Light engine for and method of simulating a flame
DCFirst Claim
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1. A lighting device, comprising:
- a substrate having a longitudinal axis and an operating orientation, first and second parts of the substrate being on opposite sides of a plane containing the longitudinal axis;
a plurality of discrete light emission points (DLEPs) positioned along the substrate;
a first subset of the DLEPs being positioned along the first part of the substrate;
a second subset of the DLEPs being positioned along the second part of the substrate;
each of the plurality of DLEPs respectively being in one and only one of the first subset or the second subset;
a lowermost grouping of the DLEPs containing some of the DLEPs of the first subset and some of the DLEPs of the second subset;
a middle grouping of the DLEPs containing some of the DLEPs of the first subset and some of the DLEPs of the second subset;
the middle grouping having more of the plurality of DLEPs than are in the lowermost grouping;
an uppermost grouping of the DLEPs containing some of the DLEPs of the first subset and some of the DLEPs of the second subset;
each of the plurality of DLEPs respectively being in one and only one of the lowermost grouping, the middle grouping, or the uppermost grouping;
the DLEPs in the middle grouping being above the DLEPs in the lowermost grouping when the substrate is at the operating orientation;
the DLEPs in the uppermost grouping being above the DLEPs in the middle grouping when the substrate is at the operating orientation;
at least one of the DLEPs in the first subset having a light emission axis that is offset angularly away from a light emission axis of at least one of the DLEPs in the second subset; and
a controller to cause the plurality of DLEPs to simulate a flame, wherein the controller;
actuates at least some of the DLEPs in the lowermost grouping to simulate combustion at a bottom of a flame;
sequentially actuates at least some of the DLEPs in the middle grouping to simulate a rise in flame height; and
actuates at least some of the DLEPs in the uppermost grouping to flicker to simulate a flame tip.
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Abstract
An apparatus, system, and method for lighting effects, including simulating a flame. A three dimensional carrier includes an array of a plurality of light sources distributed on it. A control circuit coordinates on/off of the light sources in a manner to simulate a jumping flame. In one embodiment, the three dimensional carrier and LEDs are encapsulated in an at least partially light transmissive cover. This light modular engine includes a control circuit and an interface to electrical power. The system can include the light engine in a light fixture such as an architectural fixture. The methodology can include a sequence of on/off and brightness variations for the array of light sources.
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Citations
17 Claims
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1. A lighting device, comprising:
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a substrate having a longitudinal axis and an operating orientation, first and second parts of the substrate being on opposite sides of a plane containing the longitudinal axis; a plurality of discrete light emission points (DLEPs) positioned along the substrate;
a first subset of the DLEPs being positioned along the first part of the substrate;
a second subset of the DLEPs being positioned along the second part of the substrate;
each of the plurality of DLEPs respectively being in one and only one of the first subset or the second subset;
a lowermost grouping of the DLEPs containing some of the DLEPs of the first subset and some of the DLEPs of the second subset;
a middle grouping of the DLEPs containing some of the DLEPs of the first subset and some of the DLEPs of the second subset;
the middle grouping having more of the plurality of DLEPs than are in the lowermost grouping;
an uppermost grouping of the DLEPs containing some of the DLEPs of the first subset and some of the DLEPs of the second subset;
each of the plurality of DLEPs respectively being in one and only one of the lowermost grouping, the middle grouping, or the uppermost grouping;
the DLEPs in the middle grouping being above the DLEPs in the lowermost grouping when the substrate is at the operating orientation;
the DLEPs in the uppermost grouping being above the DLEPs in the middle grouping when the substrate is at the operating orientation;
at least one of the DLEPs in the first subset having a light emission axis that is offset angularly away from a light emission axis of at least one of the DLEPs in the second subset; anda controller to cause the plurality of DLEPs to simulate a flame, wherein the controller; actuates at least some of the DLEPs in the lowermost grouping to simulate combustion at a bottom of a flame; sequentially actuates at least some of the DLEPs in the middle grouping to simulate a rise in flame height; and actuates at least some of the DLEPs in the uppermost grouping to flicker to simulate a flame tip. - View Dependent Claims (2, 3, 4, 5)
