Abstract:
A scanning system which utilizes a resonant mechanical oscillator, such as a galvanometer, to scan a laser beam across a surface of a medium responsive to said laser beam. The laser beam scan velocity across the surface normally would vary sinusoidally because of the resonant nature of the drive system. The data flow, or bit density, of information to be recorded on or read out from the surface, would have a corresponding sinusoidal variation. In order to compensate for this, a grating is provided adjacent the galvanometer and a second laser beam is simultaneously incident on the mirror portion of the rotating galvanometer. As the galvanometer is caused to oscillate, two scanning beams are generated, one scanning the surface and the other scanning across the grating. The grating is arranged to provide a plurality of timing or clocking pulses which are generated in response to the scanning thereof by the laser beam whereby in the writing mode, the writing laser beam is accurately clocked as it is modulated and in the read mode, the timing pulses matches the bit density of the output data, causing the data to be entered into a storage device at the proper time sequence.
Abstract:
A light emitting diode display apparatus is disclosed wherein a plurality of diodes mounted in a row on a vibrating member are used to create a display. The light emitting diode display may be used as an oscilloscope to display various types of signals. Alternatively, the diode display apparatus may be used in conjunction with a camera system wherein a similar row of radiant energy sensors, such as photocells, are mounted on a vibrating member synchronized with the vibrating member of the display in order to sense the subject matter to be displayed. The camera-display system may be connected together by means of lines or coupled together by means of a telephone system.The purpose of the above abstract is to provide a non-legal technical statement of the disclosure of the contents of the instant patent application and thus serve as a searching-scanning tool for scientists, engineers and researchers. Accordingly, this abstract is not intended to be used in understanding or otherwise comprehending the principles of the present invention hereinafter described in detail, nor is it intended to be used in interpreting or in any way limiting the scope or fair meaning of the claims appended hereto.
Abstract:
A panel-type multichannel instrument comprises in each measuring channel identical measuring assemblies. These measuring assemblies comprise rotating mirrors capable of being rotated under the effect of measured variables. A device for producing on a common scale an optical indicator is provided such that the indicator is formed by light beams reflected by the rotating mirrors. Auxiliary mirrors are interposed in the path of the light beams reflected by the rotating mirrors between the common scale and the rotating mirrors such that the images produced by the auxiliary mirrors lie on a common straight line in the scale while the path lengths of the light beams from the rotating mirrors to any selected horizontal location on the scale are equalized.
Abstract:
A deflection apparatus deflects a light beam in accordance with the characteristics of energizing signals to provide a trace of those signal characteristics on a display medium. The assembly includes a plurality of suspension galvanometers each having a coil responsive to an associated one of the signals to deflect a mirror positioned in the path of the light beam which in turn deflects the light beam. The galvanometers are suspended on a rigid supporting structure which is self-aligning. Pole pieces have a plurality of teeth which define secondary air gaps and provide a substantially constant, concentrated flux field for each of the coils. A printed circuit board cooperates with cover members to form a dust free enclosure.
Abstract:
A vibrating coil assembly for mirror galavanometers, light-beam oscillographs and the like having a mirror and a moving coil suspended by taut wires or ribbons. The ends of the wires nearest the moving coil are provided with eyes and a mounting wire is brought through the eyes and a window in the moving coil to form a figure 8 and clamp the moving coil within it. A stiffening tube for receiving the mirror is pushed over a section of the wire adjacent to one eye. The stiffening tube is cast together with the moving coil and the mounting wire by means of a setting compound.