System, apparatus, and method for reducing birefringence

• US 6,491,391 B1
• Filed: 06/23/2000
• Issued: 12/10/2002
• Est. Priority Date: 07/02/1999
• Status: Expired due to Term

• Current Assignee: e-vision Smart Optics, Inc. (New Smart Optics, Inc.)
• Original Assignee: e-Vision, LLC (New Smart Optics, Inc.)
• Inventors: Blum, Ronald D., Katzman, Dan, Katzman, Youval, Efron, Uzi, Grossinger, Israel, Dustin, Dwight P.
• Primary Examiner(s): Sugarman, Scott J.
• Application Number:
  US09/603,736
• Time in Patent Office: 900 Days
• Field of Search: 351/159, 359/245, 359/256, 359/265, 359/272, 359/273
• US Class Current: 351/159
• CPC Class Codes: A61K 2039/505 comprising antibodies
• CPC Class Codes: A61K 38/00 Medicinal preparations containing peptides peptides containing beta-lactam rings A61K31/00; cyclic dipeptides not having in their molecule any other peptide link than those which form their ring, e.g. piperazine-2,5-diones, A61K31/00; ergot alkaloids of the cyclic peptide type A61K31/48; containing macromolecular compounds having statistically distributed amino acid units A61K31/74; medicinal preparations containing antigens or antibodies A61K39/00; medicinal preparations characterised by the non-active ingredients, e.g. peptides as drug carriers, A61K47/00
• CPC Class Codes: C07K 14/5443 IL-15
• CPC Class Codes: C07K 16/244 Interleukins [IL]
• CPC Class Codes: C07K 16/2866 against receptors for cytokines, lymphokines, interferons
• CPC Class Codes: C07K 2319/00 Fusion polypeptide
• CPC Class Codes: G02C 7/08 Auxiliary lenses; Arrangements for varying focal length
• CPC Class Codes: G02C 7/083 Electrooptic lenses
• CPC Class Codes: G02C 7/101 having an electro-optical light valve electro-optical elements per se G02F

Abstract

An electro-active spectacle lens is disclosed. The disclosed lens includes a first lens optic. The disclosed lens also includes a first electro-active zone positioned in a cooperative relationship with the first lens optic. In certain embodiments, the electro-active lens includes a range finder positioned in a cooperative relationship with the electro-active lens.

Claims

1. An electro-active lens comprising:

a first electro-active layer; and

a second electro-active layer, the first electro-active layer and the second electro-active layer being in optical communication with each other wherein, in an unactivated state, molecules of the first electro-active layer are aligned orthogonal to molecules of the second electro-active layer to reduce birefringence.

2. The lens of claim 1, wherein the second electro-active layer is stacked upon the first electro-active layer.

3. An electro-active lens comprising:

a first electro-active layer;

a second electro-active layer, the first electro-active layer and the second electro-active layer being in optical communication with each other wherein molecules of the first electro-active layer are aligned orthogonal to molecules of the second electro-active layer to reduce birefringence; and

a double-sided plate with diffraction patterns etched on both sides of the plate, the plate in optical communication with the first electro-active layer and the second electro-active layer.

4. The lens of claim 3, wherein the first electro-active layer is placed on one side of the plate and the second electro-active layer is placed on the other side of the plate.

5. A method for reducing birefringence in a lens, comprising:

providing a first electro-active layer of the lens;

providing a second electro-active layer of the lens; and

aligning, in an unactivated state, molecules of the first electro-active layer orthogonal to molecules of the second electro-active layer.

6. The method of claim 5, further comprising:

stacking the second electro-active layer upon the first electro-active layer.

7. A method for reducing birefringence in a lens, comprising:

providing a first electro-active layer of the lens;

providing a second electro-active layer of the lens;

providing a double-sided plate;

aligning molecules of the first electro-active layer orthogonal to molecules of the second electro-active layer; and

placing the first electro-active layer on one side of the double-sided plate and the second electro-active layer on the other side of the plate, the plate having diffraction patterns on both sides of the plate.

8. A system, comprising:

a first electro-active layer;

a second electro-active layer, wherein, in an unactivated state, molecules of the first electro-active layer are aligned orthogonal to molecules of the second electro-active layer to reduce birefringence; and

an electro-active lens controller in communication with the first and second electro-active layers.

9. The system of claim 8, wherein the second electro-active layer is stacked upon the first electro-active layer.

10. The system of claim 8, further comprising:

a power source configured to provide power to the controller,

wherein the first and second electro-active layers are configured to receive power from the power source.

11. A system, comprising:

a first electro-active layer;

a second electro-active layer, wherein molecules of the first electro-active layer are aligned orthogonal to molecules of the second electro-active layer to reduce birefringence;

an electro-active lens controller in communication with the first and second electro-active layers; and

a double-sided plate with diffraction patterns etched on both sides of the plate, the plate in optical communication with the first electro-active layer and the second electro-active layer.

12. The system of claim 11, wherein the first electro-active layer is placed on one side of the plate and the second electro-active layer is placed on the other side of the plate.