Abstract: A display apparatus and a manufacturing method thereof are provided. The display apparatus includes a display panel and a lens structure. The display panel includes a substrate and a plurality of sub-pixels located on the substrate. The lens structure is located on a light-emitting side of the display panel, and a lens surface of the lens structure close to the display panel is a curved surface. The display panel includes a first region and a second region surrounding the first region, an included angle between a light-emitting surface of a sub-pixel located in the first region and an optical axis of the lens structure is greater than an included angle between a light-emitting surface of a sub-pixel located in the second region and the optical axis.

Abstract: Disclosed in the present application are a method and system for implementing electrolyte monitoring, a computer storage medium, and a terminal. The method includes: acquiring an electrical signal including light intensity information by a first laser measuring device that is disposed in advance, the light intensity information including information of light intensity of laser light scattered after passing through an electrolyte including bubbles; determining a bubble particle size distribution function according to the acquired electrical signal; and calculating an instantaneous void volume of the electrolyte according to the determined bubble particle size distribution function, wherein the first laser measuring device is disposed at a position where the scattered light intensity of the laser light passing through the electrolyte can be measured.

Abstract: An optical system and a display apparatus are provided. The optical system includes: a lens component, a polarized reflection layer, a transflective film, and a phase retardation film; a distance between two intersection points where the first surface and the second surface intersect with the optical axis is a first distance, a distance between two intersection points where the third surface and the fourth surface intersect with the optical axis is a second distance, and a distance between two intersection points of the fifth surface and the sixth surface intersect with the optical axis is a third distance; a ratio of an absolute value of a curvature radius of the fourth surface to an absolute value of a curvature radius of the third surface is 0.8 to 1, the second distance is greater than the first distance, and the second distance is greater than the third distance.

Abstract: An optical structure and a display device are provided. The optical structure includes a first lens and a transflective film. The first lens includes a first surface and a second surface, the first surface and the second surface are non-planar surfaces; the transflective film is located at a side of the first surface away from the second surface. The optical structure further includes a light-transmitting flat plate assembly located at a side of the second surface away from the first surface, and the light-transmitting flat plate assembly includes a light-transmitting flat plate, a phase retardation film and a polarizing reflective film, the polarizing reflective film is located at a side of the phase retardation film away from the first lens, and the phase retardation film and the polarizing reflective film are located on a flat plate surface of the light-transmitting flat plate or inside the light-transmitting flat plate.

Abstract: Disclosed are a flow battery degassing device, a degassing method, a system, and a storage medium. The flow battery includes a liquid tank. The flow battery degassing device includes a degassing tank, a degassing pump, a liquid outlet pipe, and a liquid inlet pipe. The liquid outlet pipe is configured to enable an electrolyte in the liquid tank to flow into the degassing tank. The liquid inlet pipe is configured to enable the electrolyte in the degassing tank to flow into the liquid tank. The degassing pump is provided on the liquid inlet pipe and configured to form a vacuum environment in the degassing tank.

Abstract: Disclosed is an electrolyte storage tank, which comprises a tank body comprising an inner chamber, the tank body being provided with a liquid inlet and a liquid outlet which are in communication with the inner chamber, the tank body being formed of acid-resistant concrete by means of pouring, and the inner chamber of the tank body being configured to store an electrolyte.

Abstract: Provided are a flow battery cleaning apparatus, method, and system. A flow battery includes: a positive electrode liquid tank, a negative electrode liquid tank, and a stack unit, the positive electrode liquid tank and the stack unit forming a positive electrode circulation loop, and the negative electrode liquid tank and the stack unit forming a negative electrode circulation loop. The flow battery cleaning apparatus includes a detection apparatus, a first foreign matter removal apparatus, and a second foreign matter removal apparatus, and the detection apparatus includes a first detection apparatus. The first detection apparatus is configured to detect whether foreign matter is present in the stack unit, the first foreign matter removal apparatus is configured to adjust the pressure of the positive electrode circulation loop, and the second foreign matter removal apparatus is configured to adjust the pressure of the negative electrode circulation loop.

