Abstract: A method for generating a correction function, an image correction method and apparatuses are provided.

Abstract: Provided is a method and device for tracking eyeballs, a display device, a device, and a medium. The device for tracking eyeballs includes a distance detecting unit, a light emitting unit, a light detecting unit, and a processing unit; wherein the distance detecting unit is configured to detect a first distance between an eyeball to a target object; the light emitting unit is configured to irradiate a target eyebox region of the target object with infrared light; the light detecting unit includes a plurality of sub-units arranged in an array, wherein each of the plurality of sub-units includes a plurality of receivers; and the processing unit is configured to control a first receiver in each of the plurality of sub-units to receive the infrared light reflected by the eyeball and determine a position of the eyeball based on an intensity of the infrared light received by the first receiver.

Abstract: A display device is provided. The display device includes a display panel, a micro-lens assembly, and a lens assembly; wherein the micro-lens assembly comprises at least three micro-lens arrays; wherein orthographic projections of the at least three micro-lens arrays on a display region of the display panel are arranged sequentially in a direction away from a center of the display region, and the micro-lens array is configured to decrease a light exit angle of a light beam traveling through the micro-lens array, to make the light exit angle of the light beam traveling through the micro-lens array less than or equal to the maximum value of the corresponding light exit angle.

Abstract: A near-eye display device, including: a display device (1) for displaying an image; an imaging lens (2) on a light-outgoing side of the display device (1) and for imaging the image displayed on the display device (1); a polarizer (3) on the light-outgoing side and for converting light emitted from the display device (1) into linearly polarized light; first and second phase delay layers (41, 42), on a side of the polarizer (3) distal to the display device (1) and for converting a polarization state of incident light; a polarized light splitter (5) on a side of the second phase delay layer (42) distal to the polarizer (3); and a curved mirror (6) on a reflected light path of the polarized light splitter (5) and for partially reflecting light transmitted by the second phase delay layer (42) to human eyes and partially transmitting ambient light.

Abstract: Some embodiments include a copper (Cu)-doped titania coating layer, including a titania matrix and Cu element doped therein, characterized in that a doping amount of the Cu element is 4-25 mol % of the entire cured coating layer. Some embodiments include a coating composition of the coating layer, and a process for preparing the coating composition, including: (1) preparing a solution comprising a titanium alkoxide and a diluent; (2) preparing a solution comprising a copper precursor compound and a diluent, (3) mixing the above two solutions to obtain a precursor mixture of the composition, wherein in the above steps (1) and (2), the pH value of the solutions is controlled to in the range of 0.1 to 6, and the solutions of steps (1) and (2) are substantially free of water.

Abstract: A flexible antimicrobial glass capable of effectively inhibiting the reduction of silver ions includes the following components in percentages by mass: 55-65% of SiO2, 16-25% of Al2O3, 5-12% of Na2O, 0.5-4% of K2O, 2-8% of MgO, 0-1% of CaO, 0-2% of ZiO2, 0.1-1% of Ag2O, 0.2-3.55% of CoO, and 0-0.5% of Na2S. The above constituting raw materials compose a batch, and the batch is melted and molded. The flexible antimicrobial glass can perfectly inhibit the reduction of silver ions into elemental silver, such that the yellowing of the glass is effectively controlled; it has antimicrobial performance, and the strength and toughness of the glass are prevented from damage because the flexible glass is thin. The glass has an antimicrobial activity grade of grade II, with the antimicrobial R being greater than or equal to 3, and has visible light transmittance at 380-780 nm of greater than or equal to 91%.

Abstract: An OLED glass with improved optical performance relates to the field of glass production and manufacturing, and is manufactured from the following raw materials in percentage by weight: 57-62% of SiO2, 20-24% of Al2O3, 0.5-2% of B2O3, 2-5% of BaF2, 8-11% of SrO, 0.5-1.5% of BeF2, 0.2-0.5% of SnO2, 0.3-1.0% of La2O3, 0.2-1.0% of P2O5, 0.2-0.8% of AlF3, and 0.1-0.3% of AgNO3. Silicon dioxide and aluminum oxide are sieved and stirred uniformly, mixed uniformly with the remaining raw materials, melted, thinned in a tin bath and formed, annealed, and cut, to obtain a product. The glass not only meets the performance of optical glass, but also has excellent mechanical performance and thermal performance, which has an improved application prospect in OLED glass and display industries.

Abstract: An eyepiece system is applied to a near-eye display device and includes: a plurality of lenses sequentially disposed along an optical axis from an image-side to an object-side, wherein a refractive index of each of the plurality of lenses is greater than 1.65, and a total system length of the plurality of lenses along the optical axis is less than or equal to 25 mm.

Abstract: Provided is a near-eye display apparatus, comprising: a first display (11), used for displaying a first image, entering a beam splitter (30) by means of a first imaging lens (12); a second display (21), used for displaying a second image, entering the beam splitter (30) by means of a second imaging lens (22), the beam splitter (30) being used for transmitting the imaging light beam of the first imaging lens (12) and reflecting the imaging light beam of the second imaging lens (22); a waveguide plate (40), located on the light exit path of the beam splitter (30), and used for receiving outgoing light from the beam splitter (30) and transmitting same; the waveguide plate (40) is internally provided with a light-taking component (400), the light-taking component (400) being used for reflecting the imaging light beam transmitted in the waveguide plate (40) toward a position where a human eye is located.

