Back to results
US 6,619,799 B1Granted
Optical lens system with electro-active lens having alterably different focal lengths
AssigneeE-Vision, LLC
InventorsRonald D. Blum, Dwight P. Dustin
Life of this patent
Estimating the term…
Abstract
An optical lens system that may include a lens with a first focal length and an electro-active region coupled to the lens, where activating the electro-active region alters a portion of the system to a second focal length such that the system has two different focal lengths.
Claims6
An optical lens system comprising:
- a lens having a first focal length;
- and,
- an electro-active region coupled to the lens,
- the electro-active region, when activated, altering the focal length of a first portion of the lens system to a second focal length, the second focal length different from the first focal length, wherein the lens has two fixed focal lengths.
1 more element
An optical lens system for refracting light passing through a lens comprising:
- a lens having a first focal length;
- and,
- an electro-active region coupled to the lens,
- the electro-active region, when activated, altering the focal length of a first portion of the lens system above a 180 degree meridian of the lens to a second focal length, the second focal length different from the first focal length,
- the electro-active region positioned to refract less than all of the light passing through the lens when the lens system is in use,
- wherein the electro-active region is releasably attached to the lens.
3 more elements
An optical lens system for refracting light passing through a lens comprising:
- a lens having a first focal length;
- and,
- an electro-active region coupled to the lens,
- the electro-active region, when activated, altering the focal length of a first portion of the lens system above a 180 degree meridian of the lens to a second focal length, the second focal length different from the first focal length,
- the electro-active region positioned to refract less than all of the light passing through the lens when the lens system is in use,
- wherein the lens system includes a polymer gel and a liquid crystal.
3 more elements
An optical lens system for refracting light passing through a lens comprising:
- a lens having a first focal length;
- and,
- an electro-active region coupled to the lens,
- the electro-active region, when activated, altering the focal length of a first portion of the lens system above a 180 degree meridian of the lens to a second focal length, the second focal length different from the first focal length,
- the electro-active region positioned to refract less than all of the light passing through the lens when the lens system is in use,
- wherein the electro-active region includes a metallic layer.
3 more elements
An optical lens system for refracting light passing through a lens comprising:
- a lens having a first focal length;
- and,
- an electro-active region coupled to the lens,
- the electro-active region, when activated, altering the focal length of a first portion of the lens system above a 180 degree meridian of the lens to a second focal length, the second focal length different from the first focal length,
- the electro-active region positioned to refract less than all of the light passing through the lens when the lens system is in use,
- wherein the lens is supported by a phoropter,
- wherein the phoropter contains a plurality of fixed focal length lenses.
4 more elements
Dependencies are inferred from the claim text.