1042 results about "Optical control" patented technology

Embodiments of a switch are described. This switch includes input ports configured to receive signals (which include data) and output ports configured to output the signals. In addition, the switch includes switching elements and a flow-control mechanism, which is configured to provide flow-control information associated with the data to the switching elements via an optical control path. These switching elements are configured to selectively couple the input ports to the output ports based on the flow-control information. Furthermore, a given switching element in the switching elements is coupled to a given input port and a given output port via electrical signal paths that are configured to use proximity communication to communicate the data.

A device interface selectively acquires patient physiological parameter data. An acquisition processor acquires physiological data from a patient. A communication processor is coupled to an optical communication pathway for receiving a plurality of optical signals from a source. A conversion processor is electrically coupled to the acquisition processor and communication processor and converts a first optical power signal at a first frequency and received via the optical communication pathway using the communication processor, to a first electrical signal for providing power to said device 1interface. The conversion processor converts an optical control signal at a second frequency different from the first frequency and received via the optical communication pathway using the communication processor, to a second electrical signal for providing control data to the acquisition processor directing the acquisition processor to acquire at least one physiological parameter from a patient.

A foreign-particle detection system for use with an optical instrument having a transmissive window with a first side and a second side includes a radiation source to emit a radiation signal, a diffusing reflector to diffusively spread the radiation signal emitted by the radiation source over the first side of the transmissive window, a radiation detector to detect, at the second side of the transmissive window, the diffusively spread radiation signal transmitted by the transmissive window, and to generate a detected radiation signal based on the detected diffusively spread radiation signal, and a computation module communicatively coupled to the radiation detector to detect a presence of foreign particles on at least one of the first side or the second side of the transmissive window based on at least the detected radiation signal.

Method and apparatus for optically testing the quality of objects such as silicon wafers which have a circular peripheral edge, wherein light is directed onto the edge region of the object, and the light radiating from the object due to reflection, refraction and/or diffraction is detected by means of a measuring unit which produces an image from the received light. Defects on and/or in the object are identified from the produced image.

The invention relates to an optical reflection system with a reflection element for reflecting reconstruction light waves, an entry-side focal point, from which the reconstruction light waves come when they hit the reflection element, and an exit-side focal point, to which the reconstruction light waves propagate after being reflected from the reflection element. The invention further relates to a tracking system and a holographic projection system with such optical reflection system, and a corresponding holographic projection method. In order to achieve with such an optical reflection system an aberration correction and a tracking of the visibility region and a reconstruction larger than with prior art devices, the optical reflection system according to this invention comprises a deflection element with optically controllable deflection properties and a deflection control means for optically controlling the deflection properties of the deflection element which controls the position of at least the exit-side focal point of the optical reflection system.

A method and a system are presented for automatic optical control of at least one working parameter of a processing tool to be applied to a working area of a workpiece for providing certain process results. The at least one working parameter of the processing tool affects at least one parameter of the workpiece under processing. The processing tool has a preset value of the at least one working parameter prior to the processing of the workpiece. A measuring tool is applied to the workpiece prior to its processing by the processing tool for measuring the at least one parameter of the workpiece and generating measured data representative thereof. The measured data is analyzed with respect to the preset value of the working parameter and to the process results, so as to determine whether the preset value should be corrected for providing the certain process results when applying the processing tool to said workpiece. Upon detecting that the preset value should be corrected, calculating a correction value.

A luminare uses an indirect reflector system to harness the concentrated light from an array of LED luminaires and direct the lumens where needed. The luminare allows for optical control and little to no glare by re-focusing the concentrated light emitted from each LED luminaire on the reflector at desired angles required for the selected lighting. A satin finish on the reflector diffuses the LED lamp image brightness and increases uniformity of illumination on the ground.

