| 摘要 |
PROBLEM TO BE SOLVED: To provide an organic electroluminescent light-emitting element having high visibility of transmission image, and to provide an illuminating device and an illumination system.SOLUTION: An organic electroluminescent light-emitting element includes a first electrode, an organic light-emitting layer, a second electrode and a first wiring layer. The first electrode has an upper surface, and is translucent. The organic light-emitting layer is provided on the first electrode. The second electrode is provided on the organic light-emitting layer, and is translucent. The first wiring layer is provided between the first electrode and organic light-emitting layer, including a plurality of first wiring parts extending in a first direction in parallel with the upper surface and arranged in a second direction in parallel with the upper surface and crossing the first direction, and is translucent. When the length in the second direction of each of the plurality of first wiring parts is Wh1, and the pitch of each of the plurality of first wiring parts is Ph1, Wh1 and Ph1 satisfy a relationship of Wh1≥-647(1-Wh1/Ph1)+511, and a relationship of Wh1≤-882(1-Wh1/Ph1)+847. |
