Abstract: The present disclosure relates to the technical field of optical lens and discloses a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The camera optical lens satisfies following conditions: 1.51?f1/f?2.50, 1.70?n3?2.20, ?2.00?f3/f4?2.00, ?10.00?(R13+R14)/(R13?R14)?10.00 and 1.70?n5?2.20, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; f3 denotes a focal length of the third lens; f4 denotes a focal length of the fourth lens; n3 denotes a refractive index of the third lens; n5 denotes a refractive index of the fifth lens; R13 denotes a curvature radius of an object-side surface of the seventh lens; and R14 denotes a curvature radius of an image-side surface of the seventh lens.

Abstract: The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens made of a plastic material; a second lens made of a plastic material; a third lens made of a plastic material; a fourth lens made of a plastic material; a fifth lens made of a glass material; a sixth lens made of a plastic material; and a seventh lens made of a plastic material. The camera optical lens satisfies following conditions: 1.51f1/f2.50; 1.70n52.20; ?2.00f3/f42.00; ?10.00(R13+R14)/(R13?R14)10.00; and 0.01d9/TTL0.20. The camera optical lens can achieve a high imaging performance while obtaining a low TTL.

Abstract: The present disclosure relates to a speaker device. The speaker device may include a speaker assembly and a supporting connector. The speaker assembly may include a speaker module and a button module. The supporting connector may be configured to contact with the human head and provide a vibration fulcrum for a vibration of the speaker assembly. A distance between a center of the button module and the vibration fulcrum may be not greater than a distance between a center of the speaker module and the vibration fulcrum.

Abstract: The present disclosure relates to the technical field of optical lens and discloses a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The camera optical lens satisfies following conditions: 1.00?f1/f?1.50, 1.70?n5?2.20, ?2.00?f3/f4?2.00; 0.50?(R13+R14)/(R13?R14)?10.00; 1.70?n7?2.20, where f1 denotes a focal length of the first lens; f denotes a focal length of the camera optical lens; n5 denotes a refractive index of the fifth lens; f3 denotes a focal length of the third lens; f4 denotes a focal length of the fourth lens; R13 denotes a curvature radius of the object-side surface of the seventh lens; R14 denotes a curvature radius of the image-side surface of the seventh lens; n7 denotes a refractive index of the seventh lens. The camera optical lens can achieve a high imaging performance while obtaining a low TTL.

Abstract: The back plate has four lateral walls and a bottom plate. A back side of the bottom plate includes multiple sets of folding hooks. Each set corresponds a different installation platform. One of the multiple sets of folding hooks is folded to be used for hooking to a corresponding installation platform. The light source module has multiple LED modules disposed on the bottom plate. Each LED module has a LED device and a lens. The lens diffuses a light of the LED device to be evenly emitted from the lens and broadening an output angle of the light via the lens. The diffusion plate with a peripheral edge is fixed to the four lateral walls of the back plate. The driver cover is attached to an external side of one of the four walls of the back plate. The driver cover defines a container cavity for concealing the driver module.

Abstract: An additive manufacturing device utilizing an electron beam and laser integrated scanning comprises: a vacuum generating chamber (1); a worktable means having a forming region at least provided in the vacuum generating chamber (1); a powder supply means configured to supply a powder to the forming region; an electron-beam emission focusing and scanning means (6) and an laser-beam emission focusing and scanning means (7) configured in such a manner that a scanning range of the electron-beam emission focusing and scanning means (6) and a scanning range of the laser-beam emission focusing and scanning means (7) cover at least a part of the forming region; and a controller configured to control the electron-beam emission focusing and scanning means (6) and the laser-beam emission focusing and scanning means (7) to perform a powder integrated-scanning and forming treatment on the forming region.

Abstract: The present disclosure relates to the technical field of optical lens and discloses a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The camera optical lens satisfies following conditions: 1.51?f1/f?2.50, 1.70?n4?2.20, ?2.00?f3/f4?2.00, 0.00?(R13+R14)/(R13?R14)?10.00 and 1.70?n6?2.20, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; f3 denotes a focal length of the third lens; f4 denotes a focal length of the fourth lens; n4 denotes a refractive index of the fourth lens; n6 denotes a refractive index of the sixth lens; R13 denotes a curvature radius of an object-side surface of the seventh lens; and R14 denotes a curvature radius of an image-side surface of the seventh lens.