A solar cell construction in a display device is provided. The photovoltaic conversion can be performed with high efficiency by the solar cell construction. The display device includes a front substrate and an opposing rear substrate, which are light-transmissive. The display device further includes an optical control layer, a solar cell layer and an insulating flattened layer. The optical control layer is disposed between the substrates, wherein images formed by the optical control layer are displayed on the outer side of the front substrate. The solar cell layer is disposed in a specific area of the major surface on the rear substrate, between the rear substrate serving as a base for supporting it and the optical control layer, and receives incident light coming from the external surroundings through the rear substrate. The insulating flattened layer is formed on the solar cell layer, wherein the optical control layer is formed on and supported by the insulating flattened layer.

A display device has a light blocking arrangement for selectively blocking light which has or would be emitted at large lateral angles. The display can be configured so that light reaching these elements is either allowed to reach the viewer or is blocked from reaching the viewer. This means that a public viewing mode can be chosen or a private viewing mode. The light blocking elements are controlled optically in order to simplify the construction and control.

The invention provides a device for measuring a thermal diffusivity. The device comprises an excitation light source, an optical control device, a vacuum heating furnace, a temperature controlling device, a temperature measuring device and a data acquiring and processing device, wherein the excitation light source generates excitation light beams; the optical control device is provided with an optical component group, a light beam mass spectrometer and an energy meter and regulates the energy of the excitation light beams through a replaceable optical element in the optical component group; a heating element for heating a sample is arranged in the vacuum heating furnace; the temperature controlling device is used for controlling the heating temperature of the vacuum heating furnace; the temperature measuring device amplifies a temperature rise signal of the sample measured by a detector through a pre-amplifier and transmits the amplified signal to the data acquiring and processing device; the data acquiring and processing device comprises a data acquiring system and a data processing system; the data acquiring system transmits all acquired data signals to the data processing system; and the data processing system analyzes and repeatedly and theoretically corrects the data signals. The device for measuring the thermal diffusivity designed by the invention has the advantages of reducing the measuring repeatability of the thermal diffusivity of a material to be less than 1 percent, lowering uncertainty of measurement, improving the level of thermal diffusivity measurement and laying foundations for the establishment of a standard thermal diffusivity device in China, the preparation of a standard thermal diffusivity substance and the establishment of a standard thermal diffusivity database.

A contact lens or phakic IOC lens is provided with a peripheral portion that has a power profile that provides optical control of peripheral vision images. Typically, the central portion of the lens is also provided with optical control. The power profile of the lens at the boundary of the central and peripheral portions meets certain boundary conditions that ensure that the lens provides a desired or selected vision correction. Because the peripheral portion of the lens provides optical control that defocuses the peripheral vision image relative to the retina, the lens can be used to prevent or inhibit growth of the eye, thereby preventing or inhibiting myopia or the effects of myopia.

An interventional device, e.g. a Vacuum Assisted Biopsy (VAB) needle, incorporating optical fibers such that biological tissue in a volume at a side of the interventional device can be substantially completely optically probed by optical spectroscopy. In a VAB embodiment, a plurality of optical fiber pairs connected to respective optical ports, are placed at opposite positions along the suction cavity, and they are readout subsequently allowing to make a map of the tissue properties along the place where the tissue will be cut by the VAB needle. Based on decision software in an optical console, it can be determined whether the tissue present in the cutting cavity is completely normal tissue or not, prior to actually performing the biopsy on the tissue. In this way a well defined end point for VAB is created. In one embodiment, the optical fibers are arranged in a wall structure of a thin sleeve which fits onto existing VAB needles, thus allowing the VAB needle to be upgraded with an optical probing capability.

PCT No. PCT/NO96/00150 Sec. 371 Date Dec. 22, 1997 Sec. 102(e) Date Dec. 22, 1997 PCT Filed Jun. 19, 1996 PCT Pub. No. WO97/00806 PCT Pub. Date Jan. 9, 1997A rotating connector or coupling device for interconnection between at least one fluid passage (9) through a submerged buoy (1, 2) and a pipe system on a floating vessel for the production of hydrocarbons, comprising a pair of cooperating, fluid-transferring swivel members in the form of a female member (3) and a male member (4) which may be introduced axially into or withdrawn from each other, the female member (4) being permanently fixed to the buoy (1, 2), and an electrohydraulic swivel (30) which is arranged on the top of the male swivel member (4) and comprises partly a slip-ring arrangement (37, 45) for the transfer of high electric power and electrical/optical control signals, and partly a number of hydraulic courses for the transfer of hydraulic signals. The female and male swivel members (3, 4) include cup-like housing members (60, 61) which are insertable into each other and which, at their lower ends, have coupling discs (62, 63) with cooperating connector parts (81, 82; 83, 84) forming past of respective underwater couplers (72, 73), the housing members (60, 61) being arranged to be filled with water, for submerged operation of the underwater couplers (72, 73).

