The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2015
Filed:
Mar. 04, 2009
Thomas Smith, Penfield, NY (US);
Wayne H. Knox, Pittsford, NY (US);
LI Ding, Rochester, NY (US);
Dharmendra Jani, Fairport, NY (US);
Jeffrey G. Linhardt, Fairport, NY (US);
Thomas Smith, Penfield, NY (US);
Wayne H. Knox, Pittsford, NY (US);
Li Ding, Rochester, NY (US);
Dharmendra Jani, Fairport, NY (US);
Jeffrey G. Linhardt, Fairport, NY (US);
University of Rochester, Rochester, NY (US);
Rochester Institute of Technology, Rochester, NY (US);
Abstract
A method for modifying the refractive index of an optical, hydrogel polymeric material. The method comprises irradiating predetermined regions of an optical, polymeric material with a laser to form refractive structures. To facilitate the formation of the refractive structures the optical, hydrogel polymeric material comprises a photosensitizer. The presence of the photosensitizer permits one to set a scan rate to a value that is at least fifty times greater than a scan rate without the photosensitizer in the material, yet provides similar refractive structures in terms of the observed change in refractive index. Alternatively, the photosensitizer in the polymeric material permits one to set an average laser power to a value that is at least two times less than an average laser power without the photosensitizer in the material, yet provide similar refractive structures.