Abstract: Several optical micro-electromechanical systems (OptoMEMS) are provided. One of the OptoMEMS comprises an OptoMEMS chip, and a photonic chip coupled to the OptoMEMS chip; wherein the OptoMEMS chip comprises a photonic cavity and a first platform on which the photonic cavity is fabricated, and the photonic chip comprises a waveguide and a second platform on which the waveguide is fabricated; wherein the photonic cavity comprises at least one dielectric beam, each of which further comprises at least one array of air holes; wherein the photonic cavity is at least partially made of a photonic crystal, and the lattice constant of the photonic crystal is reduced or increased gradually in a central region of the photonic cavity, allowing the light of a specific frequency to be trapped in the center region.

Abstract: Several optical micro-electromechanical systems (OptoMEMS) are provided. One of the OptoMEMS comprises an OptoMEMS chip, and a photonic chip coupled to the OptoMEMS chip; wherein the OptoMEMS chip comprises a photonic cavity and a first platform on which the photonic cavity is fabricated, and the photonic chip comprises a waveguide and a second platform on which the waveguide is fabricated; wherein the photonic cavity comprises at least one dielectric beam, each of which further comprises at least one array of air holes; wherein the photonic cavity is at least partially made of a photonic crystal, and the lattice constant of the photonic crystal is reduced or increased gradually in a central region of the photonic cavity, allowing the light of a specific frequency to be trapped in the center region.

Abstract: This application disclose a camera module and an electronic device. The camera module includes a lens assembly and an image stabilization assembly. The lens assembly includes a rigid flexible printed circuit board and a lens. The rigid flexible printed circuit board includes a rigid board part and a flexible board part led out from the rigid board part. The image stabilization assembly includes a movable part, a fastening part, and a connecting component. The movable part is fastened to the lens assembly, the fastening part is connected to the movable part by using the connecting component, and the movable part is configured to rotate relative to the fastening part by using the connecting component. A coordinate of a rotation center of the movable part in a Z-axis direction is close to or equal to a coordinate of the rigid board part in an optical axis of the lens.

Abstract: This application provides a camera assembly and an electronic device. The camera assembly includes a camera and a flexible circuit board. The camera can swing around at least one of a first axis, a second axis, and a third axis, where the third axis is used as an optical axis of the camera. In an extension direction of the flexible circuit board, one end of the flexible circuit board is connected to a circuit board in the camera, and the other end of the flexible circuit board is fastened to and electrically connected to a mainboard. A bent redundant structure for releasing stress is disposed between the two ends of the flexible circuit board. The redundant structure can extend in a direction of rotation around at least one of the first axis, the second axis, or the third axis.

Abstract: An optical image stabilization module and an electronic device. The optical image stabilization module includes a first bracket, a second bracket, and a third bracket that are nested in sequence from inside to outside, and an optical lens module fixed on the first bracket. A first connection assembly is arranged between the first bracket and the second bracket, to enable the first bracket and the second bracket to form a rotational connection about a first rotation axis. A second connection assembly is arranged between the second bracket and the third bracket, to enable the second bracket and the third bracket to form a rotational connection about a second rotation axis. The first rotation axis, the second rotation axis, and an optical axis of the camera are perpendicular to each other.

Abstract: A radio frequency slimming treatment apparatus includes a plurality of connection components and a plurality of radio frequency slimming treatment heads, each of which includes a main body of the treatment head, a plurality of radio frequency electrodes, an interface that is employed to connect the radio frequency source configured over the main body of the treatment head, a fixation surface configured at the end of the main body of the treatment head that is distal from the interface. The plurality of radio frequency electrodes are configured over the fixation surface and arranged in the form of an array. As a result, the current of the radio frequency slimming treatment head of the present disclosure is uniform, the temperatures of the different regions of the radio frequency electrodes are uniform and the penetration depth of the radio frequency current is deeper, and the lipolytic effect is significant.

Abstract: The present invention discloses a system and a method for controlling PCS voltage and frequency, wherein the system comprises a reference voltage converter, a phase-locked loop, a grid-side voltage converter, a voltage transformer, a first proportional integral controller, a second proportional integral controller, a coordinate converter and a SVPWM generator; a reference voltage converter is connected to an output terminal of a the phase-locked loop, and the output terminal of the phase-locked loop is further connected to a grid-side voltage converter; the grid-side voltage converter is connected to a high-voltage side of an isolating transformer of the electric grid via the voltage transformer; two output terminals of the grid-side voltage converter are respectively connected to the coordinate converter via two proportional integral controllers; an output terminal of the coordinate converter is connected to the SVPWM generator; an output terminal of the SVPWM generator is connected to a power switch of the

Abstract: The present invention discloses a system and a method for controlling PCS voltage and frequency, wherein the system comprises a reference voltage converter, a phase-locked loop, a grid-side voltage converter, a voltage transformer, a first proportional integral controller, a second proportional integral controller, a coordinate converter and a SVPWM generator; a reference voltage converter is connected to an output terminal of a the phase-locked loop, and the output terminal of the phase-locked loop is further connected to a grid-side voltage converter; the grid-side voltage converter is connected to a high-voltage side of an isolating transformer of the electric grid via the voltage transformer; two output terminals of the grid-side voltage converter are respectively connected to the coordinate converter via two proportional integral controllers; an output terminal of the coordinate converter is connected to the SVPWM generator; an output terminal of the SVPWM generator is connected to a power switch of the