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:
Mar. 04, 2025
Filed:
Oct. 20, 2022
Nichia Corporation, Anan, JP;
NICHIA CORPORATION, Anan, JP;
Abstract
An illumination device includes a light-emitting device and a control device. The light-emitting device is configured to emit at least light of a first color temperature having a correlated color temperature in a range from 3500 K to 8000 K, the light having a melanopic ratio of a prescribed value within a variation range of the melanopic ratio in which a gap between a maximum value and a minimum value of the melanopic ratio at the first color temperature is 0.30 or more. The control device is configured to control the light emitted from the light-emitting device, within a predetermined amount of time, by varying the melanopic ratio of the light by 0.3 or more, and adjusting the correlated color temperature of the light in a range from 0 K to ±500 K with respect to the first color temperature.