Adjustable-beam luminaires with automatic beam controller
A luminaire for providing configurable static lighting or dynamically-adjustable lighting. The luminaire uses an array of focusing elements that act on light provided via a corresponding array of sources or via an edge-lit lightguide. Designs are provided for adjusting the number of distinct beams produced by the luminaire, as well as the angular width, angular profile, and pointing angle of the beams. Designs are also provided for systems utilizing the adjustable luminaires in various applications.
1. A device comprising:
an array of light sources arranged in a first plane;
a network of electrical connections connected to the light sources;
an array of focusing elements in a second plane substantially parallel to the first plane, the array of focusing elements being aligned with and spaced from the array of light sources, wherein each focusing element of the array of focusing elements is associated with at least one of the light sources, and each focusing element emits a corresponding collimated beam of light;
an adjuster configured to at least alter, over a range of positions, an in-plane position of the array of light sources with respect to the array of focusing elements, the alteration enabling control of an overall light beam emitted by the focusing elements; and
an automated controller for the adjuster that receives signals and automatically controls the adjuster, based on the signals, to control the overall light beam emitted by the focusing elements.
2. The device of claim 1 wherein the controller is configured to steer the light beam.
3. The device of claim 1 wherein the device is affixed to a vehicle.
4. The device of claim 3 wherein the vehicle is an automobile.
5. The device of claim 3 wherein the vehicle is a plane.
6. The device of claim 1 wherein the device is mounted on a moving system and the controller stabilizes the light beam to counteract movement of the moving system.
7. The device of claim 1 wherein the device illuminates a person, and the controller is configured to control the adjuster so that the light beam tracks the person.
8. The device of claim 1 further comprising sensors that generate the signals, wherein the sensors comprise at least one of motion sensors, acoustic sensors, and optical sensors.
9. The system of claim 1 wherein the controller controls the adjuster to steer the light beam as the sun moves across the sky.
10. The system of claim 9 wherein the controller controls the adjuster to illuminate areas based on movement of the sun.
11. The device of claim 1 wherein the signals are received radio signals.
12. The device of claim 1 wherein the focusing elements comprise refractive lenses.
13. The device of claim 12 further comprising an array of reflective lenses wherein each reflective lens is associated with the at least one of the light sources and one of the refractive lenses, and wherein light emitted by a light source first strikes a reflective lens and then transits an associated refractive lens before being emitted from the apparatus.
14. The device of claim 1 wherein the focusing elements comprise reflective lenses, each reflective lens having a light receiving face that is illuminated by the at least one of the light sources to reflect light from the at least one of the light sources.
15. The device of claim 1 wherein the light sources are light emitting diodes.
16. The device of claim 1 wherein the adjuster is configured to at least rotate the array of focusing elements with respect to the array of light sources, the rotation enabling control of divergence of the overall light emitted by the apparatus.
17. The device of claim 1 wherein the adjuster is configured to at least laterally translate the array of focusing elements with respect to the array of light sources, the translation enabling control of a direction of an overall light emitted by the device.
18. The device of claim 1 wherein the adjuster is configured to at least adjust a distance between the array of focusing elements and the array of light sources, the adjustment enabling control of divergence of an overall light emitted by the device.
19. The device of claim 1 wherein there are multiple light sources associated with each focusing element.
20. The device of claim 1 wherein the light beam comprises visible light.