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. 02, 2018
Filed:
Jan. 24, 2018
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Tohru Himeno, Osaka, JP;
Naoko Takei, Osaka, JP;
Abstract
Provided is a vehicle front lamp for use in a vehicle, including: a first white light source that emits first white light; a second white light source that emits second white light having a feeling of contrast index different from that of the first white light by at least 10; and a controller that controls light intensity of the first white light and light intensity of the second white light, in which chromaticity of the first white light and chromaticity of the second white light are each within a 5-step MacAdam ellipse, the first white light source and the second white light source are disposed in the vehicle front lamp so that the first white light and the second white light overlap each other on a certain illuminated surface, and the controller temporally changes a light intensity ratio between the first white light and the second white light.