Adjustable-beam luminaires
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 . An apparatus for emitting a directional light beam comprising:
a light source;
electrical connections connected to the light source;
one or more heat-spreading elements connected to the light source;
a focusing element spaced away from the light source; and
an adjuster configured to at least alter, over a range of positions, an in-plane position of the focusing element with respect to the light source, such that the light source remains within a fixed plane relative to the focusing element, the fixed plane being an approximate focal plane of the focusing element, and the alteration enabling control of the directional light beam emitted by the apparatus;
wherein the focusing element comprises a reflective lens; and
wherein the electrical connections and heat-spreading elements are configured to only partially block light reflected by a face of the reflective lens.
2 . The apparatus of claim 1 wherein the electrical connections and the one or more heat-spreading elements are combined to form a single structure.
3 . The apparatus of claim 1 wherein the reflective lens comprises a dielectric-filled reflective lens.
4 . The apparatus of claim 1 wherein the electrical connections and heat-spreading elements comprise a narrow strip.
5 . The apparatus of claim 1 wherein the electrical connections and heat-spreading elements comprise one or more metal-core printed circuit boards.
6 . The apparatus of claim 1 wherein a diameter of the light source is at most one-fifth the diameter of the focusing element.
7 . The apparatus of claim 1 wherein the light source is comprised of one or more vertical-cavity surface emitting lasers.
8 . The apparatus of claim 1 wherein the light source is comprised of one or more light emitting diodes.
9 . The apparatus of claim 8 wherein the one or more light emitting diodes have substantially flat emission faces.
10 . The apparatus of claim 1 wherein the adjuster is manually-operated.
11 . The apparatus of claim 1 wherein the adjuster is operated by actuators connected to a control system.
12 . An apparatus for emitting a directional light beam comprising:
a light source;
electrical connections connected to the light source;
one or more heat-spreading elements connected to the light source;
a focusing element spaced away from the light source;
an adjuster configured to at least alter, over a range of positions, an in-plane position of the focusing element with respect to the light source, the alteration enabling control of the directional light beam emitted by the apparatus; and
wherein the focusing element comprises a reflective lens,
wherein the electrical connections and heat-spreading elements are configured to only partially block light reflected by the reflective lens,
wherein the light source comprises one or more light emitting diodes, and
wherein the adjuster is configured to at least laterally translate the focusing element with respect to the one or more light emitting diodes, the translation enabling control of a direction of the directional light beam emitted by the apparatus.
13 . An apparatus for emitting a directional light beam comprising:
a light source;
electrical connections connected to the light source;
one or more heat-spreading elements connected to the light source;
a focusing element spaced away from the light source;
an adjuster configured to at least alter, over a range of positions, an in-plane position of the focusing element with respect to the light source, the alteration enabling control of the directional light beam emitted by the apparatus; and
further comprising additional light sources and focusing elements, forming an array of light sources and a corresponding array of focusing elements, and
wherein the array of light sources is in a first plane and the array of focusing elements is in a second plane substantially parallel to the first plane, and
wherein arrays of electrical connections and heat spreading elements form a network connecting all of the light sources in the array of light sources, and
wherein the adjuster is configured to adjust the position of the array of focusing elements with respect to the array of light sources, the adjustment enabling control of the directional light beam emitted by the apparatus.
14 . The apparatus of claim 13 wherein the adjuster is configured to at least enable rotation of the array of focusing elements with respect to the array of light sources, the rotation enabling control of divergence of the directional light beam emitted by the apparatus.