Abstract: CCD imagers of the field transfer type have field storage registers, with parallel charge transfer channels connected in cascade after respective ones of parallel charge transfer channels in their image registers. Further charge transfer channels are included in the field storage registers for use in generating reference-black-level samples.

Abstract: An ion feedback electron multiplier has an envelope containing an ionizable gas. Within the envelope is a chain of multiplier dynodes divided into two planar groups spaced from and parallel to one another. At one end of the multiplier chain is an electron source capable of emitting electrons upon ion bombardment. An electron lens which is between the multiplier chain and the electron source, focuses the electrons from the source onto one of the dynodes of the multiplier.

Abstract: An image display device has a plurality of electron guides for guiding electron beams to different areas of the device's cathodoluminescent screen. An image is displayed on a device by generating a plurality of electron beams and modulating each of the electron beams with the image information. The beams are directed into one group of a plurality of adjacent electron beam guides so that each beam is directed into a separate guide. The electron beams are then sequentially switched into the next group of adjacent guides until each electron guide has had one beam directed into it.

Abstract: In an image having a plurality of cathode stripes, individual cathodes may be addressed using a system having a first resistor at one end of each of the cathodes and a second resistor at the other end of each of the cathode stripes. The first resistors are bussed so that X number of adjacent first resistors are connected in common to form Y groups; wherein X times Y equals the total number of cathode stripes. A plurality of first switches are connected to the groups of first resistors to selectively apply one of two voltage levels to each group. The second resistors are connected into X groups each having Y resistors. A plurality of second switches selectively switch one of two voltage levels to each group of second resistors.

Abstract: An evacuated envelope includes front and rear walls in spaced parallel relationship to one another and connected by a plurality of side walls. On the inner surface of the front wall is a cathodoluminescent screen having stripes of different color light emitting phosphor material. Within the envelope and adjacent to the back wall are a plurality of electron beam guides extending in one dimension. The electron beam guides include means for deflecting the beam out of the guide toward the screen. Between the screen and the beam guides in the evacuated envelope is means for focusing the deflected electron beam sequentially onto one of several stripes of the screen.

Abstract: Electrodes in an image display device are biased by a circuit composed of a first switch means for applying a first potential to one of at least two sets of alternate electrodes. The circuit also includes means for isolating each of the electrodes in a given set from the other electrodes in that set. A second switch means applies a second electrical potential to one electrode in the other set. Alternate embodiments of the present invention relate to multiplexing of the switching circuitry to reduce the number of components.

Abstract: An improvement for a transcalent semiconductor device includes a semiconductor ballast resistor in contact with the emitter regions of a semiconductor transistor. The semiconductor transistor with the ballast resistor in contact therewith is sandwiched between two closed heat pipes wherein one heat pipe is in thermal and electrical contact with the transistor and the other heat pipe is in thermal and electrical contact with the resistor.

Abstract: An electron gun is controlled by a system which stores the characteristics of the gun in a random access memory. The contents of the memory feed an electron gun driver which properly biases the gun. The characteristics of the gun are stored in the memory by using a collector to sense the electron beam. A comparator is connected to the collector and a reference brightness signal generator. The output of the comparator controls the storage of the characteristics in the memory.

Abstract: Each beam of a multi-electron beam display device is controlled to achieve uniformity of the displayed image. A collector senses the electron current of each beam. The level of the electron current of each beam is stored in a memory. When a particular beam is to be modulated, the memory is addressed so that the electron current level information for that beam is read out. The stored information and the incoming image element brightness information are combined to modulate the particular electron beam.

Abstract: An insulating substrate is provided with a plurality of discrete electrode pads on a surface thereof. A thermionic line cathode, e.g., a directly heated filament, is positioned to one side of the substrate surface and extends across a surface of each one of the electrode pads. An apertured electrode is positioned in spaced relation to the cathode in a direction away from the surfaces of the electrode pads. The apertured electrode may include a single slit-shaped aperture or a plurality of colinear apertures. The structure may also include a pair of spaced parallel filter plates whose surfaces are disposed in parallel relation to the longitudinal axis of the line cathode and in orthogonal relation to the surfaces of the electrode pads. The filter plates function to collimate the electron flow emitted from the cathode.

Abstract: An evacuated envelope has a rectangular display section and a gun section at one edge of the display section. The display section includes front and back walls which are generally rectangular, in closed spaced, parallel relation, and a plurality of spaced, parallel support walls between the front and back walls forming a plurality of parallel channels. The gun section extends across one end of the channels and includes therein gun structure which will direct electrons into the channels. In each of the channels is a beam guide which confines the electrons in a beam and guides the beam along the length of the channel. The beam guide also includes means for selectively deflecting the electron beam out of the guide at selective points along the guide so that the beam will impinge upon a phosphor screen along the inner surface of the front wall.

Abstract: The effects of oscillations of an electron beam traveling down a beam guide may be cancelled out by periodic switching of the electrical fields which confine the electron beam in the guide. The changing of the electrical fields periodically alters the phase of the electron beam so as to produce a net phase cancellation over a period of time.

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: A first die having a relief pattern is employed to provide predetermined shape and relative positioning for a first plurality of metal strips. A second die is similarly employed for a second plurality of metal strips Without removing the metal strips from the dies, the strips, still in predetermined shape and position, are bonded to opposing surfaces of an insulating substrate. The bonding process includes bringing the dies, and hence, the metal strips, into contact with the opposing surfaces of the insulating substrate. The bonding process may include the application of heat, pressure, and an electrical field across the bonding interfaces, e.g., anodic bonding.

Abstract: A gas laser tube has a spherical reflector at one end and a flat mirror at the other end. An acoustooptic modulator is attached to the flat mirror. The modulator is positioned so that the generated acoustic wave intersects the laser beam at the Bragg angle.