Abstract: A radiation imaging system comprises a grid for receiving a large field, low intensity, radiation image and for removing scattered radiation therefrom. A device which is responsive to the grid converts the radiation image into a visible light image. A plurality of light conductive fibers with each fiber having an input end and an output end is provided. The input ends are separated by a discrete distance from one another and are in substantial registration with the grid for conducting the visible light image. The output ends are substantially adjacent to one other thereby effecting size reduction of the visible light image. The intensity of the reduced visible light image is increased and the intensified image is output.

Abstract: A stereo imaging apparatus using a single image intensifier is comprised of an input responsive to incident radiation corresponding to first and second views. An image intensifier is responsive to the input for simultaneously intensifying the incident radiation corresponding to the first and second views. An output is provided for the intensified radiation.

Abstract: Imaging apparatus including an image intensifier and first and second assemblies for filtering or color encoding incident light before it is received by the image intensifier, and produced light emitted from the image intensifier, respectively. An objective lens and an eyepiece are provided for passing the incident light to the first filtering assembly and for passing the produced light to a predetermined location, preferably to an observer. The first and second filtering or encoding assemblies remove from the light, components falling within at least one predetermined range of frequencies. The filtering assemblies may be two disks, an input disk and an output disk, positioned on opposing sides of the image intensifier. Each disk may have one or more filters. Each filter is adapted for removing from the light all components except those having a wavelength falling within a predetermined range of wavelengths.