Abstract: An apparatus for measuring diffuse optical transmission density of a photographic films sample uses two integrating spheres and a diffuse light source. Light from the light source is transmitted through a first light modulation system into the first integrating sphere. Light from the first integrating sphere is transmitted through a second light modulation system into the second integrating sphere. A fixed monochromator receives light at an exit port of the second integrating sphere. The light modulation systems take the form of adjustable diaphragms which allow for the modulation of the uniform radiance area located between the two integrating spheres and maintains the geometric and spectral conditions relating to the illumination of the sample located at the output port of the second integrating sphere.

Abstract: A method of making stereoscopic images comprises a first step of exposing a color negative film in a stereoscopic camera to produce a film strip having a plurality of stereo image pairs thereon and then a second step of printing the stereo image pairs onto a color transparency material in a circular pattern. The method may further include the step of punching a disk out of the color transparency material with the stereo image pairs arranged around the circumference of the disk.

Abstract: A stereoscopic disk for viewing stereo images in a binocular viewer includes a film disk with a plurality of stereo image pairs disposed around the periphery of the film disk, sandwiched between a pair of disks of opaque material defining windows, in which the stereo images on the film disk are located. A method for making the stereoscopic disks includes the steps of making a master image of the stereoscopic images arranged in a circular pattern, printing the master image onto photographic film, laminating the film with strips of opaque material having windows for the images on the disk, and punching out the finished disk from the laminated assembly. A simple stereo viewer employs the film disks without the laminations.

Abstract: A stereoscopic system includes a stereoscopic camera for exposing color negative film and a printer for printing the color negative stereo images captured by the camera onto positive color transparency film. In one example, the stereoscopic camera is a fixed exposure single use camera. A stereoscopic printer for producing stereoscopic disks includes a rotating print head for exposing a plurality of stereo image pairs in a circular pattern. A stereoscopic disk of the type that is used in a View.RTM.-Master viewer is produced from the transparency film.