System and method for producing high quality temperature adjustable white light
OwnerMorten Hjerdeinventor
Life of this patent
Estimating the term…
Abstract
Systems and methods of producing high quality temperature adjustable white light using six different colored LEDs is disclosed. In one embodiment the six LEDs are a Red (630 nm), an Amber (589 nm), a lime LED (568 nm), a green LED (540 nm) a cyan LED (505 nm) and a blue (430 nm). Optimal relative intensities of the RGBACL LED are calculated by solving a matrix relating the CIE tristimulus values Alternatively, optimum relative intensities may be calculated for two light sources lying on a line of constant CCT value, but on opposite sides of the Planckian locus. These relative intensities for each of the light sources are then retained and adjusted as a group to obtain a single white light source of the requested CCT value lying on the Planckian locus.
Claims18
A method of producing temperature adjustable white light, comprising:
- providing a six-color LED light engine having a digital processor, a power source, and one or more groups of six LED's each LED having a different peak color and, wherein, said digital processor is programmed to perform the functions of:
- receiving a request for a Correlated Color Temperature (CCT) value;
- automatically calculating optimal relative intensities of each of said six LEDs to produce said CCT and provide a satisfactory color quality metric;
- automatically calculating an amount of power to supply to each of said six LEDs to obtain said optimal relative intensities;
- and
- providing said amount of power from said power source to said groups of six LEDs, thereby obtaining a white light having said CCT value with satisfactory color quality metrics.
A temperature adjustable white light, comprising:
- a six-color LED light engine having a digital processor, a power source, and one or more groups of six LED's each LED having a different peak color and, wherein, said digital processor is programmed to perform the functions of:
- receiving a request for a Correlated Color Temperature (CCT) value;
- automatically calculating optimal relative intensities of each of said six LEDs to produce said CCT and provide satisfactory color quality metrics;
- automatically calculating an amount of power to supply to each of said six LEDs to obtain said optimal relative intensities;
- and
- providing said amount of power from said power source to said groups of six LEDs, thereby obtaining a white light having said CCT value with satisfactory color quality metrics.
Dependencies are inferred from the claim text.