Image writing device, light source, light source unit, microlens and fabrication method for microlens

摘要

Not only is down sizing of an image writing device achieved by reducing a conjugate distance but also a diameter of a spot light impinging on a photosensitive drum for illumination can be freely varied. The image writing device is equipped with light a source means having a light emission layer formed on a transparent substrate and a microlens array configured so as to face the light source.