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:
Dec. 29, 2015
Filed:
Jul. 30, 2010
Quan Zhang, Shenzhen, CN;
Yi LI, Shenzhen, CN;
Quan Zhang, Shenzhen, CN;
Yi Li, Shenzhen, CN;
APPOTRONICS LTD., Shenzhen, CN;
Abstract
A LED illumination device for stage lighting includes LED arrays () packaged on a heat dissipating substrate and including a plurality of LED chips (), a light combining device () for combining the light emitted by respective LED arrays (), and a focusing lens () for focusing the combined light to a light output port. The illumination device further includes a fly-eye lens pair () disposed between the light combining device () and the focusing lens (). The fly-eye lens pair () comprises two fly-eye lenses, each being formed of a plurality of lens units () tightly connected together and having the same lens surface curvature. A method for improving color uniformity of the device is also provided.