Abstract: Disclosed in the present utility model is a device for testing gas tightness of a bipolar plate. The device includes a fixing assembly and a liquid placing plate. The fixing assembly includes a base plate and a cover plate. The base plate and the cover plate are arranged opposite to each other, and a test space capable of accommodating a bipolar plate is formed between the base plate and the cover plate. The base plate or the cover plate is provided with a gas inlet for gas to enter the test space. The liquid placing plate is arranged in the test space and arranged to be stacked on the plate surface of the bipolar plate facing away from the gas inlet. The liquid placing plate is provided with a plurality of liquid placing recesses capable of containing liquid. The liquid placing recesses pass through opposite plate surfaces of the liquid placing plate.

Abstract: Embodiments of the present disclosure disclose an insulating protective mechanism, a conveying apparatus, and a flow battery energy storage system, which relate to, but are not limited to, insulating protection technology. The insulating protective mechanism comprises a frame, an insulating protective cover, a transmission assembly, a sensing assembly, and a control unit. The insulating protective cover is arranged on the frame, and can enclose with the frame an installation space for installing a conveying mechanism. The control unit controls the transmission assembly to facilitate driving the insulating protective cover to open or close the installation space, so as to facilitate maintenance and replacement of the conveying mechanism in the installation space, and reset the insulating protective cover after the maintenance and replacement of the conveying mechanism.

Abstract: A track disassembling device comprises a protective housing, a cleaning component and a lifting pin, wherein the protective housing comprises a shell and a supporting plate, the cleaning component is movably sleeved with the protective housing and comprises a cleaning disc, a positioning rod, a connecting disc, a limit disc, a first spring and a first movable block, and the lifting pin is propped against the cleaning disc. A crank structure is formed by fitting with a connecting rod, a locating pin, a second movable block and other structures through the rotation of a turntable, and the second movable block can make reciprocating movement under the limit of the supporting plate to the second movable block; the second movable block making reciprocating movement can exert pressure on the first fixing component to form an impact when the electric telescopic rod extends, achieving separation from the axis pin.

Abstract: A head-mounted display device and a control method thereof, and a computer-readable storage medium are provided. The head-mounted display device includes a display screen and a lens component, and the control method of the head-mounted display device includes: determining gaze directions of both eyes of a user; determining a gaze focus according to the gaze directions of the both eyes; and adjusting positions of the display screen and the lens component according to the gaze focus, so that the gaze focus is located at an image plane position of a virtual image formed by the lens component from an image displayed by the display screen.

Abstract: The present disclosure provides a laser diode package module. The laser diode package module includes a substrate including a first surface; a cover disposed on the first surface of the substrate; an accommodation space formed between the substrate and the cover; a laser diode die disposed in the accommodation space; and a reflective surface disposed in the accommodation space for outputting light of the laser diode die reflected by the reflective surface and transmitted through a light-transmitting area. The light-transmitting area is at least partially disposed on a surface of the cover opposite the substrate.

Abstract: The invention discloses a pulling rivet for fasten-connecting a conductive material. It consists of a rivet and a lantern ring, wherein the rivet comprises a dead head, a polish rod, a locking groove, a pulling groove and a short tail, the lantern ring comprises a flange, a deformation area and a clamping tooth, and a sharp protrusion is arranged on a contact surface of an inner side of the dead head and a fasten-coupling piece. The sharp protrusions of the present invention can be embedded into the surface of the fastening piece to prevent the sliding between the fasten-coupling piece and the rivet, and because the sharp protrusions are embedded into the surface of the fasten-coupling piece to form a tightly fitted whole, which improves the conductivity of the rivet and the frame.

