ANIMATED LIGHT SOURCE AND METHOD

Abstract
An animated light source and method are provided. The light source may include a plurality of solid-state emitters and a control circuit for controlling the selective energization of the emitters individually to from a beam of light along an axis. The emitters may be selectively energized to provide the appearance of motion of light within the beam.
Description

BRIEF DESCRIPTION OF THE DRAWINGS

The features of this invention and the manner of attaining them will become apparent, and the invention itself will be best understood by reference to the following description of certain embodiments of the invention taken in conjunction with the accompanying drawings, wherein:



FIG. 1 is a diagrammatic view of two states of an array of lights that form a conventional light source, for example a flashlight, built from a plurality of solid state emitters (LEDs), which is switched on and off like any flashlight as constructed according to the prior art.



FIG. 2 is a diagrammatic view of three states of an array of lights that form a conventional vice which turns on selected grouping of the LED light sources to provide different flashlight beam intensities as constructed according to the prior art.



FIG. 3 is a diagrammatic view of three states of an array of lights according to an embodiment of the invention, wherein after the light source turned on, the light source may automatically sequence between two different LED patterns to give a motion effect to the display.



FIG. 4 is a pictorial view of an embodiment of the animated light source housed in a flashlight housing.



FIG. 5 is a diagrammatic view of five states of an array of lights according to an embodiment of the invention, where the animated light patterns may be smoothly ramped in intensity from one to the next, instead of abruptly switching between the animating patterns as in FIG. 3.



FIG. 6 is a schematic diagram of a microcontroller-based circuit to achieve the effect depicted in FIG. 3, as well as many other pattern sequences.



FIG. 7 is a schematic diagram of a circuit to cause one set of LEDs to be linearly dimmed at the same time a second set is linearly increased in intensity, achieving the example effect depicted in FIG. 5



FIG. 8 is a diagrammatic view of two states of an illumination component for a source of illumination such as a flashlight, traffic signal, automobile tail light or other light source turning on and off as constructed according to the prior art.



FIG. 9 is a diagrammatic view of three states of an embodiment of the present invention animating a light source similar to the one shown in FIG. 8.



FIG. 10 is diagrammatic view of three states of an embodiment of the present invention in a traffic signal application, in which a left-turn arrow may be first turned on, and then animated by turning the arrow head on off, for the purpose of increasing visibility due to the motion.



FIG. 11 is a rear view of an automobile using conventional tail lights, constructed either with incandescent lights or arrays of LEDs that are switched on and off according to prior art constructions.



FIG. 12 is a rear view of the automobile which has been fitted (or retrofitted) with a light source according to an embodiment of the invention.



FIG. 13 is a pictorial view of an embodiment of the invention, in which the animated light source may be connected to a personal computer to allow user-customization of the animated light patterns.



FIG. 14 is a diagram in the form of a legend to aid understanding of the figures of the drawings, showing examples of four different patterns to indicate various brightness levels of an LED element.



FIG. 15 is a pictorial view of a signal light source assembly, which is constructed according to an embodiment of the present invention; and



FIG. 16 is a diagrammatic view of a light source apparatus in the form of a traffic signal light employing the signal light source assembly of FIG. 15.


Claims
  • 1. A light source, comprising: a plurality of solid-state emitters, anda control circuit for controlling the selective energization of the emitters individually to from a beam of light along an axis,wherein the emitters are selectively energized to provide the appearance of motion of light along the beam.
  • 2. The light source of claim 1, wherein the emitters are disposed in a circular area having an outer band of emitters and an inner band of emitters.
  • 3. The light source of claim 2, wherein the inner band of emitters are energized together and the outer band of emitters are energized together.
  • 4. The light source of claim 1, wherein the emitters are repeatedly switched between off and substantially full on to provide the appearance of motion of light within the beam.
  • 5. The light source of claim 1, wherein the emitters are repeatedly transitioned between off and substantially full on using at least one intermediate intensity level to provide the appearance of motion of light within the beam.
  • 6. The light source of claim 1, wherein the emitters are disposed in the shape of an arrow with an arrowhead, when the arrow is illuminated the emitters forming the arrowhead are repeatedly transitioned between on and off.
  • 7. The light source of claim 1, wherein the emitters include a least two groups of emitters, the groups of emitters are alternately and repeatedly transitioned between off and on to provide the appearance of motion of light within the beam.
  • 8. The light source of claim 1, wherein the control circuit includes a microcontroller and at least one 16-bit shift register.
  • 9. The light source of claim 1, wherein the control circuit is adapted to illuminate the emitter in a plurality of animations, each animation comprising a collection of light patterns that automatically sequence from one to the next in a repeating fashion.
  • 10. The light source of claim 9, further including a switch for selecting one of the plurality of animations.
  • 11. The light source of claim 9, wherein the plurality of animations are fixedly stored in the control circuit.
  • 12. The light source of claim 9, wherein the patterns switch on and off to achieve a blinking animation effect.
  • 13. The light source of claim 9, wherein the patterns sequence in a linear manner in which a first set of emitters decreases in intensity as a second set of emitters increases in intensity producing a smooth ramping transitional effect.
  • 14. The light source of claim 13, wherein the light intensity of the increasing set of emitters is inversely proportional to the light intensity of the decreasing set of emitters.
  • 15. The light source of claim 8, wherein the microcontroller includes animation information regarding individual emitter patterns, the number of patterns sequenced to make an animation, the timing between patterns, and the number of selectable animations.
  • 16. The light source of claim 15, further including an interface for permitting a user to program the animation information.
  • 17. The light source of claim 1, wherein the light source is a flashlight.
  • 18. The light source of claim 1, wherein the light source is a traffic light.
  • 19. The light source of claim 1, wherein the light source is a vehicle light.
  • 20. The light source of claim 18, wherein the light source is adapted to replace a conventional light source in an existing vehicle without additional modifications to the vehicle.
  • 21. A method of controlling a plurality of solid-state emitters, comprising: controlling the energization of a first set of the emitters to form a beam of light; andcontrolling the energization of a second set of emitters to form the beam of light,wherein the controlling steps provide the appearance of motion of light within the beam.
  • 22. The method of claim 21, wherein the controlling the energization includes repeatedly switching the emitters between off and substantially full on.
  • 23. The method of claim 21, wherein the controlling the energization includes repeatedly transitioning the emitters between off and substantially full on using at least one intermediate intensity level.
  • 24. A light source, comprising: a plurality of solid-state emitters;means for controlling the energization of a first set of the emitters to form a beam of light; andmeans for controlling the energization of a second set of emitters to form the beam of light,wherein the means of controlling provide the appearance of motion of light within the beam.
  • 25. A signal light source assembly for attachment to a light source apparatus, comprising: a housing for connection to the light source apparatus;a light source including a plurality of solid-state emitters mounted on the housing; andthe light source further including a controller for energizing selectively a first set of the emitters to form a beam of light for signaling purposes; and the controller for energizing selectively a second set of the emitters to cause the beam of light to change in appearance for signaling purposes.
Provisional Applications (1)
Number Date Country
60771931 Feb 2006 US