FIELD: medicine.
SUBSTANCE: liquid lens assembly comprises front rigid lens, semiflexible inflatable membrane and layer of liquid between them. Front lens is configured to compensate astigmatism, arising in fluid lens assembly at swelling of membrane. Membrane has thickened circuits, wherein every said circuit is area of different thickness, and wherein at least one such circuit is located inside optical area of liquid lens assembly. In first version front lens is configured so, that it mainly suppresses asphericity of membrane at certain stages of membrane swelling inside full range of desirable optical power. In second version membrane comprises several restraining sections, each of which is thinner part of membrane, surrounded by thicker part.
EFFECT: possibility of correcting spherical errors and astigmatism errors due to use of complex-shape membrane.
19 cl, 12 dwg
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