Lighting Device
AssigneeOec AG
InventorsInes Nikolaus, Andreas Timinger
Life of this patent
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Abstract
A lighting device with an extended, non-punctiform light source, a reflector which conically surrounds the light source, and a lens for concentrating the emitted light is characterised by the fact that the lens is mounted so as to be capable of moving along an optical axis of the lighting device within a predetermined range of movement in such a way that the focal point of the lens in the direction of emission can be shifted at least into an area behind the notional apex of the reflector.
Claims26
Lighting device comprising
- an extended light source,
- a reflector which encompasses the light source and is in the form of a conical frustum with an aperture at the widened end of the reflector and a tapered end area at which the light source is arranged with the light being emitted towards the aperture of the reflector, wherein surface lines of the reflector intersect at a notional apex,
- a lens for concentrating the emitted light, wherein the lens is mounted so as to be capable of moving along an optical axis of the lighting device within a predetermined range of movement with the focal point of the lens in the direction of emission being capable of being shifted at least into an area behind the notional apex of the reflector.
Array of lighting devices, wherein the array has several lighting devices, each of the lighting device comprising:
- an extended light source,
- a reflector which encompasses the light source and is in the form of a conical frustum with an aperture at the widened end of the reflector and a tapered end area at which the light source is arranged in such a way that the light is emitted towards the aperture of the reflector, wherein surface lines of the reflector intersect at a notional apex,
- a lens for concentrating the emitted light, wherein the lens is mounted so as to be capable of moving along an optical axis of the lighting device within a predetermined range of movement in such a way that the focal point of the lens in the direction of emission is capable of being shifted at least into an area behind the notional apex of the reflector, and the lighting devices are arranged with their optical axes parallel to one another, wherein the light sources lie on a single plane.
Dependencies are inferred from the claim text.