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:
Feb. 15, 2005
Filed:
Jun. 14, 2001
Robert J. Devoe, Oakdale, MN (US);
Catherine A. Leatherdale, St. Paul, MN (US);
Guoping Mao, Woodbury, MN (US);
Patrick R. Fleming, Lake Elmo, MN (US);
Harvey W. Kalweit, Burnsville, MN (US);
Robert J. DeVoe, Oakdale, MN (US);
Catherine A. Leatherdale, St. Paul, MN (US);
Guoping Mao, Woodbury, MN (US);
Patrick R. Fleming, Lake Elmo, MN (US);
Harvey W. Kalweit, Burnsville, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Method of fabricating an optical element. A photodefinable composition is provided that includes (i) a hydrophobic, photodefinable polymer, said photodefinable polymer having a glass transition temperature in the cured state of at least about 80° C.; and (ii) a multiphoton photoinitiator system comprising at least one multiphoton photosensitizer and preferably at least one phtoinitiator that is capable of being photosensitized by the photosensitizer. One or more portions of the composition are imagewise exposed to the electromagnetic energy under conditions effective to photodefinably form at least a portion of a three-dimensional optical element.