Invention Grant
- Patent Title: Small form-factor LED lamp with color-controlled dimming
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Application No.: US14813595Application Date: 2015-07-30
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Publication No.: US09909723B2Publication Date: 2018-03-06
- Inventor: Michael John Bergmann , Julio Garceran
- Applicant: Cree, Inc.
- Applicant Address: US NC Durham
- Assignee: Cree, Inc.
- Current Assignee: Cree, Inc.
- Current Assignee Address: US NC Durham
- Agency: Moore & Van Allen PLLC
- Agent Dennis J. Williamson
- Main IPC: F21K9/90
- IPC: F21K9/90 ; F21K9/232 ; F21K9/61 ; F21Y115/10 ; F21Y113/13

Abstract:
A small form factor LED lighting system provides for color-controlled dimming. Embodiments of the invention use one or more small-footprint LED(s) that can emit light of different correlated color temperatures (CCTs, colors or spectral outputs). The CCT of the fixture or bulb can change when dimmed by disproportionate adjustment of the driving power for each color. The small size and footprint of the LEDs enables use in decorative LED lamps, such as those designed to replace candelabra style incandescent bulbs. Various options can be used to tune the performance and lighting characteristics of a lamp according to embodiments of the invention, such as the use of differing LED device package optics, the use of reflective materials in and/or around LED device packages, and the use of a secondary optic to produce an omnidirectional light pattern.
Public/Granted literature
- US20170030529A1 SMALL FORM-FACTOR LED LAMP WITH COLOR-CONTROLLED DIMMING Public/Granted day:2017-02-02
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