Abstract: An imaging method of a head-mounted display and a head-mounted display are disclosed. The method includes, but is not limited to: detecting a wavefront of a beam emitted by the head-mounted display through its optical system; acquiring a position of a visual axis of a human eye; calculating a deviation between the visual axis of the human eye and an optical axis of the optical system; and adjusting a wavefront incident to the human eye according to the deviation, so that a correspondence between the wavefront incident to the human eye and the visual axis is consistent with a correspondence between the wavefront of the beam emitted from the optical system and the optical axis.

Abstract: A projection mechanism and glasses are disclosed. The projection mechanism comprises an arc-shaped guide rail, a mounting bracket and a projection assembly. The mounting bracket is slidably arranged on the arc-shaped guide rail. The mounting bracket is provided with a through hole. The projection assembly is inserted in the through hole. The arc-shaped guide rail and the mounting bracket are respectively used to connect the rim and the temples. The mounting bracket can be located at a first position or a second position of the arc-shaped guide rail. When the mounting bracket is located at the first position of the arc-shaped guide rail, a light source output end of the projection assembly faces toward the rim. When the mounting bracket is located at the second position of the arc-shaped guide rail, the projection assembly is far away from the rim.

Abstract: A head-mounted device and a control method, apparatus and system are disclosed. The head-mounted device comprises a device body, a bracket connected with the device body, and at least one rotary arm. The bracket is used to wear the head-mounted device on a user's head. The bracket is provided thereon with a bone conduction speaker. One end of the rotary arm is rotationally connected to the bracket, and the other end of the rotary arm is provided with an earphone.

Abstract: The present application discloses a lithium-ion battery, which has a positive electrode sheet, a negative electrode sheet, a separator, and an electrolyte solution comprising a lithium salt and a solvent, wherein based on the total weight of the electrolyte solution, the percentage by mass of the lithium salt in the electrolyte solution is a %, and the lithium ion battery satisfies 5?a?10; and the load on single side of the negative electrode sheet is W grams per 1540.25 mm2, and a and W satisfy 25?a/W?50; and the solvent comprises dimethyl carbonate. The lithium ion battery has good safety and high-temperature cycling performance, and also has good kinetic performance.

Abstract: A smear staining machine and a smearing control method and device thereof. The viscosity of the test sample is used for guiding the configuration of at least on smearing parameter. Since the viscosity of the test sample presents multiple influences of many effecting parameters, it is more suitable for presenting the characteristics of the test sample. Therefore, better smearing effect could be acquired by referring the viscosity of the test sample to get the smearing parameter.

Abstract: Provided are VR image processing method and apparatus. The method includes: rendering left-eye and right-eye viewpoint regions based on left-eye and right-eye view angles respectively, to obtain left-eye and right-eye viewpoint images; determining a candidate region based on positions of the left-eye and right-eye view angles, and selecting a point in the candidate region as a peripheral image view angle; rendering left-eye and right-eye viewpoint peripheral regions based on the peripheral image view angle, to obtain a same viewpoint peripheral image; and splicing the viewpoint peripheral image with the left-eye viewpoint image and with the right-eye viewpoint image to obtain a left-eye complete image and a right-eye complete image.

Abstract: According to the disclosure, the light emitting device includes a substrate, a semiconductor structure, a first electrode unit, a second electrode unit, a plurality of micro elements. The substrate has a first surface and a second surface opposite to the first surface. The semiconductor structure located on top of the first surface of the substrate, and has a first semiconductor layer, an active layer, and a second semiconductor layer that are stacked sequentially. The first electrode unit is electrically connected to the first semiconductor layer. The second electrode unit is electrically connected to the second semiconductor layer. The plurality of micro elements are located on the second surface of the substrate. Each of the micro elements has a base that is protrusion that has a base diameter ranging from 400 nm to 1000 nm.

