Abstract: A lider countermeasure receives an interrogating laser beam and returns a beam having a distorted phase point such that the interrogating system generates a false angular portion for the returned radiation. The false phase front is achieved by independent manipulations of the amplitude and phase of the returned signal.

Abstract: An optical processing system for controlling a deformable mirror employs iterative constrained deconvolution of an actuator influence function with a set of optical representations of spatial impulse functions related to the settings of the actuators. An input optical beam is first transformed to a beam having a uniform phase amplitude proportional to the phase of the incoming beam at corresponding locations.

Abstract: A three-dimensional display system for co-spatial point display of information emanating from at least two biophysical sources. The system includes a rigid, transparent three-dimensional structure within which is provided co-spatial visual display elements arranged in a three-dimensional geometry at regular coordinate addresses. Information input terminals, including terminals for biological interface, are provided. Also furnished is logic for assigning a three-dimensional coordinate address, at uniform time intervals, for the informational input from each of the biological sources. Each of the display elements are energized in a fashion that is input-responsive to the coordinate addresses corresponding to the system inputs. The system is further provided with detectors for alerting the users to spatial and temporal coincidence of energized visual elements resultant from simultaneous inputting of like coordinate addresses by the biophysical source.

Abstract: A light projection tag system provides for the detection of spatially coincident light patterns projected by competing players on a gaming surface. Each player is equipped with an optical transceiver with a field-of-view that is geometrically coincident with the light pattern projected from the transceiver. Each player's transceiver can detect when an opponent's light pattern, also projected on the gaming surface, enters this field-of-view thereby achieving a tag. Detection methods include the use of modulated visible or infrared light. Various embodiments of the system include automatic targets and projected gaming mazes.

Abstract: An input, high frequency signal is applied as a modulating input to a cavity positioned about the electron beam source of a traveling wave tube (TWT) amplifier. The TWT's electron beam is appropriately deflected, in a raster manner, over pixel areas of a KDP crystal plate. This action deposits, in each pixel area, charge which represents analog samples of the microwave waveform. The KDP crystal plate, together with an optical analyzer system, forms a Kerr cell modulator array. The charge deposited at the pixel sites causes associated variations in the index of refraction in the KDP crystal. When a reading beam of collimated, polarized light is raster scanned over the KDP plate, the angle of polarization of the beam is modified at each pixel site. The modified beam is reflected, passes through an analyzer section to a detector and then to a transmitter.

Abstract: A probe for measuring the temperatures within a molten metal pool at various vertical levels within the pool is disclosed. The probe includes a plurality of vertically spaced thermocouples protruding from the surface of a refractory block. Also disclosed is a support mechanism for positioning and maintaining the temperature probe within the molten metal pool.

Abstract: A light projection tag game requires the overlap of player projected images on a gaming surface. Each player is provided with an optical transceiver which has a receiver with a narrow field of view that is geometrically coincident with the light beam projected from the transceiver. Each player's transceiver can detect when an opponent's image which is also projected on the gaming surface enters this field of view thereby achieving a tag. Receiver methods use either signal transients or infrared modulation. Various embodiments include automatic targets, automatic game control and projected gaming mazes.

Abstract: A range processor for airborne distance measuring equipment in which coherency of reply signals from the ground based DME station is determined by incrementing the contents of storage locations of a random access memory device for each reply signal according to the time of reception of the reply signal and for decrementing the contents of the storage location if no reply signal is received. Whenever the contents of a storage location exceeds a threshold value a range gate is generated so that the next reply received within the range gate causes the time of reception of the reply to be stored as range data.