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:
Jul. 01, 2014
Filed:
Apr. 24, 2013
Panasonic Corporation, Osaka, JP;
Ayako Tsukitani, Kyoto, JP;
Takashi Saito, Osaka, JP;
Akira Takashima, Hyoga, JP;
Kouichi Wada, Osaka, JP;
Yoshinori Karasawa, Osaka, JP;
Toshihide Mori, Osaka, JP;
Hiroshi Hamano, Hyogo, JM;
Kensuke Yamazoe, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A lighting device includes first and second light emission units. The first light emission unit emits light having a relatively low color temperature and a high feeling of contrast index. The second light emission unit emits light having a relatively high S/P ratio, which is the ratio of scotopic luminance to photopic luminance. The first light emission unit illuminates a region located at a vertical upper side of a region illuminated by the second light emission unit.