of lens segments is used.

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