| 摘要 |
PURPOSE:To prevent the fogging of the surface of the lens array of an imaging device by protecting the surface from ozone generated by discharge in a copier, to also prevent the disturbance of an image by flattening the surfaces of lenses and to correct the irregularity of focus positions at every lenses. CONSTITUTION:A film of a transparent synthetic resin 4 is provided to the surface of a lens array not only to block a lens 2 from nitric acid mist generated from ozone but also to flatten the surface of the lens 2. The thickness of the transparent synthetic resin 4 to be applied is determined based on whether the lens 2 is a long or short focus and the transparent synthetic resin 4 is applied so as to become thick on the side of a light source surface 6 in the case of the long focus and on the side of an image forming surface 8 in the case of the short locus. |
