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 (3-5) and first and second electrode layers , - a substrate layer forming a front side of the device, the first electrode layer being situated between the substrate layer and the organic layers (3-5), - an encapsulation layer , the second electrode layer being situated between the encapsulation layer and the organic layers (3-5), and - a metal layer forming the back side of the device, the encapsulation layer being situated between the metal layer and the second electrode layer , the metal layer comprising first and second parts 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 (3-5) 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 and the first and second electrodes , respectively, characterized in that the lamp further comprises - a combiner for combining the first and the second devices , where the first and second devices are combined with their back sides to each other via a combiner to emit light in opposite directions, whereby, when being combined via the combiner , at least one of the first parts of the metal layers of the first and second devices is coupled to a first conductor and at least one of the second parts of the metal layers of the first and second devices is coupled to a second conductor . - organic layers (3-5) and first and second electrode layers , - a substrate layer forming a front side of the device, the first electrode layer being situated between the substrate layer and the organic layers (3-5), - an encapsulation layer , the second electrode layer being situated between the encapsulation layer and the organic layers (3-5), and - a metal layer forming the back side of the device, the encapsulation layer being situated between the metal layer and the second electrode layer , the metal layer comprising first and second parts 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 (3-5) 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 and the first and second electrodes , respectively, - a combiner for combining the first and the second devices , where the first and second devices are combined with their back sides to each other via a combiner to emit light in opposite directions, whereby, when being combined via the combiner , at least one of the first parts of the metal layers of the first and second devices is coupled to a first conductor and at least one of the second parts of the metal layers of the first and second devices is coupled to a second conductor . <EOS>