34results about How to "Light signal" patented technology

A method is disclosed for evaluating isolated and aperiodic structure on a semiconductor sample. A probe beam from a coherent laser source is focused onto the structure in a manner to create a spread of angles incidence. The reflected light is monitored with an array detector. The intensity or polarization state of the reflected beam as a function of radial position within the beam is measured. Each measurement includes both specularly reflected light as well as light that has been scattered from the aperiodic structure into that detection position. The resulting output is evaluated using an aperiodic analysis to determine the geometry of the structure.

A light emitting diode (LED) warning signal light, the warning signal light comprising a plurality of light sources constructed and arranged with a reflector or cullminator, the LED light source being in electrical communication with a controller and a power supply, battery, or other electrical source. The warning signal light provides various colored light signals for independent use or use by an emergency vehicle. These light signals may include a strobe light, revolving light, an alternating light, a flashing light, a modulated light, a pulsating light, an oscillating light or any combination thereof. Additionally, the warning signal light may be capable of displaying symbols, reverse characters, or arrows. The controller may further be adapted to regulate or modulate the power intensity exposed to the illuminated LED's to create a variable intensity light signal.

A light emitting diode (LED) warning signal light, the warning signal light comprising an array of light sources configured on a light support and in electrical communication with a controller and a power supply, battery, or other electrical source. The warning signal light provides various colored light signals for independent use or use by an emergency vehicle. These light signals may include a stationary light, strobe light, revolving light, an alternating light, a flashing light, and an oscillating light. Additionally, the warning signal light may be capable of displaying symbols, reverse characters, or arrows. Preferably, rotating and oscillating light signals are produced by sequentially illuminating columns of LED's on a stationary light support. However, the warning signal light may also be rotated or oscillated via mechanical means. The warning signal light may also be transportable for easy connection to a stand such as a tripod for electrical connection to a power supply as a stand-alone warning signal. The controller may further be adapted to regulate or modulate the power intensity exposed to the illuminated LED's to create a variable intensity light signal.

The invention relates to an optoelectronic module for coupling light signals into and out of an optical waveguide. The module has a carrier having at least a first side, a light transmitter for emitting light signals, which is arranged on the carrier, a receiver for detecting light signals, which is arranged on the carrier, and a beam-shaping element for coupling light signals of the laser diode out of the module and for coupling light signals into the receiver. The light transmitter and the receiver are both arranged on the first side of the carrier, a shielding means serving to shield the receiver from optical and/or electrical interference signals. As a result, a bidirectional optoelectronic module is provided which is distinguished by signal conversion that is as precise as possible and, at the same time, is comparatively cost-effective in terms of production.

The invention provides a method for measuring light scattered on a sample in a medium, in particular a fluid medium, that comprises the following steps: providing a rotatably arranged measuring cell with a substantially circular cross-section in a plane perpendicular to the axis of rotation for receiving the medium and the sample, rotating the measuring cell, preferably at least once by substantially 360°, about the axis of rotation, in particular by means of a drive, emitting a laser beam by means of a laser onto the sample located within the measuring cell in the plane perpendicular to the axis of rotation at different angles of rotation of the measuring cell, the measuring cell maintaining its position in the direction of the axis of rotation, detecting scattered light signals by means of at least two detectors arranged in a circle and concentrically to the centre of rotation of the measuring cell and fixed within set, different angular ranges at different angles of rotation of the measuring cell, and determining a corrected signal value for each detector on the basis of the scattered light signals detected at different angles of rotation of the measuring cell for each detector. Furthermore, the invention provides an apparatus for measuring light scattered on a sample according to the method comprising a laser, a measuring cell and a detector.

A display panel capable of fingerprint identification includes a base substrate, a TFT layer, a pixel unit, and a dummy pixel. The base substrate includes a display area and a non-display area. The dummy pixel is formed on the TFT layer where the pixel unit is arranged as well, and distributed in the non-display area. The non-display area comprises a fingerprint identification cue area configured to transmit fingerprint information to a fingerprint identification module. The fingerprint identification module is arranged on one side of the TFT layer facing away from the dummy pixel. When a finger touches the fingerprint identification cue area, a light is emitted from the fingerprint identification cue area to the finger. The fingerprint identification module is configured to implement fingerprint identification based on the light that is reflected from a surface of the finger and passes through a gap between the dummy pixels.