Abstract: A sample image capturing system includes a sample holding apparatus configured to hold a sample slide on which a sample film is applied; an imaging apparatus configured to capture the sample on the sample slide; a sample appearance image obtaining apparatus configured to obtain a sample appearance image, where the sample appearance image includes at least an appearance image of the sample film; and a controller configured to: obtain the sample appearance image, identify an appearance characteristic of the sample film based on the sample appearance image, determine a capturing parameter based on the appearance characteristic, and control the imaging apparatus to capture, with the capturing parameter, sample components on the sample slide. The disclosure further relates to a sample image capturing method and a computer-readable storage medium. The disclosure can use a characteristic of the appearance image to achieve accurate capturing of sample images.

Abstract: The present application provides an electrolyte solution, a secondary battery and a power consuming device. The electrolyte solution may contain a solvent, an additive and a lithium salt. The solvent may include a first solvent and a second solvent, the first solvent being a cyclic ester solvent, and the second solvent being a linear carboxylic ester solvent. The additive may include a film forming additive. Based on the total mass of the electrolyte solution, the lithium salt may have a mass fraction of W1, the film forming additive may have a mass fraction of W2, and the second solvent may have a mass fraction of W3, which may satisfy the following relationship: 0.2?(W1+W2)/W3?0.4.

Abstract: The present application provides a secondary battery, an electrolyte, and an apparatus including the secondary battery. The secondary battery of the present application includes an electrolyte, characterized in that the electrolyte includes an organic solvent, and the organic solvent includes a cyclic carbonate and a chain carbonate; the mass ratio of the cyclic carbonate and the chain carbonate is from 25:75 to 32:68; the chain carbonate includes dimethyl carbonate; the mass percentage of the dimethyl carbonate in the chain carbonate is greater than or equal to 9 wt % and less than 50 wt %; wherein based on the total mass of the organic solvent, the mass percentage of a carboxylic acid ester is less than 5 wt %. The secondary battery of the present application can simultaneously obtain excellent low-temperature power, long service life and cycle performance.

Abstract: A near-eye display device and an eye tracking system for the near-eye display device are provided. The eye tracking system includes a processor, a control analysis device, an LED illuminating device, a DMD display device and an IR camera. The processor outputs a video signal corresponding to a video displayed on the near-eye display device to the control analysis device. The control analysis device generates an LED synchronization signal and a corresponding subfield display signal. The LED illuminating device drives an LED to emit light, and transmits the light emitted from the LED into the DMD display device. The DMD display device reflects the light into a lens to form an image, and projects the image onto an eye. The IR camera captures an eye image. The control analysis device acquires the eye image and analyzes the eye image to obtain gaze point information.

Abstract: Provided are VR image processing method and apparatus. The method includes: rendering left-eye and right-eye viewpoint regions based on left-eye and right-eye view angles respectively, to obtain left-eye and right-eye viewpoint images; determining a candidate region based on positions of the left-eye and right-eye view angles, and selecting a point in the candidate region as a peripheral image view angle; rendering left-eye and right-eye viewpoint peripheral regions based on the peripheral image view angle, to obtain a same viewpoint peripheral image; splicing the viewpoint peripheral image with the left-eye viewpoint image and with the right-eye viewpoint image to obtain a left-eye complete image and a right-eye complete image; and reducing, when a displacement of a left-eye viewpoint or a right-eye viewpoint within a preset time period is less than a preset displacement, an area of a corresponding viewpoint region and increasing an area of a corresponding viewpoint peripheral region.

Abstract: An adjusting mechanism is disclosed. The adjusting mechanism includes, but is not limited to, a middle shell and a foam support. The adjusting mechanism further includes, but is not limited to a sliding module movably arranged in the middle shell, connected with the foam support, and configured to adjust a horizontal spacing between the middle shell and the foam support. The adjusting mechanism still further includes, but is not limited to, a flipping module rotatably arranged on the sliding module, connected with the foam support, and configured to drive the foam support to flip relative to the middle shell.