Abstract: Disclosed is a cross-chain communication method. In this method, a first edge node of a first blockchain receives a first transaction request and validates the first transaction request; on condition that the first transaction request passes the validation, the first edge node will send the first transaction request to a notary node group; the notary node group determines at least one target notary node according to a preset criterion; the at least one target notary node validates the first edge node and a second edge node of a second blockchain corresponding to the first transaction request; and on condition that both the first edge node and the second edge node pass the validation, the first edge node will set up a cross-chain communication with the second edge node depending on the first transaction request to complete a cross-chain transaction. A cross-chain communication device and a storage medium are also disclosed.

Abstract: Disclosed is a cross-chain communication method. In this method, a first edge node of a first blockchain receives a first transaction request and validates the first transaction request; on condition that the first transaction request passes the validation, the first edge node will send the first transaction request to a notary node group; the notary node group determines at least one target notary node according to a preset criterion; the at least one target notary node validates the first edge node and a second edge node of a second blockchain corresponding to the first transaction request; and on condition that both the first edge node and the second edge node pass the validation, the first edge node will set up a cross-chain communication with the second edge node depending on the first transaction request to complete a cross-chain transaction. A cross-chain communication device and a storage medium are also disclosed.

Abstract: A ranging device includes a light emission device configured to emit a light pulse sequence, a light guide device, a first light reception device configured to monitor an output optical power of the light emission device, and a second light reception device configured to receive a light pulse signal reflected by an object and determine a distance between the object and the ranging device based on the light pulse signal. The light guide device includes a light incident surface, a reflection surface, and a light emission surface. The reflection surface includes a first reflection surface and a second reflection surface. At least one of the first reflection surface or the second reflection surface has a curved surface shape. The light guide device is configured to receive part of radiation power emitted by the light emission device and conduct the part of the radiation power to the first light reception device.

Abstract: A method for controlling a scanning field of view (FOV) of a ranging apparatus includes emitting a light pulse sequence, changing the light pulse sequence to exit at different direction via at least three optical elements, wherein controlling the scanning FOV by controlling the at least three optical elements including at least one of controlling at least one of a scan patterns, a position, or a scanning density of the scanning FOV by controlling rotation speeds of the at least three optical elements, and/or controlling an extension direction of the scanning FOV by controlling initial phases of the at least three optical elements.

Abstract: A ranging device includes a threshold determination circuit and a detection channel. The threshold determination circuit is configured to determine a candidate comparison threshold according to a threshold-influencing factor. The detection channel is configured to receive a light pulse signal reflected by an object, convert the light pulse signal into an electrical signal, compare the electrical signal with the candidate comparison threshold, obtain time information of the electrical signal triggering the candidate comparison threshold, and determine a distance between the object and the ranging device according to the time information.

Abstract: A ranging device includes a light source, a transceiver, a detector, and a light path changing element. The light source is configured to emit a light pulse. The transceiver is configured to collimate the light pulse and converge at least part of reflected light of the light pulse reflected by a detection object. The detector is configured to receive and convert the at least part of the reflected light into an electrical signal for measuring a distance between the detection object and the ranging device. The light path changing element is configured to combine emission light path and reception light path. The light path changing element includes an area configured to transmit or reflect part of the light pulse, and a reception solid angle of the area with respect to the light pulse is 20%-40% of a reception solid angle of the detector with respect to the reflected light.

Abstract: A ranging device includes a transmitter, a collimation element, a converging element, a detector, and at least one of a first pre-shaping element or a second pre-shaping element. The transmitter is configured to emit a light pulse sequence. The collimation element is configured to collimate the light pulse sequence. The converging element is configured to converge at least part of reflected light reflected by an object. The detector is configured to receive and convert the at least part of the reflected light to an electrical signal, and determine at least one of a distance or an orientation of the object with respect to the ranging device according to the electrical signal. An effective aperture of the collimation element is greater than an effective aperture of the first pre-shaping element, and an effective aperture of the converging element is greater than an effective aperture of the second pre-shaping element.