Abstract: An apparatus for photographing images on a CRT comprises a single lens interposed between the CRT and a film, a lens mount for supporting the lens thereon with its optical axis positioned perpendicular to the film, and a drive mechanism for rotating the lens mount about a support shaft substantially parallel with the optical axis. The lens is moved to and stopped at a plurality of positions by the mechanism for focusing the CRT images on the frames of the film individually. The images formed on the film are identical in quality and free from variations in sharpness or density, whereas the apparatus is simple in construction and compact in its entirety.

Abstract: A therapeutic tomographic system in which the film on which the image appearing on a monitor television is to be projected is adsorbed through a feed belt on a low pressure box whose interior is held at a negative pressure. And the feed belt with the film adsorbed thereon is reciprocally moved.

Abstract: A feeder has a link mechanism comprising a connecting rod, an intermediate arm and a pivotal arm. The uppermost sheet is lifted at its front end rearwardly upward first and is then sent forward by a sucking disk supported by the pivotal arm.

Abstract: A light source unit assembly for use in a photographic enlarger on the optical axis of its light source between the light source and a negative comprises a first optical system of the semi-diffused illumination type and a second optical system of the diffused illumination type which are incorporated into a unit and alternatively positionable on the optical axis. A diffusing tube housed in a frame is divided into a diffusing chamber for the first optical system and another diffusing chamber having a larger length than the chamber for the second optical system, by a partition having a light diffusing surface on each of its opposite sides. A light passing aperture is opposed to the diffusing surface. A diffusing filter and a condenser are positioned across the path of the light reflected from one of the diffusing surfaces to provide a secondary light source for the semi-diffused illumination system.