Abstract: A lens unit, a lens for a low-beam illumination module, a low-beam illumination module and a vehicle. The lens unit includes a rear surface and a front surface; the lens unit has a focal line, and the focal line is a straight line perpendicular to a light emitting direction of the lens unit; the rear surface and the front surface are adapted to project light rays passing through the focal line into parallel light rays, and the front surface is a free-form curved surface. The lens unit has the optical characteristics of a cylindrical lens, and is able to cause parallel incident light to be focused into a line instead of a focal point upon passing through the lens unit.

Abstract: A method for preparing an electrode material includes: a) producing a microspherical precursor by way of co-precipitation; b) forming an intermediate product by calcining the precursor with a stoichiometric amount of sodium carbonate, lithium carbonate and a structural stabilizer; and c) performing an ion exchange process to the intermediate product under molten LiNO3/LiCl to form a lumpy residue. An electrode for lithium-ion battery includes an electrode material having a general formula of Li[Li1/3(TMxAly)]O2, and lithium-ion battery comprising an electrode such as a cathode having the above electrode material are also addressed.

Abstract: Computerized techniques are provided for storing a set of representative features for use with a machine learning process. A first set of training images for a class are accessed and processed, using a feature extraction technique, to determine a set of features for the class. A set of representative features from the set of features for the class is determined using a selection technique. The set of representative features are stored for the class. A second set of images is accessed. The machine learning process is executed, using the stored set of representative features, including executing one or more of: a training phase to train a classifier using the second set of images and at least part of the stored set of representative features; and a testing phase to run the classifier using the second set of images and at least part of the stored set of representative features.

Abstract: A bearing seal including an anchoring portion fixed on an inner ring of the bearing, and a sealing portion capable of forming a sealing fit with an outer ring of the bearing, the seal providing rigid slinger of substantially circular shape, the slinger having a root portion formed at a position corresponding to the anchoring portion for stabilization and support, and a radial portion formed in the section corresponding to the area between the anchoring portion and the sealing portion for radial support, wherein the radial portion is formed with at least one slot with the opening direction facing the radial periphery.

Abstract: A controlled oxidizing method is provided for preparing a high-performance nickel-rich lithium ion battery cathode material having a composition of LiNixM1-xO2, where 0.6<x<0.9, and M is one or more metals selected from the group consisting of Co, Mn, Fe, Ti, Zr, V, and Cr. The method comprises combining a water-soluble salt precursor of nickel and a water-soluble salt precursor of the one or more M metals with one or more oxidizing agents to form an aqueous solution. The aqueous solution is alkalized to a selected pH value to produce precipitated precursors. The precipitated precursors are mixed with a lithium precursor to form a lithiated precursor. The lithiated precursor is calcined to form the nickel-rich lithium ion battery cathode material.

Abstract: A vehicle lighting apparatus comprising a headlight module comprising a light collecting part, a reflection part, a light outlet part, a first optical channel, and a second optical channel arranged in sequence along a light emitting direction, the first optical channel connecting the light collecting part and the reflection part, the second optical channel connecting the reflection part and the light output part, the connecting position of the lower surface of the second optical channel and the light output part provided with a low beam cut-off line structure for forming a low beam bright-dark cut-off line, the light collected by the light collecting part emitted toward the light outlet part after reflection by the reflection part. The present headlight module is miniaturised and has a high rate of light utilisation.

Abstract: A double-row one-way bearing includes a bearing outer ring and a bearing inner ring coaxially arranged around a central axis. Spherical rollers are arranged between the bearing outer ring and the bearing inner ring. Wedges are radially arranged between the bearing outer ring and the bearing inner ring relative to the central axis, and spaced apart from the spherical rollers in the axial direction. Each wedge is provided with a groove at the side away from the bearing inner ring. A cage is coaxially arranged with the bearing outer ring and the bearing inner ring and provided with roller holding portions and wedge holding portions. The spherical rollers are respectively held in the roller holding portions and the wedges are respectively held in the wedge holding portions. An elastic limit ring passes through the groove of each wedge to apply a radially inward force to each wedge.

Abstract: A headlamp optical element with a III-region light shape forming structure that comprises a light collecting portion, a first light emitting portion, a reflecting portion, and optionally a second light emitting portion. The light collecting portion converges incident light and emits light via the first light emitting portion. Some light may be directly emitted to the second light emitting portion. The rest of the light may be reflected by the reflecting portion and emitted to the second light emitting portion. The reflecting portion is connected to the lower portion of the first light emitting portion, with a lower beam cut-off line structure at the other end thereof. The light emitting surface of the first light emitting portion comprises multiple step surfaces with segment differences or is a single curved surface.

Abstract: An optical element, comprising a light guide body. The light guide body comprises a plurality of light-incident parts arranged along a length extension direction of the light guide body, a light guide part and a light-emitting part; each light-incident part is provided with at least one light-incident unit; the light guide part is configured to guide light received by each light-incident unit to be emitted toward the light-emitting part; the shape of a forward projection plane of the light-emitting part is of a strip shape. The optical element can reduce the occupied space and improve the space utilization rate, facilitates reducing positioning mounting errors, has an appearance with a narrow and elongated shape, and can be applied in vehicle lamp modules, vehicle lamps and vehicles.

