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:
Jul. 25, 2017
Energizer Brands, Llc, St. Louis, MO (US);
Michael J. Brandon, II, North Ridgefield, OH (US);
Energizer Brands, LLC, St. Louis, MO (US);
Abstract
A portable lighting device such as a flashlight, headlight, or electric lantern comprises an onboard power supply (e.g., one or more batteries), a light source (e.g., one or more LEDs), and an onboard controller for regulating the light emitted by the portable lighting device. The onboard controller is in communication with one or more sensors configured to monitor component characteristics, such as a light source temperature and/or a power supply voltage. Based at least in part on the monitored characteristics, the controller is configured to generate a start-up ramp profile to gradually increase the brightness level emitted by the light source according to a defined brightness rate of change. After a power switch for the portable lighting device is activated, the controller initializes the start-up ramp profile to gradually increase the brightness emitted from the portable lighting device to a steady-state brightness level.