Abstract: A method for making a color imaging device that comprises means for sensing radiation comprising a planar array of charge-handling semiconductive photosensors, at least some of the photosensors having a radiation sensing area with at least one dimension less than about 100 micrometers, and superimposed thereon, filter means for controlling access of radiation to the sensing means. The filter means comprises a transparent, polymeric dye receiving layer for receiving heat-transferable dyes and further comprises a plurality of radiation intercepting means defining a planar array of filter elements lying in the receiving layer in micro-registration with the sensing areas of the photosensors. The filter area of each intercepting means contains at least one heat-transferable dye transferred to the dye receiving layer by heating and diffusion. The heat-transferable dye absorbs radiation in at least one portion of the spectrum and transmits radiation in at least one other portion of the spectrum.

Abstract: A target and target assembly for a camera tube in which a semiconductor plate is provided on an annular support and consists of a semiconductor monocrystalline edge portion which comprises an integrated circuit for handling the electrical signals originating from the target, the central part consisting of a radiation-sensitive layer having one or more radiation-permeable electrodes. The electrodes are connected to inputs of the intergrated circuit of which the leads necessary for supply and control voltages are led through. A window is provided on the electrodes and overlaps the inner edge of the support, the window, the edge portion and the support adjoining each other in a vacuum-tight manner.

Abstract: A face plate for a color pick-up tube which comprises a transparent substrate, stripe-like color filters formed on the transparent substrate, a protection layer deposited so as to cover the stripe color filters and the exposed portions of the transparent substrate, stripe-like transparent electrodes formed on predetermined portions of the protection layer, a photoconductive layer, bus bar electrodes and an insulation layer.The insulation layer and the protection layer are, respectively, formed of different materials which have different resistances to an etching solution, whereby the stripe-like filters are protected from the adverse influence of the etching solution used to form the insulation layer by a photoetching treatment.

Abstract: The optical system of a pickup tube is comprised by an optical low pass filter, a light transmissive substrate formed with a black mask and a color compensating filter, and another light transmissive substrate formed with a photoconductive film at a predetermined position of one surface, which are bonded together into an integral structure. The optical system is mounted on the light receiving end of the pickup tube. When compared with a conventional construction wherein the component elements of the optical system are independently and separately mounted the loss of the incident light due to reflections at the interfaces of respective elements can be reduced.

Abstract: A color encoding or dichroic filter for video transmission and method of making the same is provided. The color encoding filter can be used with a vidicon tube to provide color signals for video transmission. The filter comprises a substantially transparent substrate, such as glass, having a plurality of grid patterns superimposed thereon with each pattern individually or in conjunction with an overlapping grid pattern capable of transmitting a predetermined bandwidth of energy. A substantially transparent filler material is utilized to complete the filter structure. The filler material is substantially transparent to the desired transmitted bandwidth of energy and is further optically complementary to the filter material of each individual grid pattern to minimize any refractive scattering of transmitted energy. The filler material also provides both a planar exterior surface to the filter and further permits the filter material of the overlapping grid patterns to be maintained with a constant thickness.

Abstract: In a television pickup tube, a target comprises a photo-conductive material such as antimony trisulfide, amorphous selenium or the like arranged on a transparent zinc oxide layer which is formed adjacent to a transparent electrode on a transparent faceplate or substrate. The transparent electrode may be etched so as to form a pair of electrodes each connected to a signal deriving terminal in the case where the target structure is for a color television pickup tube.

Abstract: A stripe-shaped color separation filter for use with an image pickup tube is disclosed which is covered at its one surface with a layer of transparent material such as glass or SiO.sub.2 having a surface thereof which is flat enough to be practical for use with the image pickup tube. The layer of glass or SiO.sub.2 is formed on the filter by directly applying melted materials thereon, melting down (sintering) powdered materials, chemical vapor deposition, sputtering, or vacuum deposition.

Abstract: A spatial filter covered with first protective layers and a second protective layer, wherein the second protective layer is mounted on the first protective layers so as to fill up recesses appearing in the surface of said first protective layers which are evaporated on filter stripes deposited on the surface of a substrate and on those parts of the surface of said substrate on which filter stripes are not formed and, when the spatial filter is placed in an image pickup tube, the second protective layer having a smooth flawless surface enables the image pickup tube to produce a good output image for a long period.

Abstract: A photo-conductive target pick-up tube has a vacuum sealed envelope housing a tubular anode electrode on the gun cathode side of the target. The anode electrode is roughened on its inner surface to provide light scattering from a lamp which is mounted in a cavity protruding into the envelope but which cavity is sealed from the vacuum inside the envelope. The lamp is mounted on the longitudinal axis of the axis so as to provide an artificial dark current which tends to reduce build-up and decay lag at low light level operating conditions.

Abstract: A color pick up tube having a target structure comprising a transparent substrate a plurality of red, green and blue optical strip filters, each having a width F, mounted interleavely on one surface of the substrate, a thin glass layer, having a thickness T, mounted on the optical strips, a plurality of optically transparent, electrically conductive strips each having a width N, laid down on the thin glass layer such that each conductive strip corresponds to a respectively different optical strip.In order to prevent optical color cross talk, the widths F, N and the thickness T have the following relationship ##EQU1## WHERE .theta. IS THE INCIDENT ANGLE IN THE GLASS LAYER.

Abstract: A light-sensitive target for a color television system which includes a transparent carrier plate such as the front plate of a color television camera, having discrete strips of interference filter material disposed thereon. The strips are disposed in parallel relation on the inside surface of the transparent carrier. An intermediate layer is formed over these strips to eliminate abrupt or sharp edges presented by the strip to the inside surface of the tube. A conductive layer is formed over the intermediate layer and finally a light sensitive medium is disposed over the entire inside surface of the system. By means of the intermediate layer, the contour between the light-sensitive and the conductive layers are caused to have generally rounded configurations, thereby eliminating interferences.

Abstract: In a color pickup tube for use in a single tube or two tube type color television camera system wherein an optical color analyzing stripe filter, a transparent film, a transparent electroconductive film and a photoconductor film are disposed in the order mentioned on the rear side of the transparent glass substrate of the tube, the thickness of the transparent film is increased gradually from the central portion toward the peripheral portion of the transparent film.