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

Claim 31:
32. A composition for light filtering, the composition comprising:
a plurality of metal nanoparticles, at least a portion of the plurality of metal nanoparticles having an anisotropic shape;
a stabilizing mechanism disposed to selectively couple with the at least a portion of the plurality of metal nanoparticles, the stabilizing mechanism comprise a molecular weight of 10 kDa poly(vinyl pyrrolidone), or from 55 kDa to 1300 kDa poly(vinyl pyrrolidone);
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.