Patent ID: 8870419
Filing Date: 2014-10-28
Classification: F21V

Abstract:
1. A lighting system comprising: a plurality of LEDs positioned as a light source for generating a light beam, and a moveable lenslet array being a first optical element for changing a beam characteristic of the light beam, the light source and the first optical element being arranged such that the first optical element is movable under the influence of a gravitational field in such a way that mutual positions of the light source and the first optical element are dependent on an orientation of the lighting system with respect to the gravitational field, wherein the orientation changes the beam characteristic from being substantially parallel when the light source is directed downwards toward a floor illuminating a first surface area into being divergent when the light source is directed upwards toward a ceiling illuminating a second surface area, such that the second surface area is larger than the first surface area; and a second optical element, wherein the first and the second optical element are positioned in a housing, the second optical element fixedly attached to the housing and the first optical element arranged to freely move between a first position and a second position under the influence of the gravitational field; the second optical element includes a plurality of colored portions; wherein the first optical element has a first focal point in the first position and a second focal point in the second position, the first focal point different than the second focal point; and, wherein the second focal point is coincident with a plane defined by the plurality of colored portions.