Variable focus lens by small changes of the equatorial lens diam

Details Variable focus lens by small changes of the equatorial lens diam Variable focus lens by small changes of the equatorial lens diam

1995-05-12

1998-06-30

Sugarman, Scott J.

Optical: systems and elements

Lens

Fluid

359676, G02B 106, G02B 314

Patent

active

057742740

ABSTRACT:
A variable focus lens is constructed by making small changes in the equatorial diameter of an elastically deformable lens. The lens may be deformed by radial tension exerted in a plane generally perpendicular to the optical axis. The radial tension may be exerted by radially acting mechanical apparatus or by means of rings embedded or attached at the equator of the lens, whose diameter can be altered by heating, or by imposition of electrical or magnetic fields.

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