Abstract: A design method for a metalens, a metalens, a shaping and beam-combination device and a display device are provided, when Gaussian beams passes through the metalens, the Gaussian beams are shaped into a plurality of flat-topped beams that project to a target position on a target plane. The method includes: determining an incident parameter, and the incident parameter includes wavelengths and radius of the plurality of Gaussian beams; determining an outgoing parameter, and the outgoing parameter includes a width of flat-topped beams; setting metalens portions on the metalens and determining a position of each metalens portion; the metalens portions and the Gaussian beams are one-to-one correspondence, calculating a modulation phase distribution according to the incident parameter, and the outgoing parameter and the position of each metalens portion; arranging unit cells on the metalens portions according to the modulation phase distribution, and obtaining the metalens.

Abstract: A method of designing a metasurface, a beam shaper, a device and electronic equipment are provided. The method of designing the metasurface includes: determining a type of an incident beam and parameters of the incident beam; determining a type of an outgoing beam and a parameter of the outgoing beam; based on the parameters of the incident beam and the parameter of the outgoing beam, determining an initial value of a diffraction phase distribution; the diffraction phase distribution represents a phase distribution configured to modulate the incident beam to the outgoing beam; based on the type of the incident beam and the type of the outgoing beam, iteratively optimizing the diffraction phase distribution to obtain an optimized diffraction phase distribution; generating a target phase distribution according to the optimized diffraction phase distribution; and generating the metasurface according to the target phase distribution.

Abstract: A display screen, a method and a device for designing the display screen, and a storage medium are provided. The display screen includes pixels periodically arranged, each pixel includes at least one sub-pixel. Each sub-pixel includes a basic structure and at least one micro or nano sized structure. The basic structure emits imaging light with color for display. The micro or nano sized structure is provided on a back-lighting side of the basic structure, and is configured to project incident light into speckles and enable the speckles to pass through the basic structure. A refractive index of the basic structure is different from a refractive index of the micro or nano sized structure.

Abstract: A method and a device of designing a metasurface, and a storage medium are provided. The method includes determining a phase distribution of an initial metasurface according to a preset image and a light source function of a first light source; the preset image includes a plurality of projection points in an array; performing a simulation based on the phase distribution of the initial metasurface and a second light source, so as to obtain a speckle image; if the speckle image does not meet a preset standard, optimizing the phase distribution of the initial metasurface through adjusting the projection points on the preset image, so as to determine a target phase distribution; generating the metasurface according to the target phase distribution.

Abstract: A multifunctional shower device for top spraying and hand holding is disclosed. The top of the shower is provided with a water inlet, and the bottom of the shower is provided with a water outlet panel. One end of the shower hose is connected with a water inlet pipe joint, and the other end of the shower hose is connected with the water inlet on the top of the shower. The shower hose and the movable pulley are placed in the storage shell. Half of the weight of the movable pulley is greater than the weight of the shower. The movable pulley falls naturally under the action of gravity, and the movable pulley drives the shower hose to be stored in the storage shell in a U shape. The bracket is fixed on the storage shell and the shower seat is arranged on the bracket.

Abstract: A cable, a manufacturing method, and a usage method, each facilitate product development, testing, and debugging. An illustrative embodiment of a cable manufacturing method includes: connecting a first end connector plug to a first data recovery and re-modulation (DRR) device and to a first controller device; and providing a bypass switch that operates under control of the first controller device to merge the command bus with the configuration bus, thereby enabling direct access to the configuration bus by the first host interface port. The first end connector plug has: a set of dedicated pins for conveying mufti-lane data streams between the first DRR device and a first host interface port; and additional pins for a two-wire command bus conveying communications between the first host interface port and a first controller device, the first controller device operable to configure the first DRR device via a two-wire configuration bus.

Abstract: A cable, a manufacturing method, and a usage method, each facilitate product development, testing, and debugging. An illustrative embodiment of a cable manufacturing method includes: connecting a first end connector plug to a first data recovery and re-modulation (DRR) device and to a first controller device; and providing a bypass switch that operates under control of the first controller device to merge the command bus with the configuration bus, thereby enabling direct access to the configuration bus by the first host interface port. The first end connector plug has: a set of dedicated pins for conveying mufti-lane data streams between the first DRR device and a first host interface port; and additional pins for a two-wire command bus conveying communications between the first host interface port and a first controller device, the first controller device operable to configure the first DRR device via a two-wire configuration bus.