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. 19, 2012
Filed:
Jan. 16, 2008
Applicants:
Graeme Hall, Leeds, GB;
Euan Morrison, Cambridge, GB;
Inventors:
Graeme Hall, Leeds, GB;
Euan Morrison, Cambridge, GB;
Assignee:
Brandon Medical Company Limited, Leeds, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to an illumination device, comprising a white LED, a red LED and a color filter. A hight color rendering index (CRI, Ra) and a high value of R9 (for strong red) can be obtained. One application is medical lighting, for example for surgical lights.