LED lamp with selectable color temperature output
US11395387B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | May 16, 2018 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | May 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light emitting diode (LED) lamp includes a primary LED grouping (210,310), a switchable LED grouping (215), and a conduction path selector (240,340) configured to select a conductive path that places the primary LED grouping in electrical series with at least a portion of the switchable LED grouping, or bypasses the switchable LED grouping. The primary LED grouping have a first color temperature rating, and each respective LED subgrouping have a respective color temperature different from the first color temperature. Selection of one or more LED subgrouping results in the LED lamp emitting different color temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.