Abstract: A linear light apparatus includes a light strip, a light passing cover, a main bracket, a bottom holder and a metal clip. The light strip having an elongated substrate mounted with LED modules. The main bracket holds the light strip for the LED modules emitting a light passing through the light passing cover. The metal clip has a first thorn and a second thorn. The metal clip is pressed to one side wall for the first thorn to stab a second insulation layer to electrically connect the bottom holder and the metal clip. The second thorn stabs a first insulation layer for the metal clip to be electrically connect to the first metal part of the main bracket.

Abstract: A flexible polyurethane foam material with strong support and high elasticity is made by foaming the following raw materials by weight: 80-120 parts of lignin-based block copolymer molecular-level combined polyether; 45-65 parts of isocyanate; 0.5-5 parts of foaming catalyst; 1-10 parts of water; and 1-3 parts of foam stabilizer; the lignin-based block copolymer molecular-level combined polyether is based on lignosulfonate, molecular chain of lignosulfonate is cut and embedded by using solvation effect of polyether polyol to form a molecular-level combined polyether that is polymerized and formed by aromatic polymer fragments of lignosulfonate and aliphatic polymer fragments of polyether polyol. The foaming catalyst can be a foaming catalyst commonly used in the technical field.

Abstract: A large-particle spherical salt with a particle size of 400-950 ?m and a sphericity of 0.5-1.0 is disclosed, which overcomes the existing difficulty in this field for larger particle size as well as higher sphericity. A preparation method of the large-particle spherical salt is also disclosed, wherein in one preparation process, 2% of gum arabic (based on the mass percentage of solute sodium chloride in a sodium chloride saturated solution) is added, and under conditions of an evaporating temperature of 60° C. a stirring rate of 350 rpm, and an evaporating time of 8 hours, a large-particle spherical salt with a particle size of 921.593 ?m and an average sphericity of 0.904 is successfully prepared. The large-particle spherical salt prepared by the method has a uniform particle size distribution and good appearance, can be combined with other substances, adding some extra value to the salt. Meanwhile, the large-particle spherical salt prepared by the method has a high safety grade (e.g.

Abstract: The present disclosure relates to the field of optical lenses and provides a camera optical lens sequentially including, from an object side to an image side, first to sixth lenses. The camera optical lens satisfies following conditions: 3.00?(d1+d2)/d3?4.00; 1.50?(d9+d10)/d11?3.00; and ?5.00?R9/R11??4.60, where d1, d3, d9 and d11 denotes on-axis thicknesses of the first, second, fifth and sixth lenses, respectively; d2 denotes an on-axis distance from an image side surface of the first lens to an object side surface of the second lens; d10 denotes an on-axis distance from an image side surface of the fifth lens to an object side surface of the sixth lens; and R9 and R11 denote curvature radiuses of object side surfaces of the fifth and sixth lenses, respectively. The camera optical lens according to the present disclosure can achieve high optical performance while satisfying design requirements for ultra-thin, wide-angle lenses having large apertures.

Abstract: A system configured to perform scalable video encoding is provided. The system includes a memory; and a processing unit, wherein the processing unit is configured to: receive inter-layer data and a current picture, wherein the current picture has a base layer; upsample the inter-layer data to generate residual data and reconstruction data, wherein the inter-layer data includes a base mode flag; and encode the current picture to an enhanced layer using the upsampled inter-layer data based on a block type of the base layer and the base mode flag.

Abstract: A strip lamp includes a body, a lampshade, an illuminating component and a holder. The body includes a support wall and a tilt wall. The tilt wall is connected to the support wall's two opposite lateral sides. Also, the tilt wall forms an included angle between the tilt wall's two opposite lateral sides. The lampshade is detachably engaged with the body and is detachably connected to the tilt wall's both lateral sides. The illuminating component is installed on the support wall to face against the lampshade's inner surface. The illuminating component's illuminating span angle is smaller than or equal to the tilt wall's included angle. The holder is detachably engaged with the body. In addition, the holder loads the illuminating component.