Abstract: An optical system has an optical axis, and includes a positive focal power lens, a negative focal power lens and a display. The positive focal power lens includes a first convex surface away from the display and a second convex surface proximate to the display. The negative focal power lens includes a third convex surface away from the display and a fourth concave surface proximate to the display. For a refractive index of the positive focal power lens and a refractive index of the negative focal power lens, one is greater than another, and a greater refractive index is a first refractive index, a smaller refractive index is a second refractive index, the first refractive index is greater than 1.7, the second refractive index is greater than 1.5, and a ratio of the first refractive index to the second refractive index is less than or equal to 2.

Abstract: A near-eye display device, including: a display screen (1) used for image display; an imaging lens (2) located at a light emission side of the display screen (1) and used for imaging a displayed image of the display screen (1); a flat plate (3) located on the side of the imaging lens (2) facing away from the display screen (1) and obliquely arranged relative to the optical axis of the imaging lens (2); a phase retardation layer (4) located on the side of the flat plate (3) facing the imaging lens (2); a polarization beam-splitting layer (5) located between the phase retardation layer (4) and the flat plate (3); a polarizing layer (6) located between the polarization splitting layer (5) and the flat plate (3); and a curved mirror (7).

Abstract: A head-up display system and a display apparatus are provided in this disclosure, which relates to a technical field of displaying. The head-up display system includes a display unit; a light splitting unit provided on a light emitting side of the display unit and configured to transmit a first linearly polarized light and block a second linearly polarized light, light emitted by the display unit being converted into the first linearly polarized light after passing through the light splitting unit; a light-transmitting substrate; a first imaging unit provided on an optical path from the light splitting unit to the light-transmitting substrate and configured to be able to transmit and reflect the first linearly polarized light; and a second imaging unit provided on a side of the light-transmitting substrate away from the first imaging unit, and configured to reflect the first linearly polarized light transmitted through the light-transmitting substrate.

Abstract: A head up display system, including: a display screen used for displaying an image; an imaging lens arranged on a light exit side of the display screen and used for imaging an image displayed on the display screen; and a curved reflecting mirror arranged on the side of the imaging lens facing away from the display screen and used for receiving imaging light of the imaging lens and reflecting said light to the position where human eyes are located. Relative positions of the display screen and the imaging lens are fixed, and the imaging lens and the curved reflecting mirror adopt a separate structure.

Abstract: A method for generating a correction function, an image correction method and apparatuses are provided.

Abstract: A near-eye display apparatus, a display method thereof and a wearable device. The near-eye display apparatus comprises: at least one first display unit (31), the first display unit (31) being configured to form at an imaging position a first image; at least one second display unit (32), the second display unit (32) being configured to form at the imaging position a second image, the first image and the second image being spliced to form a display image; and an optical path adjustment structure (5), the optical path adjustment structure (5) being configured to transmit towards the direction of the imaging position at least part of emergent light rays of the first display unit (31), and to reflect towards the direction of the imaging position at least part of emergent light rays of the second display unit (32).

Abstract: Disclosed is a near eye display apparatus, comprising a display screen and an imaging system. The imaging system comprises a biconvex lens, a transflective plane mirror and a transflective curved mirror. The biconvex lens is configured to magnify a display image of the display screen; the transflective plane mirror is configured to receive imaging light from the biconvex lens and reflect same to the transflective curved mirror; and the transflective curved mirror is configured to converge the imaging light and reflect same to the position(s) where human eyes are located.

Abstract: Provided are an optical waveguide structure, an Augmented Reality (AR) device, and a method for obtaining an emergent light efficiency of an optical waveguide structure, which relates to the technical field of display. The optical waveguide structure includes: an optical waveguide body, a coupling-in grating disposed at the optical waveguide body, and a plurality of coupling-out gratings distributed and arranged. The coupling-in grating is configured to couple image light into the optical waveguide body. The optical waveguide body is configured to generate a total internal reflection of the image light to the coupling-out gratings. Diffraction efficiencies of each of the coupling-out gratings are different, and each of the coupling-out gratings is configured to couple the image light out of the optical waveguide body at the same brightness.

Abstract: An optical system, a display apparatus, and smart glasses are provided. The optical system includes a transflective element, a reflective element and a plurality of microstructures. The transflective element is configured to reflect collimated incident light to the reflective element. The reflective element is configured to reflect the collimated incident light back to a light incident surface of the transflective element, so as to adjust an angle at which the collimated incident light exits. The transflective element is further configured to transmit the reflected-back collimated incident light to a target region. The plurality of microstructures are configured to adjust angles at which ambient stray light incident on surfaces thereof exits, and to scatter the ambient stray light out of the target region.

Abstract: A lens assembly is provided. The lens assembly includes a display panel and N number of lenses. The N number of lenses includes a first lens having a receiving surface configured to receive image light from the display panel and an N-th lens having an exit surface through which the image light exits, N?2. On a side where the image light exits the N-th lens, the N-th lens has a length and a width. A ratio of the length to the width is greater than 3:1.

Abstract: A method of preparing PAN-based carbon fibers relates to the technical field of materials. The method includes: S1. acrylonitrile, a second monomer and an unsaturated UV-sensitive cross-linking agent are mixed, an initiator is then added and a reaction is performed to obtain a meltable PAN-based copolymer; S2. the meltable PAN-based copolymer and a flow modifier are mixed to obtain a mixture, the mixture is extruded and pelletized, and then melt spinning is performed to obtain nascent fibers, the nascent fibers are stretched and annealed to obtain a PAN-based carbon fiber precursor; S3. ultraviolet irradiation is performed on the PAN-based carbon fiber precursor; S4. the PAN-based carbon fiber precursor after ultraviolet irradiation is pre-oxidized and carbonized to obtain PAN-based carbon fibers.