On-demand photoinitiated polymerization

US8933143B2 · kind B2 · utility

Assignee

• CALIFORNIA INSTITUTE OF TECHNOLOGY · US

Inventors

• Andrew J. Boydston · Middleton, US
• Robert H. Grubbs · La Cañada Flintridge, US
• Chris Daeffler · Pasadena, US
• Nebojsa Momcilovic · Vienna, US

Key dates

• Filing date: Nov 5, 2013
• Grant date: Jan 13, 2015
• Expiry date: Nov 5, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2333/00
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Compositions and methods for adjustable lenses are provided. In some embodiments, the lenses contain a lens matrix material, a masking compound, and a prepolymer. The lens matrix material provides structure to the lens. The masking compound is capable of blocking polymerization or crosslinking of the prepolymer, until photoisomerization of the compound is triggered, and the compound is converted from a first isomer to a second isomer having a different absorption profile. The prepolymer is a composition that can undergo a polymerization or crosslinking reaction upon photoinitiation to alter one or more of the properties of the lenses.