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:
Sep. 02, 2014
Filed:
Mar. 11, 2011
Shuhei Matsuda, Yokosuka, JP;
Soichi Shibusawa, Yokosuka, JP;
Nobuhiko Betsuda, Yokosuka, JP;
Kiyoshi Nishimura, Yokosuka, JP;
Shuhei Matsuda, Yokosuka, JP;
Soichi Shibusawa, Yokosuka, JP;
Nobuhiko Betsuda, Yokosuka, JP;
Kiyoshi Nishimura, Yokosuka, JP;
Toshiba Lighting & Technology Corporation, Kanagawa-ken, JP;
Abstract
According to one embodiment, a light emitting device which is attached to an illumination apparatus and radiates light having a correlated color temperature of 2900 to 3600K is provided. The light emitting device includes a substrate, blue light emitting LED elements and red light emitting LED elements mounted on the substrate, and a wavelength converting unit. The red light emitting LED elements have a luminous intensity of 0.2 to 2.5 times as large as that of the blue light emitting LED elements at normal use temperature in a state where the light emitting device is attached to the illumination apparatus. The wavelength converting unit is excited by light emitted from the blue light emitting LED elements and converts the light to light having a peak wavelength within a range of 500 to 600 nm.