Abstract: The disclosure provides a ultraviolet light-emitting device, which includes a substrate and multiple light-emitting structures. The light-emitting structures are disposed on the substrate and electrically connected to each other. Each light-emitting structure includes a first semiconductor layer, a light-emitting layer, a second semiconductor layer, a first contact electrode, and a second contact electrode. The first semiconductor layer is located between the substrate and the light-emitting layer. The light-emitting layer is located between the first semiconductor layer and the second semiconductor layer. The first contact electrode is located on the first semiconductor layer, and the second contact electrode is located on the second semiconductor layer. Viewing from the top, the second contact electrode of each light-emitting structure has four edges, and the four edges are sequentially defined as the first edge, the second edge, the third edge, and the fourth edge in an annular direction.

Abstract: A three-dimensional reconstruction method, comprising: performing slide calculation on an acquired current image frame to obtain to-be-processed windows; performing point feature extraction and line feature extraction on the to-be-processed windows, and determining corresponding features in each to-be-processed window; performing iterative quadtree splitting for circles on each target to-be-processed window to obtain circular regions of interest corresponding to each target to-be-processed window; performing feature screening on features in the target circular regions of interest to obtain target features corresponding to each target circular region of interest; and performing three-dimensional reconstruction corresponding to the current image frame by using the target features.

Abstract: An image display method, an image display device, and a readable storage medium are disclosed. The image display method applied to a headset display device comprises: controlling the camera to capture a display image, comparing the display image with a corresponding reference image, to obtain a pixel point of the display image that is changed relative to the reference image, wherein the reference image is a previous frame image of the display image captured by the camera (S10); obtaining pixel information of the pixel point according to the changed pixel point (S20); and refreshing the changed pixel point to the display screen according to the pixel information (S30).

Abstract: A method and device for adjusting a position of an earphone, equipment and storage medium are disclosed. The earphone is provided with a TOF sensor. The method comprises: acquiring position information of an ear using the TOF sensor, wherein the position information of the ear includes positions of points describing the ear in morphology; determining a position of a center point of an ear canal of the ear according to the position information of the ear; acquiring a position of a center point of the earphone; and outputting an adjustment vector of the position of the earphone according to the position of the center point of the ear canal and the position of the center point of the earphone.

Abstract: The present application provides a secondary battery, an electrolyte, and an apparatus including the secondary battery. The secondary battery of the present application includes an electrolyte, characterized in that the electrolyte includes an organic solvent, and the organic solvent includes a cyclic carbonate and a chain carbonate; the mass ratio of the cyclic carbonate and the chain carbonate is from 25:75 to 32:68; the chain carbonate includes dimethyl carbonate; the mass percentage of the dimethyl carbonate in the chain carbonate is greater than or equal to 9 wt % and less than 50 wt %; wherein based on the total mass of the organic solvent, the mass percentage of a carboxylic acid ester is less than 5 wt %. The secondary battery of the present application can simultaneously obtain excellent low-temperature power, long service life and cycle performance.

Abstract: The disclosure provides an ultraviolet light emitting diode including an epitaxial structure, a first contact electrode, a second contact electrode, a first connecting electrode, and a first insulating structure. The epitaxial structure includes a first semiconductor layer, a light emitting layer and a second semiconductor layer stacked in sequence. The first contact electrode is disposed on the epitaxial structure and electrically connected to the first semiconductor layer. The second contact electrode is disposed on the epitaxial structure and electrically connected to the second semiconductor layer. The first connecting electrode is disposed on the first contact electrode. The first insulating structure is disposed on the first connecting electrode and the second contact electrode. The epitaxial structure has multiple conductive holes penetrating from the second semiconductor layer down to the first semiconductor layer.

Abstract: A data acquisition method and apparatus for a head-mounted display device, a host and a head-mounted display device are provided. The method includes: acquiring user head posture information collected by a head posture sensor; determining a predicted head position at a next rendering moment based on the user head posture information and a current display scene of the head-mounted display device; and acquiring a current video rendering corresponding to the current rendering moment based on the predicted head position and video data at the current rendering moment, in order that the head-mounted display device displays a rendered video at the current rendering moment and a target time warped frame, where the current video rendering includes the rendered video and one or more time warped frames for the next rendering moment, and the target time warped frame is one of the one or more time warped frames.