Abstract: A method for manufacturing a grating, a grating manufactured by the method, and an optical waveguide including the grating are provided. The method includes the following. A substrate is provided. A mask layer is formed on a surface of the substrate according to a target pattern structure of the grating, where the mask layer has a pattern structure complementary to the target pattern structure, and the pattern structure includes multiple protrusions and multiple recessed regions. A grating is formed by depositing a semiconductor material on the surface of the substrate. The semiconductor material is deposited in the multiple recessed regions of the pattern structure of the mask layer to form the target pattern structure. The mask layer is removed by lift-off. The method provided herein is simple in process and can enhance production efficiency. The manufactured grating has a relatively high refractive index and can reduce light scattering.

Abstract: A vibration motor includes a housing, a coil accommodated in the housing, a vibrator and an elastic member supporting the vibrator. The vibrator including a magnetic bowl and a counterweight located at an outer side of the magnetic bowl and fixedly connected with the magnetic bowl. The magnetic bowl including a bottom wall and a side wall extending from the bottom wall towards the elastic member, and the magnetic bowl further includes a bent portion bent from the side wall towards the counterweight and abutting against the counterweight.

Abstract: A vibration motor is provided in the present disclosure. The vibration motor includes a housing, a magnet module received in the housing and fixedly connected with the housing, the magnet module comprising a main magnet unit as well as a first vice magnet unit and a second vice magnet unit symmetrically disposed on two sides of the main magnet unit, and the main magnet unit being spaced from the first vice magnet unit and the second vice magnet unit to form magnetic gaps, a vibration module, comprising a coil inserted into the magnetic gaps and masses for clamping the coil, and an elastic support, configured for connecting the coil and the masses to suspend the vibration module in the housing. A stop module for limiting the amplitude of the masses is disposed between the masses and the first vice magnet unit and between the masses and the second vice magnet unit.

Abstract: A vibration motor is provided in the present disclosure. The vibration motor includes a housing, a magnet module received in the housing and fixedly connected with the housing, the magnet module comprising a main magnet unit as well as a first vice magnet unit and a second vice magnet unit symmetrically disposed on two sides of the main magnet unit, and the main magnet unit being spaced from the first vice magnet unit and the second vice magnet unit to form magnetic gaps, a vibration module, comprising a coil inserted into the magnetic gaps and masses for clamping the coil, and an elastic support, configured for connecting the coil and the masses to suspend the vibration module in the housing. A stop module for limiting the amplitude of the masses is disposed between the masses and the first vice magnet unit and between the masses and the second vice magnet unit.

Abstract: A sound transducer is disclosed. The sound transducer includes a plastic frame having a cavity and a wall surrounding the cavity, the wall having an inside surface face toward the cavity and an outside surface opposite to the inside surface, a number of sinks disposed on the inside surface of the plastic frame in a row, a yoke located in the cavity and including a sidewall for contacting with the plastic frame, a gap formed by the sink cooperatively with the sidewall of the yoke, and bonding adhesive located in the gap for fixing the yoke in the frame firmly.

Abstract: A sound transducer is disclosed. The sound transducer includes a plastic frame having a cavity and a wall surrounding the cavity, the wall having an inside surface face toward the cavity and an outside surface opposite to the inside surface, a number of sinks disposed on the inside surface of the plastic frame in a row, a yoke located in the cavity and including a sidewall for contacting with the plastic frame, a gap formed by the sink cooperatively with the sidewall of the yoke, and bonding adhesive located in the gap for fixing the yoke in the frame firmly.