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:
Jan. 22, 2008
Filed:
Dec. 30, 2004
Byung-soo Ko, Hwasung, KR;
Leland R. Whitney, St. Paul, MN (US);
Mark E. Gardiner, Santa Rosa, CA (US);
Dongwon Chae, Hwasung, KR;
Byung-Soo Ko, Hwasung, KR;
Leland R. Whitney, St. Paul, MN (US);
Mark E. Gardiner, Santa Rosa, CA (US);
Dongwon Chae, Hwasung, KR;
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Optical films are disclosed, which have a structured surface including a plurality of concave pyramid-shaped structures, each structure having a base including at least two first sides and at least two second sides. In addition, optical devices are disclosed that incorporate the optical films, for example, such that a first surface of the optical film is disposed to receive light from a light source and the structured surface faces away from the light source.