Abstract: An electron multiplier includes a plurality of staggered parallel dynodes disposed between two insulating vanes. The dynodes are disposed between a cathode at one end and a high energy electron filter at the other end. The electron filter includes at least two staggered filter bodies which extend into the space between the vanes. Each of the filter bodies extends slightly more than one-half the distance between the vanes so as to provide no straight path therethrough for high energy electrons, i.e., the filter is optically opaque. Between the dynodes closest to the cathode and the electron filter is a transition region. The transition region includes transition dynodes, having unequal widths and unequal spacings, and steering electrodes. In multiplier operation, the transition region functions to steer low energy electrons around the electron filter.

Abstract: An electron multiplier includes a plurality of staggered parallel dynodes. The dynodes include spaced confinement bumps along their lengths with active multiplying areas between the bumps. The confinement bumps and active areas therebetween define a plurality of channels which extend from a cathode at one end of the multiplier to the output end. Each channel traverses the staggered parallel dynodes and causes an electron beam to pass therethrough without substantial spreading. The electron multiplier includes additional structure for creating a high gain condition in the channels which are desired to be in an "on" condition while simultaneously creating a low gain condition in the adjacent channels. Electrical potentials can be simply switched at the dynodes so as to change this first condition into a second condition where the relative gain parameters of the channels are reversed.

Abstract: An electron multiplier includes a plurality of staggered parallel dynodes. The dynodes include spaced confinement bumps along their lengths with active areas between the bumps. The confinement bumps and active areas therebetween define a plurality of channels which extend from a cathode at one end of the multiplier. Each channel traverses the staggered parallel dynodes and causes an electron beam to pass therethrough without spreading. The multiplier is useful in a display device which includes a plurality of line sources of electrons, e.g., a plurality of cathode stripes.

Abstract: The structure comprises an evacuated envelope that includes a transparent front panel having a cathodoluminescent screen thereon and a back panel interconnectably sealed to the front panel. A plurality of first vanes, spaced from and parallel to each other, are perpendicular to and in contact with the back panel and a plurality of second vanes, spaced from and parallel to each other, are perpendicular to and in contact with the front panel. The first and second vanes are transverse to each other and provide mutual support for each other. Electroding to control operation of the device is formed directly on the vanes.

Abstract: A metal sheet is provided with a plurality of slots which are disposed in parallel rows and columns. Charge sensing pads are disposed on an insulating layer on one surface of the metal sheet with a separate pair of the charge sensing pads being in abutting relation and sandwiching a separate slot. The sensing pads include a portion which extends beyond the length of the slot and is of a material having a high secondary emission ratio. The sensing pads have a capacitance to the metal layer such that they can be electrically charged to a common voltage level which permits a substantially uniform maximum electrical charge to pass into each one of the slots when the abutting sensing pads are discharged by line electron sources. The charge sensing pads may be repetitively charged, i.e., brought back to the common level, through secondary emission from the portions of the pads which extend beyond the slots.