Photographic processing apparatus

摘要

The present invention provides a device for uniformly irradiating the surface of the negative film without making the size of the mirror tunnel larger. The invention also makes the size of the device smaller and reduces electric power consumption. A fly eye lens (13) is used as a diffuser plate of the light incoming side of a mirror tunnel. The fly eye lens has a plurality of micro-lenses (13) arranged on a transparent substrate for forming concave and convex shapes on the surface thereof facing the diffuser so as to lead the incident light into the mirror tunnel. Thereby, the light incident to the fly eye lens is hardly diffused out of the area of the mirror tunnel and the loss in the quantity of light is reduced. In addition, since the fly eye lens uniformly disperses the incident light onto the surface of the photo film, the light can be uniformly irradiated onto the surface of the photo film (7) even if the incident light is not strongly diffused by the diffuser and the mirror tunnel. The first and second fly eye lenses and the first and the second condenser lenses are disposed in the optical path between the halogen lamp and the negative film. The light irradiated from the halogen lamp is made uniform by the first and the second fly eye lenses, and it is then condensed by condenser lenses, and then it is irradiated onto the original image on the negative film (7).