Described is a method of reducing transmitter error in an optical communications channel. An optical signal transmitted from an optical transmitter that has impairment due to transmitter error is processed to generate a digitally-equalized signal. A nonlinear characteristic of the digitally-equalized signal that relates to the transmitter error is determined. An optical control signal comprising data that are based on the nonlinear characteristic is transmitted to the optical transmitter. The optical transmitter modifies a transmitter parameter in response to the optical control signal to change the nonlinear characteristic and thereby reduce the impairment.

Disclosed is an optical control type phased array antenna apparatus having an array antenna of antenna elements. An optical signal processor optically processes input high-frequency signals, and outputs optically processed signals including signal components having phases corresponding to directions in which radio wave signals come and having frequencies equal to those of the input high-frequency signals. Then, each frequency converter mixes a received signal with the optically processed signal in correspondence with the antenna element, and outputs a frequency-converted signal having a frequency of a difference between a frequency of the received signal and a frequency of the optically processed signal. Further, a combiner combines the frequency-converted signals. When reference signals each having a frequency that differs from the frequency of the corresponding radio wave signal by an intermediate frequency are inputted to the optical signal processor as the input high-frequency signals, intermediate frequency signals having the intermediate frequencies and corresponding to the radio wave signals are outputted as received signals from the combiner.

An alarm control method allowing easy localization of a failure in an optical communications network is disclosed. An optical signal from a signal transmitter is monitored to produce an alarm information signal indicating whether the optical signal is normally inputted. The optical signal and an optical control signal including the alarm information signal is multiplexed and transmitted to an optical receiver through an optical transmission line. When receiving the optical control signal and the optical signal from the optical transmitter, the optical receiver determines whether the optical signal is normally received. When not normally received, transmission of a receiver-side alarm signal to a management system is controlled depending on whether the alarm information signal indicates that the optical signal has been normally inputted at the optical transmitter.

The “Smart Tool” includes a “Smart Tool Probe” and two processing modules. The Smart Tool Probe is a hand held, wired or wireless, device that a surgeon utilizes for interrogating and identifying a tissue site, such as the entrance to a pedicle. The processing units, an Electro-Optical Control (EOC) Module and a CDS Module, provide control and display capabilities enabling real-time tissue site (such as vertebra bone) interrogation. The Smart Tool Probe utilizes a system of optical fibers that carry the interrogating optical signal sent by the light source(s) and the reflected optical signal back to the optical receivers. The light source(s) and light receivers are located in the EOC Module. The data received from the EOC Module are processed and converted into an image which is displayed on the screen in real-time. The software installed on the machine allows the surgeon to adjust/enhance the image properties to suit the selected requirements. This mode of operation provides interactive image sharpening (to adjust image sharpness), threshold control (to adjust image contrast), segmentation (to delineate the density map in the image), and image calculus (to pin-point the center of a particular region in the image).

A 2D/3D switchable display device comprising a display module, an optical control module and a driving module is disclosed. The optical control module comprises a plurality of optical controlling elements. The display module is disposed opposite to the optical control module and thereby relative information is generated. The driving module provides a corresponding pixel data matrix to the display module based on the optical controlling elements and the relative information.

The invention discloses an intersection signal optical control method in an environment of Internet of vehicles. A signal timing plan is optimized by combining vehicle state information acquired at a signal intersection in real time, so that the delay time that a vehicle passes through the intersection is shortened. The method disclosed by the invention realizes an actual application of the technology of Internet of vehicles at the signal intersection, thereby favorably improving the traffic efficiency at the signal intersection.