Xiamen Eco Lighting Co. Ltd.

Other

Xiamen Leedarson Lighting Co., Ltd

Fujie Chen

Jinghu Li

Yibin Chen

Liangliang Cao

Wei Liu

Yuxin Huang

Hanghui Tu

Hongkui Jiang

Qiqiang Lin

An Lin

Liangqiong Shi

Zhicong Luo

Dejuan Liang

Yuankai You

Zhang Fan

Jianhai Yu

Yuanyuan Zhou

Qipeng Lin

A high-speed TIA anti-5G WIFI electromagnetic interference method includes the steps of: stacking a high-voltage capacitor Cand a resistor Rfor constructing a filter circuit on a bare DIE chip of TIA; splitting Cinto two parallel filter capacitors Cand C, which satisfy C=C+C, C=C; constructing differential output to cancel signal interference; constructing electromagnetic interference that cancels out lens leakage by stacking avalanche photodiode APD, Cand gold-plated pad on the vertical axis close to the bare DIE chip, and connecting to the pads through gold wires; stacking Rand Con the vertical axis between pins VDD and VAPD, connecting Rto Cthrough gold wire No. 1, connecting Cto pin VAPD through gold wire No. 2, the gold wire No. 1 and the gold wire No. 2 form a 90° angle to offset the electromagnetic interference leaked by the lens.

High-speed TIA anti-5G WIFI electromagnetic interference method

An optical receiver chip based on OTN transmission technology to solve the high power consumption and serous signal attenuation problems for data transmission below 100 m in the data center includes a receiver, a digital control unit, and a power module. The receiver includes a 28G transimpedance amplifier and a limiting amplifier, converts a weak optical signal into an electrical signal, process a two-stage amplification, and output the signal in a limited state. The signal is then processed by a photodiode into a DC current RSSI, and judged by the internal received signal strength indicator module or the internal optical modulation amplitude loss of signal module of the limiting amplifier. If the signal does not meet the protocol requirements, the output buffer with de-emphasis and the linear equalizer are turned off, and the judgment result is transmitted to the host computer outside the chip simultaneously.

Optical receiver chip based on OTN transmission technology

An optical transmitter chip based on OTN transmission technology, which solves the high bit error rate in existing OTN technology for data transmission below 100 m in the data center, includes a transmitter TX, a digital control unit DIGIITAL, and a power module POWER. The transmitter TX first uses the optical modulation amplitude signal loss module to complete a judgment of an optical modulation amplitude for an attenuated electrical signal transmitted through metal traces on a PCB board. Only if the signal is greater than the preset threshold, an enable signal is output to control a linear equalizer and a laser driver to start, and open a signal transmission path for the chip-driven laser to emit an optical signal. The linear equalizer and the bypass ByPass process signal optimization in two-stage, then the signal is sent to the laser driver to drive the laser to emit an optical signal.

Optical transmitter chip based on OTN transmission technology

A light bulb apparatus includes a bulb shell, a light source module, a driver, a first cap body, a wireless module and a second cap body. The light source module includes a plurality of LED modules. The first cap body is connected to the bulb shell. The first cap body has a surrounding wall. The surrounding wall includes metal material. Heat of the light source module and the driver is transmitted to the surrounding wall. The wireless module is electrically connected to the driver. The second cap body is connected to the first cap body and an Edison cap. The Edison cap has two electrodes for receiving an external power source from an Edison socket. The second cap body is made of plastic material. The wireless module is located at least partially in the second cap body.

Light bulb apparatus

A high-speed optical transceiver integrated chip drive circuit with phase delay compensation function includes a transmitting end drive circuit to drive the laser to emit light to transmit signals and a receiving end drive circuit to optimize the signal degradation caused by the signal sent by the transmitting end drive circuit to the laser via the transmission backplane; a long code phase lead adjustment circuit is arranged on the main channel of the transmitting end drive circuit, and a long code phase lag adjustment circuit is set on the main channel of the receiving end drive circuit. The present invention is used to optimize high-speed signals and solve the problem that the CML drive circuit at the receiving end or the laser drive circuit at the transmitting end cannot compensate the difference between the group delay and phase delay for the high-speed signal after passing through the backplane (Laser device).

High-speed optical transceiver integrated chip drive circuit with phase delay compensation function

The lighting apparatus includes a LED module, a constant current source, a bridge rectifier, a silicon-controlled rectifier, a wireless module and a detector. The lighting apparatus receives an alternating current power to generate a light. The constant current source provides a driving current to the LED module. The bridge rectifier converts the alternating current power of a first frequency to a direct current power with a second frequency. The second frequency is two times of the first frequency. The silicon-controlled rectifier is connected to the alternating current power and the bridge rectifier for adjusting the direct current power with a chopping signal. The wireless module receives an external control signal. The detector generates a dimming control signal supplied to the constant current source to adjust the driving current according to both the external control signal and the chopping signal.

Lighting apparatus

A lighting apparatus includes a lens module, a light source plate, a first set of LED modules ad a second set of LED modules, and a driver. The first set of LED modules are located at first positions of the light source plate. The second set of LED modules are located at second positions of the light source plate. The driver controls the first set of LED modules and the second set of LED modules for generating a first output light pattern and a second output light pattern. The first light pattern and the second light pattern are mixed to generate one of multiple projected shapes on a projected surface controlled by the driver.

A light sensing drive circuit and a lamp are provided. The light sensing drive circuit includes a filtering and rectifying module configured to generate a rectified voltage according to the commercial power; a power module configured to generate a supply voltage according to the rectified voltage; a light sensing module configured to generate a light sensing signal according to ambient light intensity and the supply voltage; a sampling module configured to generate a sampling signal according to the rectified voltage; a main control module configured to generate a control signal of a preset duty cycle according to the light sensing signal and the sampling signal when the drive module is turned off by the control signal; a drive module configured to generate a driving voltage according to the control signal and the rectified voltage so as to drive the internal LED module to emit light.

Growing community of inventors

Xiamen, China

Fujie Chen