Abstract:
The luminaire (1) comprises alight-emitting semiconductor chip (2) having a main emission side (20) and a reflector (3) having a reflection side (30) that faces the main emission side (20). A base line (B) runs through the main emission side (20) and a local height (h) of the reflection side (30) is measured against the base line (B). A local focal length (f) of the reflection side (30) increases along the local height (h), concerning ray bundles (R) coming in parallel with the base line (B) from an exterior of the luminaire (1).
Abstract:
A device (1) comprises a metal surface (2) and a ceramic coating (3) applied on the metal surface (2). The ceramic coating (3) comprises ceramic particles (31), a silane-based compound (32) as a binder and inorganic pigments (33). The ceramic coating (3) is free of fluorinated polymers.
Abstract:
The lamp (2) contains a plurality of semiconductor light sources (21) as well as an electrical terminal node (22) and at least one electrical connection line (23). Said semiconductor light sources (21) are electrically connected with the terminal node (22) via the connection line (23). Electrical operating data of the semiconductor light sources (21) are saved in the terminal node (22). The semiconductor light sources (21) can be electrically activated independently of each other. In addition, the terminal node (22) is an electrically passive or active component.
Abstract:
The invention concerns a lighting arrangement having at least two light strings, each light string comprising at least one optoelectronic component configured for a power consumption in operation of more than 8 W. A couple of adjustable current sources are connected to a respective one of the at least two light strings and configured to provide an adjustable supply current to respective one of the at least two light strings. The arrangement further comprises an AC/DC converter utilizing GaN based FET technology configured to provide a DC supply voltage to the at least two adjustable current sources and the respective light strings connected thereto. Finally, a control circuit is coupled to the at least two adjustable current sources and configured to individually adjust a duty cycle for each of the at least two adjustable current sources and the supply current provided by the at least two adjustable current sources.
Abstract:
Es wird eine Beleuchtungsvorrichtung angegeben, mit – zumindest zwei Leuchtdioden (1), wobei die Leuchtdioden (1) im Raum entlang einer, insbesondere geschlossenen, Kurve (31) angeordnet sind, – einem Reflektor (2), der eine dreidimensionale, unebene reflektierende Oberfläche (21) aufweist, wobei – eine Hauptabstrahlrichtung (r1) eines Großteils der Leuchtdioden (1), insbesondere jeder der Leuchtdioden (1), in Richtung des Reflektors (2) gerichtet ist, und – die reflektierende Oberfläche (21) zumindest ein lokales Maximum (22) aufweist, das den Leuchtdioden (1) zugewandt ist.
Abstract:
Es wird eine Beleuchtungsvorrichtung angegeben, mit – zumindest einem Leuchtdiodenchip (1), – einem Kühlkörper (2) mit einer Vielzahl von Kühlrippen (21), und – einem Gehäusekörper (3), wobei – der zumindest eine Leuchtdiodenchip (1) in thermischem Kontakt mit dem Kühlkörper (2) steht, – der Gehäusekörper (3) den Kühlkörper (2) zumindest stellenweise seitlich umgibt, – zumindest manche der Kühlrippen (21) sich in Richtung des Gehäusekörpers (3) erstrecken und sich an ihrer dem Gehäusekörper (3) zugewandten Stirnfläche (210) zumindest stellenweise in insbesondere direktem Kontakt mit dem Gehäusekörper (3) befinden.
Abstract:
A luminaire and an illumination system are disclosed. In an embodiment a luminaire includes at least one light-emitting semiconductor chip having a main emission side and a reflector having a reflection side facing the main emission side, the reflection side being a freeform different from a circle, an ellipse, a parabola or a hyperbola when seen in cross-section, wherein a base line of the reflector runs through the main emission side and a local height of the reflection side is measured against the base line, wherein a local focal length of the reflection side is increased along the local height, concerning ray bundles coming in parallel with the base line from an exterior of the luminaire during operation, and wherein local heights do not have a common focal point.
Abstract:
The lamp (2) contains a plurality of semiconductor light sources (21) as well as an electrical terminal node (22) and at least one electrical connection line (23). Said semiconductor light sources (21) are electrically connected with the terminal node (22) via the connection line (23). Electrical operating data of the semiconductor light sources (21) are saved in the terminal node (22) . The semiconductor light sources (21) can be electrically activated independently of each other. In addition, the terminal node (22) is an electrically passive or active component.