Abstract: A wireless communication system for minimizing interference from physical limitations and the environment that includes at least a pair of optical links wherein each link includes a steered-beam transmitter assembly (T1) and a steered-beam receiver assembly (R2). The steered-beam transmitter assembly (T1) couples a data signal to be transmitted and a first control signal at a first wavelength. The steered-beam transmitter assembly (T1) includes a first micromirror assembly (26) for directing the transmitted data signal. The steered-beam receiver assembly (R2) couples to receive the data signal having the first control signal coupled thereto and simultaneously generates and transmits a second control signal at a second wavelength. The steered-beam receiver assembly (R2) includes a second micromirror assembly (26′) for directing the second control signal.

Abstract: A wireless communication system for minimizing interference from physical limitations and the environment that includes at least a pair of optical links wherein each link includes a steered-beam transmitter assembly (10) and a steered-beam receiver assembly (50). The steered-beam transmitter assembly (10) couples a data signal to be transmitted and a first control signal. The steered-beam transmitter assembly (10) includes a first micromirror assembly (22) for directing the transmitted data signal. The steered-beam receiver assembly (50) couples to receive the data signal having the first control signal coupled thereto to generate a second and a third control signal. The steered-beam receiver assembly (50) includes a second micromirror assembly (62) for directing the received data signal. The second and third control signals position the first and second micromirror assembly (22, 62), respectively, such that the data signal is centered in the field of view of the steered-beam receiver assembly (50).

Abstract: A circuit which compensates for the effects of drift that occur during the operation of a cathode ray tube because of temperature changes or aging and which produces changes in intensity of the picture on the cathode ray tube by sensing the intensity changes and varying the bias on the second grid of the cathode ray tube to restore the desired intensity.

Abstract: Lens arrangements for integrated circuits having a plurality of optical transducers is provided. A method for prefabricating such an arrangement is also disclosed.

Abstract: Range finding equipment for use with optical systems utilizing a small number of radiation detectors positioned to receive radiation in first and second patterns from a remote object. The sum of the logarithm of the ratio of a first and second detector and the logarithm of the ratio of a third and fourth detector is compared with the difference between the logarithm of the ratio of the first and second detector and the logarithm of the ratio of the third and fourth detector to determine which has the greatest absolute magnitude. The signal of greatest magnitude is selected to operate the range finding circuitry.

Abstract: Apparatus for use with range finding equipment in which the radiation from a remote object may be too small to provide for proper operation. A signal which is a function of the logarithm of the ratio of the output of a first and second detector and a signal which is the function of the logarithm of the ratio of a third and fourth detector is compared with a reference signal. If the reference signal is larger than both of the other signals, the system operates to focus at a predetermined position.

Abstract: A support for a camera automatic focusing system has two identical plates that form top and bottom covers of the support. The top plate has a plurality of spaced openings that are in alignment with identical spaced apart openings formed in said bottom plate. A pair of shafts are positioned to extend through a different pair of the aligned openings in the plates. A separate image transferring mirror and a focusing lever is mounted on each shaft between opposing flat surface portions of the cover plates. A separate washer is mounted about each of said shafts between a lower end of said mirror and its associated focusing lever. An image receiving module having a height greater than the combined height of the mirror and thickness of the washer allows each focusing lever to be moved freely for angular adjustment of the associated mirror. The module has aligned spaced apart bosses on its surfaces adjacent the cover plates.