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US 8,136,961 B2Granted
Electro-luminescent area illumination device
AssigneeGlobal OLED Technology LLC
InventorsMichael E. Miller, Ronald S. Cok
Life of this patent
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Abstract
An electro-luminescent area illumination device that includes two or more area emitters formed on a substrate. Each of the two or more area emitters emit light having different area illumination profiles.
Claims20
An electro-luminescent area illumination device, comprising:
- a) a substrate;
- b) two or more area emitters formed on the substrate, wherein each of the two or more area emitters emit light having different area illumination profiles and the different area illumination profiles comprise different cone angles for directing narrow-beam and wide-beam illumination;
- c) wherein the two or more area emitters comprise respective two or more electrode segments that are formed on the substrate, each of the two or more electrode segments being reflective, an electro-luminescent layer formed over the two or more electrode segments, and an electrode formed over the electro-luminescent layer, the electrode being transparent;
- and
- d) wherein the electro-luminescent area emitter with the narrow-beam profile is smaller than the electro-luminescent area emitter with the wide-beam profile.
2 more elements
An electro-luminescent area illumination device, comprising:
- a) a substrate;
- b) a first electro-luminescent area emitter formed on the substrate in correspondence with first optical elements;
- c) a first optical element that directs emitted light from the first electro-luminescent area emitter to shape a first illumination profile for directing narrow-beam illumination;
- d) a flat optical element that allows emitted light from a second electro-luminescent area emitter formed on the substrate having a second illumination profile for directing wide-beam illumination;
- e) wherein the first and second electro-luminescent area emitters comprise respective first and second electrode segments that are formed on the substrate, each of the first and second electrode segments being reflective, an electro-luminescent layer formed over the first and second electrode segments, and an electrode formed over the electro-luminescent layer, the electrode being transparent;
- and
- f) wherein the first electro-luminescent area emitter is smaller than the second electro-luminescent area emitter.
4 more elements
A system for illuminating an environment comprising:
- an electro-luminescent area illumination device, comprising:
- a) a substrate;
- b) two or more area emitters formed on the substrate, wherein each of the two or more area emitters emit light having different area illumination profiles and the different area illumination profiles comprise different cone angles for directing narrow-beam and wide-beam illumination;
- c) a controller for controlling the direction, illumination level or color of at least one of the two or more area emitters to provide both a directed, narrow angle illumination and a wide angle illumination;
- d) wherein the two or more area emitters comprise respective two or more electrode segments that are formed on the substrate, each of the two or more electrode segments being reflective, an electro-luminescent layer formed over the two or more electrode segments, and an electrode formed over the electro-luminescent layer, the electrode being transparent;
- and
- e) wherein the electro-luminescent area emitter with the narrow-beam profile is smaller than the electro-luminescent area emitter with the wide-beam profile.
4 more elements
Dependencies are inferred from the claim text.