Schweitzer Engineering Laboratories, Inc.

Microvision, Inc.

Witold R Teller

Steven A McMahon

Mark O Freeman

James R Kesler

Luther S Anderson

Alban N Lescure

Douglas A Park

Donald C Hicks

Edmund O Schweitzer, Iii

Laurence Virgil Feight

Markus Stefan Duelli

Mark J Bosold

Luthor S Anderson

An imaging system (), such as a scanned laser projection system, includes one or more laser sources () configured to produce one or more light beams (), and a light modulator () configured to produce images () from the light beams (). A polarization diversity element (), which can be manufactured from a birefringent material or from a polymerized liquid crystal layer, is disposed within the imaging system (). The polarization diversity element () is configured to alter the polarization of an incident beam to create a transmitted beam comprising diverse polarization patterns, thereby reducing speckle in projected images.

Laser projection source with polarization diversity element for speckle reduction

A system for communicating information between a detection device and a wireless device is provided. The system generally includes a detection device adapted to monitor a condition related to a power system. A radio interface unit is in communication with the detection device via a communication member. A wireless device is further provided which is in radio communication with the radio interface unit such that the detection device communicates information to the wireless device through a radio interface unit. The system's components are further adapted to endure harsh conditions (e.g., prolonged exposure to water).

System and method for communicating power system information through a radio frequency device

An image producing system () delivers images () having reduced speckle by employing one or more drive circuits () that deliver both a direct current drive signal () and an alternating current drive signal () to one or more lasers (). Specifically, an alternating current drive circuit () is used in conjunction with a direct current drive circuit () to modulate a drive signal. The modulation can be at a frequency of between 400 MHz and 600 MHz. When lasers, such as the red laser () or the blue laser () of a multi-laser system are modulated in such a fashion, their emitted spectral widths () greatly expand, thereby reducing speckle in projected images ().

Projection system using high-frequency drive modulation to reduce perceived speckle

A wireless communications system for viewing and modifying memory locations within a power system device is provided including a wireless device and a power system device. The wireless device includes an input mechanism adapted to accept input from a user indicating a memory location the user wishes to view; a first radio frequency transmitter for transmitting a first signal including the memory location within the power system device the user wishes to view; and a first radio frequency receiver for receiving a second signal. The power system device includes at least one randomly accessible memory location and a processor coupled to at least one randomly accessible memory location; a second radio frequency receiver coupled to the processor and a second radio frequency transmitter coupled to the processor for receiving the first signal. The processor retrieves the value of the memory location included within the first signal and activates the second radio frequency transmitter to transmit a second signal including the value of the memory location. The value of the memory location may be a command or control that is executed by the power system device.

Faulted circuit indicator monitoring device with wireless memory monitor

A system is provided for adjusting settings of a power system device. In one embodiment, the setting adjusted is an identification setting of the power system device. The system generally includes an actuator having a select arrangement of magnets. A magnetic field sensor is provided for sensing the select arrangement of magnets. A microprocessor is coupled to the magnetic field sensor such that upon sensing the select arrangement of magnets by the magnetic field sensor, the microprocessor establishes an identification setting based upon the select arrangement. The various embodiments of the present invention provide an apparatus and system for adjusting settings of power system devices in harsh conditions, such as persistent in water.

Apparatus and system for adjusting settings of a power system device using a magnetically coupled actuator

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Pullman, WA, United States of America

Witold R Teller