Organic electroluminescent element, lighting device, and lighting system

A lighting device, comprising:

• an organic electroluminescent element including
• a substrate being light-transmissive,
• a first electrode,
• a second electrode provided between the substrate and the first electrode, the second electrode being light-transmissive and including a first region and a second region, a direction connecting the first region and the second region intersecting a first direction connecting the substrate and the first electrode,
• an organic layer provided between the second electrode and the first electrode, and
• a first conductive unit provided between the first region and a portion of the substrate and electrically connected with the second electrode, the first conductive unit including a third region and a fourth region, a portion of the fourth region being disposed between the substrate and at least a portion of the third region;
• and
• a power supply unit electrically connected with the first electrode and the second electrode, the power supply unit supplying a current to the organic electroluminescent element.

A lighting system, comprising:

• a plurality of organic electroluminescent elements, each of the organic electroluminescent elements including
• a substrate being light-transmissive,
• a first electrode,
• a second electrode provided between the substrate and the first electrode, the second electrode being light-transmissive and including a first region and a second region, a direction connecting the first region and the second region intersecting a first direction connecting the substrate and the first electrode,
• an organic layer provided between the second electrode and the first electrode, and
• a first conductive unit provided between the first region and a portion of the substrate and electrically connected with the second electrode, the first conductive unit including a third region and a fourth region, a portion of the fourth region being disposed between the substrate and at least a portion of the third region;
• and
• a controller electrically connected with one of the plurality of organic electroluminescent elements, the controller controlling an intensity of a light emission of the one of the plurality of organic electroluminescent elements.