Savant Technologies LLC

Pan Yao

Jie Gao

Kun Xiao

Wei Rong

Bin Li

Zhiyong Wang

Huisheng Zhou

Aijun Wang

Hai Huang

Zhe Wang

Yin Suo

Weihu Chen

Yao Fu

Yimin Zhu

Jiachen Yang

Guangting Guo

Yankun Gong

Wubin Zhang

Jia Zhu

Sean Crawford Veit

Xiangjin Mo

Disclosed herein is a lighting device with adjustable technical effects using few extraction electrodes to keep the cost low and the device simple, the device including: at least one filament group, wherein each filament group includes at least one filament, each filament includes at least one first light emitting unit and at least one second light emitting unit, which are connected in anti-parallel, and the first light emitting unit and the second light emitting unit have different light attributes from each other; and a light attribute adjusting unit, which is connected to both ends of each filament group to adjust a light attribute of light emitted from the lighting device, wherein the light attribute of the emitted light can be different from the light attribute of any light emitting unit.

Lighting device and method for adjusting light attribute of the same

The application relates to a sensing device and a lighting device. The sensing device comprises a sensor provided with a glass window to transmit light and is configured to sense light incident upon the sensor; a circuit board, wherein one side of the circuit board is provided with the sensor; a Fresnel lens arranged above the sensor and configured to transmit light to the sensor; and a housing made from a flame-resistant material, wherein the housing comprises an accommodation space configured to accommodate the sensor and the circuit board, and the housing is provided with a center hole to expose the glass window. By adopting the technical solution, the sensor has flame-resistant performance.

Sensing device and lighting device

The present disclosure provides a dummy load control circuit and a lighting device. The dummy load control circuit and a dummy load module are connected in parallel with a power supply input end and the dummy load control circuit includes a first switch circuit having a first switch control module so the first switch is controlled to be turned off when the power supply input end is connected to a triac dimmer, and turned on when the power supply input end is not connected to the triac dimmer, a second switch circuit having a second switch control module controlling on/off of the second switch, and a constant voltage source providing a constant voltage so the dummy load module is turned on when the first switch and the second switch are turned off, and turned off when the first switch and/or the second switch are turned on.

Dummy load control circuit and lighting device compatible with triac dimmer

Provided is a controller and a luminaire having the controller. The controller is provided in the luminaire, and may include a switch assembly provided on a side where a light outlet of the luminaire is located and configured to receive a selecting signal that is input from the outside, and a control board connected with the switch assembly and configured to generate a corresponding control signal on the basis of the selecting signal, so as to control a plurality of light sources of the luminaire to form at least two types of Correlated Color Temperatures (CCT), brightness and/or colors respectively. By the disclosure, the problem that it is hard for a user to adjust the CCT, the brightness and/or the color of the luminaire in the prior art is solved, and operating convenience of the user is improved.

Controller and luminaire having controller

Disclosed is a driving circuit for a Light Emitting Diode (LED) lamp, the LED lamp containing the driving circuit and a method for operating the driving circuit. The driving circuit includes: three alternating voltage input terminals, including two alternating voltage input terminals for receiving an alternating voltage and one common terminal, the two alternating voltage input terminals are controlled so that at least one alternating voltage input terminal receives the alternating voltage from a power supply; a constant current control circuit receiving the alternating voltage through at least one alternating voltage input terminal and outputting a constant direct current to an LED load, the constant current control circuit includes a constant current control chip having a maximum on-time pin; and a three-stage dimming detection control circuit including a variable control resistor for three-stage dimming control, and is controlled by the alternating voltage received by at least one alternating voltage input terminal so that the variable control resistor is connected to the maximum on-time pin with different resistance values, and the constant current control chip outputs three different current levels according to a resistance value of the connected variable control resistor.

Driving circuit for LED lamp, LED lamp containing same and method for operating driving circuit

Disclosed are a filament device for an illumination device, the illumination device, and a dimming method for the illumination device. The illumination device comprises: a dimming unit electrically connected to an external power supply, a first illumination unit which is electrically connected to the dimming unit and to which an input voltage from the external power supply is applied, a second illumination unit which is electrically connected to the dimming unit and to which an input voltage from the external power supply is applied, a unidirectional conduction unit electrically connected to the first illumination unit and the second illumination unit, a first current-limiting unit electrically connected to the first illumination unit; and a second current-limiting unit electrically connected to the second illumination unit, wherein the amplitude of the input voltage varies on the basis of a phase-cut angle of the dimming unit, when the amplitude of the input voltage varied on the basis of the phase-cut angle satisfies a first predetermined condition, the unidirectional conduction unit is in a turn-on state, and the illumination device operated in a first operation mode; and when the amplitude of the input voltage varied on the basis of the phase-cut angle satisfies a second predetermined condition, the unidirectional conduction unit is in a turn-off state, and the illumination device operates in a second operation mode. The effect of deepening the dimming depth is achieved.

Filament device for illumination device, illumination device, and dimming method for illumination device

Provided is a switchable Correlated Color Temperature (CCT) illuminating device. The device may include a CCT switching unit, forming electrical connection with a drive power source, and a bulb shell, at least one filament being arranged inside the bulb shell, the filament including a substrate, and a first light-emitting unit group and a second light-emitting unit group arranged on the substrate and forming electrical connection with the CCT switching unit. Each of the first light-emitting unit group and the second light-emitting unit group comprises one or more light-emitting unit, the first light-emitting unit group and the second light-emitting unit group are connected in parallel and conducting directions thereof are opposite, and when one of the first light-emitting unit group and the second light-emitting unit group is in a positive ON status, the other is in a negative OFF status. When the CCT switching unit is in a first operating mode, the first light-emitting unit group is in the positive ON status, and the CCT switchable illuminating device emits light with a first CCT. When the CCT switching unit is in a second operating mode, the second light-emitting unit group is in electrical conduction, and the CCT switchable illuminating device emits light with a second CCT. Therefore, the problem that the illuminating device in the prior art has a single CCT is solved.

CCT switchable illuminating device

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Shanghai, China

Pan Yao