Abstract: An apparatus is provided for assisting in affixing a screen protector to a display of an electronic device. The apparatus includes a base including a platform configured to support the electronic device. The apparatus includes a lid configured to cover at least a portion of the base and the supported electronic device. The lid includes an aperture.

Abstract: A munition and method capable of producing real-time selectable effects ranging from unrestricted to low collateral damage. The munition is capable of a directionally focused fragment pattern and limited lethality/damage effects.

Abstract: A multi-channel laser ROS scanner for simultaneously scanning laser beam components across multiple lines of a photosensitive surface including apparatus for determining deviations in the position of the surface from a desired position due to undesired photosensitive surface velocity variations whereby an error correction signal can be generated, and a TIR modulator having a plurality of interdigitated, addressable drive electrodes. The total number of drive electrodes N.sub.t of the TIR modulator is greater than the collective number of drive electrodes N.sub.s needed to provide the desired pixel resolution for all of the simultaneously scanned lines. When the photosensitive surface is maintained at a desired velocity, such velocity being determined in a conventional manner by system parameters, the surface is correctly positioned and N.sub.

Abstract: An optical data recording system in which during recording the image of the acoustic pulse at the writing surface is made to move at the same relative velocity with respect to the recording medium whereby motion blur is minimized or reduced. The writing beam, such as that generated by a laser, is incident on acousto-optic device (such as a Bragg cell) and may be diffracted (deflected) at an angle determined by the frequency of a source applied to the device. By selecting the system magnification between the device and the recording medium such that the magnification, in one embodiment, is substantially equal to the ratio of the velocity of the recording medium to the velocity of the sound wave in the acousto-optic device; the image of the acoustic pulse follows the surface of the recording medium and permits imaging of the video signal to the recording medium without blurring.

Abstract: A Fresnel zone plate lens in the form of a plurality of electrodes is provided on the transducer surface of a Bragg acousto-optic device (modulator or deflector). The thickness of the electrodes decrease away from the center electrode, the spacing between electrodes also decreasing as the electrodes are spaced from the center electrode. One end of each electrode in the electrode is connected to common the other end of each electrode being connected to a voltage level in a manner such that the voltage applied to adjacent electrodes are 180.degree. out of phase.

Abstract: A technique for adjusting the laser beam in a laser printing system in a simplified, inexpensive manner. The system includes an acousto-optic modulator having a transducer associated therewith. The electronic video stream is mixed with the signal generated by the carrier oscillator, the mixer output being amplified and then applied as a driver signal to the transducer. Means are provided to allow the frequency of the oscillator to be adjusted such that the position of the deflected beam is correspondingly adjusted until the unbalance of the laser beam power at the recording medium due to tolerance build-up between the system components is minimized thereby significantly extending the life of the laser.

Abstract: Apparatus for converting an electronic signal pattern which comprises a plurality of electronic signals into an image comprising a line of light, with a light intensity profile determined by the electronic signal pattern to achieve a visible display of the signal pattern. A TIR (total internal reflection) type of electro-optic device which has each electrode individually addressed is utilized. To record the displayed signal pattern, the electro-optic device is imaged as a line onto a recording plane so that each individually addressed element of the electro-optic device acts as a light modulator or gate for one picture element along the recording line.

Abstract: A scanner using spatial modulation of the light profile incident upon an acousto-optic modulator in which the deflector clear aperture window is decentered from the optical axis of the system so that the light profile falls just within one edge of the deflector clear aperture window. One advantage of the decentering of the optical alignment is increased system frequency response due to transmission of only one sideband of the light profile, which in terms of a printing systems means increased resolution. Loss of laser light due to decentering of the optical alignment can be minimized by using a single sideband signal as the modulator drive signal instead of the conventional double sideband drive signal. Distortion of the light profile due to decentering of the optical alignment can be reduced by predistorting the single sideband drive signal supplied to the acousto-optic modulator.

Abstract: Method and apparatus for improving the efficiency and resolution of laser scanning systems using a multi-faceted rotating polygon as the scanner device. In particular, an acousto-optic Bragg cell is utilized as an active optical element to both modulate, in response to an electrical input signal, and deflect an incident laser beam so that the modulated beam is caused to follow, or track, one facet of the scanner during a complete scan and to shift to the adjacent facet for the following scan. The scanning system is operated in a manner wherein during recording the image of the acoustic pulses at the surface of a recording medium are made to move at the same relative velocity, in the opposite direction, as the velocity of the laser recording, or write beam whereby imaging of the input electrical signal on the recording medium surface is accomplished without blurring.

Abstract: Method and apparatus for improving the efficiency of laser scanning systems using a multi-faceted rotating polygon as the scanner device. In particular, an acousto-optic Bragg cell is utilized as an active optical element to both modulate and deflect an incident laser beam so that the modulated beam is caused to follow one facet of the scanner during a complete scan and to shift to the adjacent facet for the following scan.