Abstract: The disclosed technology relates to a lighting strobe system that utilizes an ambient light sensor to detect an intensity and color temperature of ambient light to set or adjust an intensity and color temperature of light to be emitted by a first array of LEDs and a second array of LEDs. The first array of LEDs may include warm color temperature LEDs having a color temperature of 2400-4000 Kelvin. The second array of LEDs may include cool color temperature LEDs having a color temperature of 4000-8000 Kelvin.
Abstract: The invention provides a circuit for LED illumination driving current linear adjustment and dimming control. The circuit for LED illumination driving current linear adjustment and dimming control includes AC power supply module, LED module, drive IC, dimming control module and linear current adjustment Module. The linear current adjustment module may control to reduce current flowing through LED module when input voltage is increased, to achieve balance of input power and improve linear adjustment rate thereof; and the dimming control module may alter the change of an internal reference voltage of the drive IC by external input voltage change, thereby realizing the change of the LED module current, cooperating with a holding current driving part, opening and closing a path for the holding current; therefore, the circuit can be applied to triac dimming applications, and the structure is compatible with 0-10V and PWM driving, thereby improving applicability.
Abstract: A luminous intensity compensator, comprising a light source; a sensor, configured to receive sensor information representing a position of the light source, and to output sensor data representing the position of the light source; one or more processors, configured to determine from the sensor data a distance between the light source and a reference point; determine a loss factor of a wavelength based on the determined distance between the light source and the reference point; determine a compensated luminous intensity to yield a target luminous intensity of the wavelength after luminous intensity reduction due to the loss factor; and output control data to control the light source to emit the wavelength at the compensated luminous intensity.
Abstract: A substrate treating apparatus includes a chamber having a space therein in which a substrate is treated, a support unit that supports the substrate in the chamber, a gas supply unit that supplies gas into the chamber, and a plasma generation unit that excites the gas in the chamber into a plasma state. The plasma generation unit includes a high-frequency power supply, a first antenna connected to one end of the high-frequency power supply, a second antenna connected with the first antenna in parallel, and a current divider that distributes electric current to the first antenna and the second antenna. The current divider includes a first capacitor disposed between the first antenna and the second antenna, a second capacitor connected with the second antenna in parallel, and a third capacitor connected with the second antenna in series. The second capacitor and the third capacitor are implemented with a variable capacitor.
August 2, 2019
Date of Patent:
March 24, 2020
Semes Co., Ltd.
Ogsen Galstyan, Young-Bin Kim, Jamyung Gu, Jong-Hwan An
Abstract: A lighting system includes a controlling device and a lighting device. The controlling device is configured to receive an electrical signal from mains electricity, enter a transition mode upon receiving a tuning signal, and enter a normal mode after a predetermined period of time has elapsed since a latest receipt of the tuning signal. The controlling device is further configured, in the normal mode, to continuously output the electrical signal as a control signal to the lighting device, and in the transition mode, continuously output a modified signal as the control signal to the lighting device.
Abstract: A method for controlling a color temperature of light emitted by a plurality of light-emitting diodes (LEDs) comprises steps of a controlling device entering a transition mode upon receiving a tuning signal from an input device, the controlling device generating a modified signal based on a received electrical signal according to the tuning signal, the controlling device outputting the modified signal to a lighting device, and the controlling device entering a normal mode once a predetermined period of time has elapsed since the last time the controlling device receives the tuning signal.
Abstract: A micro light-emitting diode driving circuit including a micro light-emitting diode, a first driving transistor, and a second driving transistor is provided. The first driving transistor receives a first driving voltage from a first driving voltage source, and is electrically connected to the micro light-emitting diode and a low voltage source. The second driving transistor receives a second driving voltage from a second driving voltage source, and is electrically connected to the micro light-emitting diode and a low voltage source. One terminal of the first driving transistor and one terminal of the second driving transistor are electrically and separately connected to one end of the micro light-emitting diode, and a lateral length of the micro light-emitting diode is less than or equal to 50 ?m.
Abstract: Circuits, methods, chambers, systems, and computer programs are presented for processing wafers. A wafer processing apparatus includes top and bottom electrodes inside a processing chamber; a first, second, third, and fourth radio frequency (RF) power sources; and one or more resonant circuits. The first, second, and third RF power sources are coupled to the bottom electrode. The top electrode may be coupled to the fourth RF power source, to electrical ground, or to the one or more resonant circuits. Each of the one or more resonant circuits, which are coupled between the top electrode and electrical ground, include a tune-in element operable to vary a frequency-dependent impedance presented by the resonant circuit. The wafer processing apparatus is configurable to select the RF power sources for wafer processing operations, as well as the connections to the top electrode in order to provide plasma and etching uniformity for the wafer.
Abstract: An LED device for use with an AC voltage power source configured such that at least one LED emits light during a positive phase of power provided from an AC power supply and at least one LED emits light during the negative phase of power provided from an AC power supply. The LED device includes a first power connection lead and a second power connection lead, both leads capable of being connected to and receiving power from an AC power supply.
June 17, 2019
Date of Patent:
February 25, 2020
Lynk Labs, Inc.
Michael Miskin, James N. Andersen, Robert L. Kottritsch
Abstract: A white light emitting device or LED-filament comprises: a solid-state light emitter (LED) operable to generate excitation light; a first phosphor associated with the solid-state light emitter to generate light with a peak emission wavelength in a range 500 nm to 575 nm; and a second phosphor associated with the solid-state light emitter to generate light with a peak emission wavelength in a range 600 nm to 650 nm, wherein a percentage decrease in conversion efficiency corresponding to an increase in excitation light photon density exhibited by the second phosphor is larger than a percentage decrease in conversion efficiency corresponding to the same increase in excitation light photon density exhibited by the first phosphor.
