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:
Oct. 23, 2012
Filed:
Dec. 19, 2009
Toshiyuki Nakajima, Tokyo, JP;
Toshiyuki Nakajima, Tokyo, JP;
Stanley Electric Co., Ltd., Tokyo, JP;
Abstract
An LED device and an LED lighting apparatus using the same can include a casing including a cavity and at least one pair of LED chips including a first and second LED chips. The LED chips can be adjacently located in the cavity, and an encapsulating resin including a phosphor can be disposed in the cavity so as to encapsulate the LED chips. A light-emitting surface of the first LED chip can be covered with a transparent resin, and therefore color temperatures of light emitted from the first and second LED chips can be located on a substantially black body due to a difference between their distances to the encapsulating resin. Thus, the LED lighting apparatus using the LED device can selectively emit white light having a preferable color temperature that is close to a natural color between the color temperatures by adjusting current applied to the LED chips.