Novel light switches and attenuators are disclosed. In one form of the invention, a novel 1×2 switch is formed by positioning a moveable cantilever mirror having an opening intermediate three fiberoptic lines. In another form of the invention, a novel n×n switch is formed by positioning a moveable cantilever mirror having n openings intermediate n sets of three fiberoptic lines. In still another form of the invention, a novel variable optical attenuator is formed by incrementally positioning a moveable cantilever mirror having an opening intermediate a set of three fiberoptic lines.

The present invention relates to an infrared stealth element using a dual band perfect absorption metamaterial. The infrared stealth element includes: a first metal layer; an insulator layer formed on an upper part of the first metal layer; and a second metal layer formed on an upper part of the insulator layer. The second metal layer includes at least one among a metal ring and a metal dot.

According to one aspect, the invention relates to a device for transporting and controlling light beams for endo-microscopic imaging without a lens on the distal side comprising a single-mode optical fibre bundle (40) on the distal side, wherein each single-mode optical fibre is intended to receive an elementary light source and to emit a light beam at a distal end; a single-mode optical fibre section (50) arranged at the distal end of the optical fibre bundle and intended to receive the light beams emitted by the single-mode optical fibres of the optical fibre bundle; an optical phase control device arranged on the side of the proximal end of the single-mode optical fibres. The optical phase control device comprises at least one spatial light modulator (30) adapted to apply a phase shift to each of the elementary beams and control means (60) for controlling the spatial light modulator allowing application of a phase shift to each of the elementary beams to form an illumination beam with a determined phase function at the distal end of the multimode optical fibre section (50).

A method is provided for controlling the operation of a rear light set of a tractor of a vehicle, the rear light set including a plurality of rear lights, the vehicle further including a trailer which can be pivotably connected to the tractor about a substantially vertical axis and which includes the same set of rear lights. The method including: detecting whether a trailer is connected to the tractor; detecting a steering angle of the vehicle; if a trailer is detected to be connected to the tractor and if there is at least one activated rear light in the trailer rear light set: in case the steering angle of the vehicle is below a predetermined threshold, deactivating at least the rear light(s) of the tractor rear light set which is (are) of the same type as the activated rear light of the trailer rear light set; in case the steering angle of the vehicle is above the predetermined threshold, in a so-called manoeuvring operation, activating at least the rear light of the tractor rear light set which is of the same type as the activated rear light of the trailer rear light set and which is located outside of the turn.

A detecting device detects at least one battery characteristic of at least one battery cell of a battery plane of a battery stack. A carrier has at least one electrical lead element and at least one contact element having a contact section for contacting a mating contact section of the at least one battery cell. The contact element has a sensor section for detecting the at least one battery characteristic of the battery cell. The sensor section is connected by data-communicating to the at least one line element for forwarding the at least one detected battery characteristic. Furthermore, the invention relates to a battery stack having at least one battery plane with at least one battery cell and a detection device.

Provided herein are methods and systems for detecting the presence of absence of a target-nucleic acid sequence, including SARS-COV2.

A switch device includes a regulating circuit, a loading unit, a battery, an alternating voltage detecting loop and a voltage-increasing loop. The regulating circuit serves to regulate an inputted alternating voltage. The loading unit is connected to an output terminal of the regulating circuit, and operates when receiving a voltage outputted from the regulating circuit. The battery is connected to an output terminal of the loading unit. The battery keeps charging while the loading unit is working. The alternating voltage detecting loop is respectively connected to the regulating circuit and the battery. The voltage-increasing loop is respectively connected to the alternating voltage detecting loop and the battery. When the alternating voltage detecting loop works, the voltage-increasing loop generates oscillation to increase the power of the nickel hydrogen battery and drive the loading unit.