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:
Aug. 29, 2017
Filed:
Mar. 20, 2015
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Hiroshi Ohno, Kanagawa, JP;
Mitsuaki Kato, Kanagawa, JP;
Katsumi Hisano, Chiba, JP;
Yoshinori Honguh, Kanagawa, JP;
Masataka Shiratsuchi, Kanagawa, JP;
Yuichiro Yamamoto, Kanagawa, JP;
Hiromichi Hayashihara, Saitama, JP;
Masatoshi Hirono, Kanagawa, JP;
Takeshi Morino, Kanagawa, JP;
KABUSHIKI KAISHA TOSHIBA, , JP;
TOSHIBA MATERIALS CO., LTD., , JP;
Abstract
An LED lighting device of embodiment comprising an LED light source which generates an ultraviolet light or a visible light, an axisymmetric transparent member which is provided over the light source and which is transparent to visible light, and an axisymmetric light scattering member disposed in the transparent member apart from the light source. A distance of closest approach Lbetween the light source and the light scattering member, and an area C of a light emitting surface of the light source satisfy the settled relation. A length Lof the light scattering member, and an absorption coefficient μ (1/mm) of the light scattering member satisfy the settled relation. A diameter dof the bottom surface of the light scattering member, the distance of closest approach Land a refractive index n of the transparent member satisfy the settled relation.