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6. A lighting device, comprising:
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a substrate having a longitudinal axis and an operating orientation, a first part of the substrate extending at least partially on a first side of a plane containing the longitudinal axis, a second part of the substrate extending at least partially on a second side of the plane containing the longitudinal axis; a plurality of discrete light emission points (DLEPs) positioned along the substrate;
a first subset of the DLEPs being positioned along the first part of the substrate;
a second subset of the DLEPs being positioned along the second part of the substrate;
each of the plurality of DLEPs respectively being in one and only one of the first subset or the second subset;
a lowermost grouping of the DLEPs containing some of the DLEPs of the first subset and some of the DLEPs of the second subset;
a middle grouping of the DLEPs containing some of the DLEPs of the first subset and some of the DLEPs of the second subset;
the middle grouping having more of the plurality of DLEPs than are in the lowermost grouping;
an uppermost grouping of the DLEPs containing some of the DLEPs of the first subset and some of the DLEPs of the second subset;
each of the plurality of DLEPs respectively being in one and only one of the lowermost grouping, the middle grouping, or the uppermost grouping;
the DLEPs in the middle grouping being above the DLEPs in the lowermost grouping when the substrate is at the operating orientation;
the DLEPs in the uppermost grouping being above the DLEPs in the middle grouping when the substrate is at the operating orientation;
at least one of the DLEPs in the first subset having a light emission axis that is offset angularly away from a light emission axis of at least one of the DLEPs in the second subset; anda controller to cause the plurality of DLEPs to simulate a flame, wherein the controller; actuates at least some of the DLEPs in the lowermost grouping to simulate combustion at a bottom of a flame; sequentially actuates at least some of the DLEPs in the middle grouping to simulate a rise in flame height; and actuates at least some of the DLEPs in the uppermost grouping to flicker to simulate a flame tip. - View Dependent Claims (7, 8, 9, 10)
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11. A lighting device, comprising:
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a substrate having a longitudinal axis and an operating orientation, a first part of the substrate extending at least partially on a first side of a plane containing the longitudinal axis, a second part of the substrate extending at least partially on a second side of the plane containing the longitudinal axis; a plurality of LEDs positioned along the substrate;
a first subset of the LEDs being positioned along the first part of the substrate;
a second subset of the LEDs being positioned along the second part of the substrate;
each of the plurality of LEDs respectively being in one and only one of the first subset or the second subset;
a lowermost grouping of the LEDs containing some of the LEDs of the first subset and some of the LEDs of the second subset;
a middle grouping of the LEDs containing some of the LEDs of the first subset and some of the LEDs of the second subset;
the middle grouping having more of the plurality of LEDs than are in the lowermost grouping;
an uppermost grouping of the LEDs containing some of the LEDs of the first subset and some of the LEDs of the second subset;
each of the plurality of LEDs respectively being in one and only one of the lowermost grouping, the middle grouping, or the uppermost grouping;
the LEDs in the middle grouping being above the LEDs in the lowermost grouping when the substrate is at the operating orientation;
the LEDs in the uppermost grouping being above the LEDs in the middle grouping when the substrate is at the operating orientation;
at least one of the LEDs in the first subset having a light emission axis that is offset angularly away from a light emission axis of at least one of the LEDs in the second subset, some of the LEDs forming a row in a plane extending generally perpendicular to the longitudinal axis; anda controller to cause the plurality of LEDs to simulate a flame, wherein the controller; actuates at least some of the LEDs in the lowermost grouping to simulate combustion at a bottom of a flame; sequentially actuates at least some of the LEDs in the middle grouping to simulate a rise in flame height; and actuates at least some of the LEDs in the uppermost grouping to flicker to simulate a flame tip. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification