Title:
METHOD AND APPARATUS FOR HORTICULTURAL LIGHTING WITH ENHANCED DIMMING AND OPTIMIZED EFFICIENCY
Document Type and Number:
WIPO Patent Application WO/2018/058153
Kind Code:
A3
Abstract:
A method and apparatus for a horticultural light for use in a horticultural facility that uses both continuous current control and discontinuous current control to select an intensity for each LED string in the horticultural light. Continuous current control eciis selected when the horticultural light is operating above a threshold intensity and discontinuous current control is selected when the horticultural light is operating below the threshold intensity for enhanced dimming fidelity. A CPU detects the number of LED strings present in the horticultural light and determines the optimal operating voltage for each detected LED string based upon the detected forward voltage of each detected LED string. Based upon the optimal operating voltage determined for each LED string, the CPU may additionally select an optimized current stabilization network for each detected LED string.
Inventors:
ADAMS STEPHEN (US)
RHODES JAMES (US)
WILKES ARTHUR (US)
RHODES JAMES (US)
WILKES ARTHUR (US)
Application Number:
PCT/US2017/063201
Publication Date:
May 11, 2018
Filing Date:
November 25, 2017
Export Citation:
Assignee:
ILLUM TECH LLC (US)
ADAMS STEPHEN P (US)
RHODES JAMES V (US)
WILKES ARTHUR A (US)
ADAMS STEPHEN P (US)
RHODES JAMES V (US)
WILKES ARTHUR A (US)
International Classes:
H01L25/075; A01G7/04; H01L37/02; H05B44/00
Foreign References:
| US20150319817A1 | 2015-11-05 | |||
| US20040066306A1 | 2004-04-08 | |||
| US20130127353A1 | 2013-05-23 |
Attorney, Agent or Firm:
WALLACE, Michael, T. (US)
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