ApplicationNo. 05/847102 filed on 10/31/1977
US Classes:351/168, Multifocal351/161, Multifocal359/666With variable magnification
ExaminersPrimary: Corbin, John K.
Assistant: Sugarman, Scott J.
Attorney, Agent or Firm
International ClassesG02C 7/06 (20060101)
G02C 7/04 (20060101)
Foreign Application Priority Data1976-11-02 FR
AbstractAn optical lens for differential correction comprising two transparent walls defining an enclosed space having therein a quantity of a transparent liquid with a predetermined optical index; the walls are so formed as to provide at the optical center a capillary space into which the liquid is aspirated when the lens is tilted at a predetermined angle for changing the power of the lens.