OPTICAL PRINT HEAD AND IMAGING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide an optical print head and an imaging apparatus in which intensive light can be taken out while reducing the size. SOLUTION: The light emitting element 1 of an optical print head comprises in one pixel on a substrate an organic EL layer, transparent electrodes 2 composed of a translucent material having a refractive index larger than that of the substrate and applying a voltage to the organic EL layer, a plurality of independent Al electrodes 3,... disposed oppositely to the transparent electrodes 2 through the organic EL layer and applying a voltage to the organic EL layer together with the transparent electrodes 2, and a protective film composed of a material having a refractive index smaller than that of the transparent electrode 2 and covering the transparent electrodes 2. When the Al electrodes 3 are driven selectively, light generated in the organic EL layer transmits the transparent electrode 2 and is emitted from the edge 1a of the light emitting element 1.