Abstract: An LED lighting system having at least one LED circuit and at least two circuits or drivers capable of receiving an AC voltage at a first frequency and having an output capable of driving the at least one LED circuit, wherein the output of each circuit or driver capable of driving the at least one LED circuit is provided to the at least one LED circuit through a circuit or sensor capable of permitting only a single output from the at least two circuits or drivers be provided to the at least one LED circuit.
Abstract: An LED driver includes a constant current circuit for supplying a constant current to a light-emitting portion composed of LEDs, a main transistor inserted serially between the light-emitting portion and the constant current circuit, a sub transistor connected to the node between the constant current circuit and the main transistor, and a control circuit. The LED driver drives the main transistor with pulses to make the light-emitting portion emit light in pulses. The control circuit, before turning on the main transistor, turns on the sub transistor to pass the constant current in the constant current circuit via the sub transistor, and, when turning on the main transistor, turns off the sub transistor.
Abstract: A method, apparatus, and system for automating detection and avoidance for an aircraft. A process activates a set of lamps visible on an exterior of an aircraft to emit light. The process modulates an intensity of light from the set of lamps at a set of frequencies that is detectable by a remote collision avoidance system in a remote aircraft during flight. The light from the set of lamps at the set of frequencies is perceived as continuous by a person looking at the aircraft in a sky, reducing visibility of the aircraft in the sky.
Abstract: A radio frequency power system includes a master RF generator and an auxiliary RF generator, wherein each generator outputs a respective RF signal. The master RF generator also outputs a RF control signal to the auxiliary RF generator, and the RF signal output by the auxiliary RF generator varies in accordance with the RF control signal. The auxiliary RF generator receives sense signals indicative of an electrical characteristic of the respective RF signals output by the master RF generator and the auxiliary RF generator. The auxiliary RF generator determines a phase difference between the RF signals. The sensed electrical characteristics and the phase are used independently or cooperatively to control the phase and amplitude of the RF signal output by the auxiliary RF generator. The auxiliary generator includes an inductive clamp circuit that returns energy reflected energy back from a coupling network to a variable resistive load.
May 9, 2018
Date of Patent:
January 28, 2020
MKS Instruments, Inc.
Aaron T. Radomski, Ky Luu, Larry J. Fisk, II, Ross Reinhardt, Matthew G. Harrington, Amish Rughoonundon, Jesse N. Klein, Aaron M. Burry
Abstract: An adaptive lighting system of an off-road utility vehicle includes an illumination device controllable with respect to its emission characteristic or light intensity, and a control unit in communication with the illumination device. The control unit is configured to adapt the emission characteristic or light intensity level by controlling the illumination device based upon a determined gaze direction of a vehicle operator, an identified extraneous light effects, a determined relative position of an external off-road utility vehicle, or cartographic location information.
Abstract: A rain gutter illumination system having a cover for attaching to a rain gutter with an aperture along the substantial length of the cover, and opposing recesses for retaining a decorative insert. When the decorative insert is inserted in the cover, it is held in place by the recesses, and a light source and optional diffusing panel may be arranged in the cover so that the light source projects light through the aperture of the illuminable surface. The light source may be remotely controllable using a wireless remote control device, such as a smart phone over a network connection.
Abstract: An active lighting device of a bicycle includes a first optical system with a first light source arrangement for long-distance illumination, which is controlled by a control unit, and a second optical system with a second light source arrangement for short-distance illumination, which is controlled by the control unit. A light sensor determines the light intensity of a location of the bicycle and allows the control unit to adapt the light intensity of the light sources, if they are activated and if the ambient light intensity is below a threshold. A speed sensor determines the speed of the bicycle, so that the control unit controls the activation of the light sources of the first light source arrangement from a speed threshold. An orientation or inclination detector selects and adjusts the light intensity of light sources.
July 12, 2019
Date of Patent:
January 14, 2020
The Swatch Group Research and Development Ltd
Olivier Matthey, Michel Willemin, Bruno Scagliarini
Abstract: An apparatus can include: a linear drive circuit configured to control a drive current flowing through an LED load; a control circuit configured to acquire a conduction angle signal of a silicon-controlled rectifier dimmer and control the linear drive circuit; and the control circuit being configured to control the drive current to be decreased to reduce a current ripple and to maintain the silicon-controlled rectifier dimmer in a turn-on state when the conduction angle signal is less than a predetermined value.
Abstract: A lighting system (10), in particular a shelf lighting system, is used for locating products (40, 41, 42). Said lighting system comprises at least two lamp units (24-31), each of which (24-31) or a defined group of which (24-31) is assigned to a different space, especially a shelf surface. The lighting system (10) further comprises a control unit for controlling the lamp units (24-31), to each of which (24-31) or to each defined group of which (24-31) a different lamp address is assigned. The lamp address is linked to a product association that is unambiguously associated with a product (40, 41, 42) located in the assigned space. The lighting system (10) also comprises a user interface (54) used for displaying the product associate and for selecting, by means of the displayed product association, the lamp unit (24-31) or defined group of lamp units (24-31) to be controlled. The invention further relates to a corresponding method for providing a lighting system (10) and locating a product.
Abstract: A pulse width modulation (PWM) signal generator according to one embodiment of the present invention includes a first comparison unit for comparing a duty value being inputted with a reference wave being inputted to output a first PWM signal, a signal inversion unit for inverting the duty value being inputted on the basis of a maximum value of the reference wave, a second comparison unit for comparing the duty value inverted by the signal inversion unit with the reference wave being inputted to output a second PWM signal, and a reference wave generator for generating a reference wave to transmit the same to each of the first comparison unit and the second comparison unit.