LIQUID MENISCUS LENSES INCLUDING DIELECTRIC COATING WITH VARIABLE THICKNESS Russian patent published in 2015 - IPC G02B3/14 G02C7/06 G02B26/08 

FIELD: physics, optics.

SUBSTANCE: optical lens comprises a front lens and a back lens placed in the immediate vicinity of the front lens such that the inner surfaces of the front and back lenses form a cavity in between. The cavity contains a volume of saline solution and oil which forms a meniscus in between. The wall of the meniscus is formed on the region of the inner surface of the front lens which borders the meniscus and through which the boundary of the meniscus passes. The wall of the meniscus contains an electrical insulator coating having a variable thickness around the wall of the meniscus. A first area of the wall of the meniscus has a first thickness of the electrical insulator coating and a second area of the wall of the meniscus has a second thickness of the electrical insulator coating. The first thickness of the electrical coating insulator is greater than the second thickness of the electrical coating insulator. Each of the first and second areas borders with the meniscus formed between the saline solution and oil.

EFFECT: correcting astigmatism by forming a meniscus with a toroidal surface.

34 cl, 10 dwg