Abstract: The present disclosure relates to an acoustic output apparatus. The acoustic output apparatus may include an earphone core including at least one acoustic driver for outputting sound though one or more sound guiding holes set on the acoustic output apparatus, a controller configured to cause the at least one acoustic driver to output sound, a power source assembly configured to provide electrical power to the earphone core, the one or more sensors, and the controller, and an interactive control component configured to allow an interaction between a user and the acoustic output apparatus.

Abstract: A lignin-based block copolymer molecular-level combined polyether is based on lignosulfonate, a molecular chain of lignosulfonate is cut and embedded by using solvation effect of polyether polyol to form a molecular-level combined polyether that is polymerized and formed by aromatic polymer fragments of lignosulfonate and aliphatic polymer fragments of polyether polyol. The present invention uses a type of molecular mixing technology with a special structure to re-edit and splice the lignin molecular fragments of the hard segment on the microscopic level with the polymer polyols of the soft segment on the macroscopic level, to obtain a molecular-level combined polyether by a method of block copolymerization. Such a molecular-level combined polyether has dual characteristics of strong support and softness, which perfectly solves the problem how to balance strong support and softness of flexible polyurethane foam materials.

Abstract: Provided are methods and compositions from reprogramming human glial cells into human neurons. The reprogramming is achieved using combinations of compounds that can modify signaling via Transforming growth factor beta (TGF-?), Bone morphogenetic protein (BMP), glycogen synthase kinase 3 (GSK-3), and ?-secretase/Notch pathways. The reprogramming is demonstrated using groups of three or four compounds that are chosen from the group thiazovivin, LDN193189, SB431542, TTNPB, CHIR99021, DAPT, VPA, SAG; purmorphamine. Reprogramming is demonstrated using the group of LDN193189/CHIR99021/DAPT, the group of B431542/CHIR99021/DAPT, the group of LDN193189/DAPT/SB431542, the group of LDN193189/CHIR99021/SB431542, a three drug combination of SB431542/CHIR99021/DAPT. Reprogramming using functional analogs of the compounds is also provided, as are pharmaceutical formulations that contain the drug combinations.

Abstract: The present application discloses a sound-output device, including a vibration speaker configured to generate a bone-conducted sound wave; and an air-conducted speaker configured to generate an air-conducted sound wave; the sound-output device is configured to output sound waves within a target frequency range, the bone-conducted sound wave includes a high frequency portion of the target frequency range, and the air-conducted sound wave includes a low frequency portion of the target frequency range.

Abstract: The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens sequentially includes, from an object side to an image side: a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a negative refractive power; a fourth lens having a positive refractive power; a fifth lens having a positive refractive power; and a sixth lens having a negative refractive power. The camera optical lens satisfies following conditions: 1.00?(v2+v4)/v3?1.90; 9.00?f3/f2?15.00; and 8.00?f4/f5?30.00, where v2, v3 and v4 denote abbe numbers of the second, third and fourth lenses, respectively; and f2, f3, f4 and f5 denote focal lengths of the second, third, fourth and fifth lenses, respectively. The camera optical lens according to the present disclosure can achieve high optical performance while satisfying design requirements for ultra-thin, wide-angle lenses having large apertures.

Abstract: A data transmission method, apparatus and system including terminal equipment for channel detection and terminating the channel detection at a first time position, a result of the channel detection being that a channel is idle; and the terminal equipment transmits data starting from a second time position, the second time position being after the first time position, a first time length between the first time position and the second time position being less than or equal to a second time length. The terminal equipment terminates the channel detection after determining that the channel is idle, and transmits data after a time length (a first time length). As the first time length is less than or equal to a time length (the second time length) of an OFF-ON transient period to which the data correspond, a time length between terminating the channel detection and transmitting the data is reduced.

Abstract: A linear light apparatus includes a light strip, a main bracket, two end covers and a bottom holder. The light passing cover has two side arc openings and two lateral bottom edges. The two lateral bottom edges of the light passing cover are respectively attached to two lateral walls of the main bracket. The ladder groove has a central surface and two tilt surfaces. The two tilt surfaces respectively extend from top edges of the two lateral walls to lower the central surface below a bottom line of the side arc opening. The two end covers respectively have a top part and a bottom part. The top parts of the two end covers respectively cover the arc openings of the light passing cover. The bottom parts of the two end covers respectively cover the lateral groove.