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. 10, 2014
Filed:
Jun. 22, 2012
Yoko Noguchi, Yokosuka, JP;
Tomoko Ishiwata, Yokosuka, JP;
Kazunori Yashiro, Yokosuka, JP;
Masaru Inoue, Yokosuka, JP;
Makoto Kawagoe, Yokosuka, JP;
Fumie Iwata, Yokosuka, JP;
Hitoshi Kawano, Yokosuka, JP;
Shigehisa Kawatsuru, Yokosuka, JP;
Yoko Noguchi, Yokosuka, JP;
Tomoko Ishiwata, Yokosuka, JP;
Kazunori Yashiro, Yokosuka, JP;
Masaru Inoue, Yokosuka, JP;
Makoto Kawagoe, Yokosuka, JP;
Fumie Iwata, Yokosuka, JP;
Hitoshi Kawano, Yokosuka, JP;
Shigehisa Kawatsuru, Yokosuka, JP;
Toshiba Lighting & Technology Corporation, Kanagawa-Ken, JP;
Abstract
According to one embodiment, a luminaire is provided which can enhance the feeling of brightness of a space and can reduce glare. The luminaire includes an equipment mounted on a ceiling surface. The equipment includes a light source and a light control unit. When an amount of light emitted outside from the equipment is an equipment luminous flux, and a direction right under the equipment has a luminous intensity distribution angle of 0°, the light control unit controls to cause a luminous flux falling within a range of a luminous intensity distribution angle of 90° to 120° to be 20% or more of the equipment luminous flux and to cause a luminous flux falling within a range of a luminous intensity distribution angle of 60° to 90° to be 20% or less of the equipment luminous flux.