Exposure device and image forming apparatus

An exposure device comprising:

• a substrate on which a plurality of light emitting elements that emit light in a normal direction of a substrate and that are arranged so as to be aligned in a first direction;
• a recording layer that is arranged on the substrate, and that has hologram elements corresponding to the plurality of light emitting elements, respectively,
• wherein the hologram elements diffract light emitted from each of the plurality of light emitting elements by a corresponding hologram element, and condenses the light on a condensing point that is located at an intersection between a normal line of each of the light emitting elements, and a face to be exposed;
• and
• one light inhibiting part that is provided to extend in the first direction, and that is arranged between the face to be exposed and the recording layer such that the light diffracted by each of the plurality of hologram elements passes through the outside of the light inhibiting part and condenses at the condensing point, to inhibit transmission zeroth-order light that goes straight toward the condensing point from the light emitting element without being diffracted by the corresponding hologram element.