ÉLÉMENT OPTIQUE, DISPOSITIF ÉLECTROLUMINESCENT, DISPOSITIF D'AFFICHAGE ET DISPOSITIF D'ÉCLAIRAGE

摘要

There is provided an optical member that achieves a desired light distribution characteristic while having a simple configuration. The optical member includes a first transparent optical sheet and a second transparent optical sheet that are superimposed on each other in a first axial direction. The first transparent optical sheet includes a structure in which a first region and a second region are alternately disposed in a second axial direction. The first region outputs first outgoing light that is generated by refracting first incoming light to a first direction along the second axial direction, and the second region outputs second outgoing light that is generated by refracting second incoming light to a second direction opposite to the first direction. The second transparent optical sheet includes a structure in which a third region and a fourth region are alternately disposed in a third axial direction. The third region outputs third outgoing light that is generated by refracting third incoming light to a third direction along the third axial direction, and the fourth region outputs fourth outgoing light that is generated by refracting fourth incoming light being to a fourth direction opposite to the third direction. An angle formed by the third axial direction with respect to the second axial direction is equal to or greater than 0° and less than 45°.