Patent ID: 11971518
Assignee: JOHNSON & JOHNSON VISION CARE, INC.
Field: Optics (Instruments)
Classification: CPC G  C | IPC C  G

Claim 0:
1. A composition for light filtering, the composition comprising:
a base material;
a plurality of gold nanoparticles dispersed in the base material, at least a portion of the plurality of gold nanoparticles having an anisotropic shape;
a stabilizing mechanism disposed to selectively couple with the at least a portion of the plurality of gold nanoparticles to enhance stability of the at least the portion of the plurality of gold nanoparticles in the base material, the stabilizing mechanism comprises a molecular weight of 10 kDa poly(vinyl pyrrolidone), or from 55 kDa to 1300 kDa poly(vinyl pyrrolidone);
wherein the base material comprises a biomaterial, a biomaterial matrix, hydrogel;
wherein the composition exhibits a peak light filtering value in the range of about 600 nm to about 850 nm, and
wherein the anisotropic shape is tuned such that the composition exhibits a filtering spectrum having a full-width at half maximum of about 54 nm-58 nm.