Abstract: A vehicle light optical element assembly of a vehicle lamp, and a vehicle lighting device, a vehicle lamp and a vehicle comprising the vehicle light optical element assembly of the vehicle lamp. The vehicle light optical element assembly comprises a low-beam primary optical element, a high-beam primary optical element provided below the low-beam primary optical element, and a lens provided on the front end of the low-beam primary optical element and/or the high-beam primary optical element, wherein the low-beam primary optical element and/or the high-beam primary optical element are integrated with the lens, and the low-beam primary optical element and the high-beam primary optical element are suitable for light convergence and collimation to then pass through the lens to form a low-beam illumination light shape and a high-beam illumination light shape. The vehicle light optical element assembly has the advantages of a compact structure, small volume, and high assembly accuracy.

Abstract: A ball bearing includes an inner ring (1), an outer ring (2), and a ball (3). The inner ring (1) has an inner ring groove curvature radius Ri. The outer ring (2) has an outer ring groove curvature radius Re. The ball (3) has a ball diameter Dw. The ratio of the outer ring groove curvature radius Re to the ball diameter Dw satisfies: Re/Dw?0.5275; and/or the ratio of inner ring groove curvature radius Ri to the ball diameter Dw satisfies: 0.5175?Ri/Dw?0.55. The ball bearing may be accommodated in a housing, thereby forming a ball bearing assembly.

Abstract: A cage includes a first sub-part having a plurality of first partitions integrated as a whole and a plurality of first pocket portions formed by adjacent first partitions. A first engaging portion is formed on at least one of the first partitions. A second sub-part includes a plurality of second partitions integrated as a whole and a plurality of second pocket portions formed by adjacent second partitions. A second engaging portion is formed on at least one of the second partitions. A pocket is formed by the first pocket portion and its corresponding second pocket portion. Each first engaging portion snaps with its corresponding second engaging portion. The cage overcomes the harmful umbrella effect found in a one-piece polymer prong-type cage, so that the bearing equipped with this cage can operate under very high speeds. The cage can be part of a ball bearing.

Abstract: A cage includes a first sub-part having a plurality of first partitions integrated as a whole and a plurality of first pocket portions formed by adjacent first partitions. A second sub-part has a plurality of second partitions integrated as a whole and a plurality of second pocket portions formed by adjacent second partitions. A first recess is provided on the first partition belonging to a first set of the plurality of first partitions. A second pin extends along an axial direction from the second partition belonging to a second set of the plurality of second partitions. The second pin is fixed in its corresponding first recess. The first set of first partitions includes any one or more of the plurality of first partitions. The second set of second partitions includes any one or more of the plurality of second partitions and correspond to the first set of first partitions respectively.

Abstract: An automotive headlamp system and an automotive lamp. The automotive headlamp system comprises a light source, a primary optical element, an automotive signal lamp structure, and a secondary optical element arranged sequentially along the light emitting direction. The automotive signal lamp structure comprises a light-transmitting portion and a rotating shaft. The light-transmitting portion comprises at least one light-transmitting plate mounted on the rotating shaft which can be driven to rotate by the rotating shaft. By means of rotation, light from the light source exits from the primary optical element, then selectively passes through one of or none of the light-transmitting plates, and is then projected by means of the secondary optical element to achieve a corresponding signal lamp function. The light-transmitting plate mounted on the rotating shaft is used to replace an existing signal lamp, reducing the space occupied by the original signal lamp, decreasing the volume of a headlamp.

Abstract: A primary optical element, a primary optical assembly, an optical assembly, a vehicle lamp lighting device and a vehicle. The primary optical element comprises a primary optical element main body comprising a light guiding portion and a fusion light-emitting portion which are provided from rear to front, a front end surface of the fusion light-emitting portion is provided as a light-emitting surface, and the light guiding portion comprises a plurality of light guiding columns, the thickness of the fusion light-emitting portion in the up-down direction greater than the thickness of the light guiding portion in the up-down direction, and the fusion light-emitting portion able to fuse light transmitted by the plurality of light guiding columns to the fusion light-emitting portion, and then emit the light by means of the light-emitting surface. The primary optical assembly, the optical assembly, the vehicle lamp lighting device, and the vehicle comprise the optical assembly.

Abstract: A method for preparing a high-performance single-crystal layered cathode material of formula LiNixTM1-xO2 (0.6<x<0.9, TM=one or more of Mn, Co, Fe, Zr, V, Ti) or formula Na0.66TMO2 (TM=one or more of Ni, Mn, Fe, Cr, and Co). Stoichiometric amounts of transition-metal salts are mixed to form a transition metal salt solution. A precipitating agent is added to the transition metal salt solution followed by co-precipitating a mixed transition metal precipitant. The mixed transition metal precipitant is mixed with a lithium precursor or a sodium precursor to form a cathode material precursor mixture. The cathode material precursor mixture is subjected to various calcining and grinding processes followed by annealing to create single crystal layered cathode material particles.

Abstract: A vehicle headlamp optical system, a vehicle headlamp, and a vehicle. The vehicle headlamp optical system comprises a plurality of modules and a light distribution lens that is disposed in front of each module. The plurality of modules comprise at least one high-beam module, at least one main low-beam module, and at least one auxiliary low-beam module. The light distribution lenses are narrow, long light distribution lenses. Each module is disposed at an interval along the length direction of the light distribution lenses. Thus, the miniaturization and diversified design of a vehicle headlamp can be achieved.

Abstract: A method for producing multiple temporal frames of a time-resolved contrast enhanced magnetic resonance angiogram from a subject using an MR contrast agent by repeatedly applying RF pulses and sampling data in the corresponding image k-space along spiral trajectories that start at the k-space center and spiral outward toward the k-space edge.