A lamp comprising a first and a second device, which are organic light emitting diode devices (1-9, 41, 42), each organic light emitting diode having a front side and a back side, each organic light emitting diode comprising - organic layers and first and second electrode layers (2, 6), - a substrate layer forming a front side of the device, the first electrode layer being situated between the substrate layer and the organic layers, - an encapsulation layer, the second electrode layer being situated between the encapsulation layer and the organic layers, and - a metal layer (8, 9) forming the back side of the device, the encapsulation layer being situated between the metal layer (8, 9) and the second electrode layer, the metal layer (8, 9) comprising first and second parts (8, 9) which are electrically isolated from each other, the first part being electrically coupled to the first electrode layer via a longer line realized through an electrically conductive glue besides the encapsulation layer, the second electrode and the organic layers and the second part being electrically coupled to the second electrode layer via another separated shorter line realized through the electrically conductive glue beside the encapsulation layer, the longer and shorter lines being arranged between the metal layer (8, 9) and the first and second electrodes (2, 6), respectively, characterized in that the lamp further comprises - a combiner (21, 22) for combining the first and the second devices (41,42), where the first and second devices (41,42) are combined with their back sides to each other via a combiner (21, 22) to emit light in opposite directions, whereby, when being combined via the combiner (21, 22), at least one of the first parts (8, 18) of the metal layers of the first and second devices (41, 42) is coupled to a first conductor and at least one of the second parts (9, 19) of the metal layers of the first and second devices (41,42) is coupled to a second conductor. - organic layers and first and second electrode layers (2, 6), - a substrate layer forming a front side of the device, the first electrode layer being situated between the substrate layer and the organic layers, - an encapsulation layer, the second electrode layer being situated between the encapsulation layer and the organic layers, and - a metal layer (8, 9) forming the back side of the device, the encapsulation layer being situated between the metal layer (8, 9) and the second electrode layer, the metal layer (8, 9) comprising first and second parts (8, 9) which are electrically isolated from each other, the first part being electrically coupled to the first electrode layer via a longer line realized through an electrically conductive glue besides the encapsulation layer, the second electrode and the organic layers and the second part being electrically coupled to the second electrode layer via another separated shorter line realized through the electrically conductive glue beside the encapsulation layer, the longer and shorter lines being arranged between the metal layer (8, 9) and the first and second electrodes (2, 6), respectively, - a combiner (21, 22) for combining the first and the second devices (41,42), where the first and second devices (41,42) are combined with their back sides to each other via a combiner (21, 22) to emit light in opposite directions, whereby, when being combined via the combiner (21, 22), at least one of the first parts (8, 18) of the metal layers of the first and second devices (41, 42) is coupled to a first conductor and at least one of the second parts (9, 19) of the metal layers of the first and second devices (41,42) is coupled to a second conductor.