Abstract: An optical imaging lens may include a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element positioned in an order from an object side to an image side. Through designing concave and/or convex surfaces of the lens elements, the optical imaging lens may increase resolution, enlarge aperture stop and image height, and maintain well image quality.

Abstract: An optical imaging lens, including a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element disposed in sequence from an object side to an image side along an optical axis. The first lens element has positive refracting power, and an optical axis region of the image side of the first lens element is concave. A periphery region of the object side of the second lens element is convex. A periphery region of the image side of the third lens element is convex. An optical axis region of the image side of the fifth lens element is convex. The sixth lens element has negative refracting power. A periphery region of the object side of the eighth lens element is convex.

Abstract: An optical imaging lens includes a first lens element to an eighth lens element. The first lens element has positive refracting power, a periphery region of the image-side surface of the first lens element is concave, a periphery region of the object-side surface of the third lens element is concave, an optical axis region of the image-side surface of the sixth lens element is convex, an optical axis region of the object-side surface of the eighth lens element is convex, and a periphery region of the image-side surface of the eighth lens element is convex. Lens elements included by the optical imaging lens are only eight lens elements described above to satisfy D41t51/(T3+G34)?1.700.

Abstract: An optical imaging lens includes a first lens element to an eighth lens element and each lens element has an object-side surface and an image-side surface. The second lens element has negative refracting power, a periphery region of the image-side surface of the third lens element is convex, the fourth lens element has positive refracting power, an optical axis region of the object-side surface of the sixth lens element is convex, and an optical axis region of the object-side surface of the eighth lens element is concave. Lens elements included by the optical imaging lens are only eight lens elements described above to satisfy ?3+?4+?5+?6+?7?195.000 and (ImgH+BFL)/Fno?4.000 mm.

Abstract: The present invention provides an optical imaging lens. The optical imaging lens comprises seven lens elements positioned in an order from an object side to an image side. Through controlling the convex or concave shape of the surfaces of the lens elements, the optical imaging lens may shorten system length, enlarge aperture size and promote image height.

Abstract: An optical imaging lens includes first to seventh lens elements sequentially arranged along an optical axis from an object side to an image side, wherein each of the first lens element to the seventh lens element includes an object-side surface facing the object side and allowing an imaging ray to pass through and an image-side surface facing the image side and allowing the imaging ray to pass through. The first lens element has positive refracting power, and a periphery region of the image-side surface of the first lens element is concave. The second lens element has negative refracting power. An optical axis region of the image-side surface of the third lens element is convex. An optical axis region of the image-side surface of the fourth lens element is concave. The sixth lens element has negative refracting power. In particular, the optical imaging lens only has seven lens elements.

Abstract: An optical imaging lens includes a first lens element to a seventh lens element; each lens element has an object-side surface and an image-side surface. A periphery region of the image-side surface of the third lens element is concave, an optical axis region of the object-side surface of the fourth lens element is concave, the fifth lens element has negative refracting power, an optical axis region of the object-side surface of the seventh lens element is convex, and a periphery region of the object-side surface of the seventh lens element is concave. Lens elements included by the optical imaging lens are only seven lens elements described above to satisfy 2.200?(T1+D42t72)/(Fno*D12t32) and 115.000??3+?4+?5.

Abstract: The underwater acoustic test system comprises an underwater acoustic transmitting unit, an underwater acoustic parabolic reflector, an underwater acoustic receiving unit, an orientation control system, and a computer measurement and control system. The underwater acoustic transmitting unit comprises an underwater acoustic signal generator and a transmitting transducer. The underwater acoustic parabolic reflector comprises a central main reflecting area and an edge diffraction processing area, wherein the central main reflecting area is configured for reflecting acoustic wave signals, and the edge diffraction processing area is configured for reducing the influence of the underwater acoustic parabolic reflector on a test area. The underwater acoustic receiving unit comprises a receiving transducer and an underwater acoustic signal receiver. The orientation control system comprises a traveling crane and a test turntable.

Abstract: The disclosure provides a method and a device for measuring a cutting force, an electronic apparatus and a storage medium. The method includes: obtaining first cutting force data of a cutter of a craft equipment, first torque data of a first servo motor, and second torque data of a second servo motor in a case that the cutting force of the craft equipment is detected to be in a stable state; generating first cutting force compensation data based on a first torque mapping coefficient and the first torque data; generating second cutting force compensation data based on a second torque mapping coefficient and the second torque data; and correcting the first cutting force data based on the first cutting force compensation data and the second cutting force compensation data to obtain target cutting force data.

Abstract: An optical imaging lens may include a first, a second, a third, a fourth, a fifth, a sixth, a seventh, and an eighth lens elements positioned in an order from an object side to an image side. Through designing concave and/or convex surfaces of the eight lens elements, the improved optical imaging lens may provide better imaging quality while the system length may be shortened, the F-number may be reduced, the field of view may be extended, and the image height may be increased.

Abstract: A method of processing a semiconductor wafer is provided. The method includes installing upper lid. The installation of the upper lid includes placing an inlet manifold on a water box; inserting a jig into a lower gas channel in the water box and inserting into an upper gas channel in the inlet manifold; fastening the water box to the inlet manifold; and removing the jig after the water box engaging with the inlet manifold. The method also includes connecting a shower head on a lower side of the water box; and connecting the upper lid to a housing. The method further includes placing a semiconductor wafer into the housing. In addition, the method includes supplying a process gas over the semiconductor wafer through the upper gas channel, the lower gas channel and the shower head.

Abstract: An optical imaging lens includes a first lens element to a sixth lens element from an object side to an image side along an optical axis. An optical axis region of the object-side surface of the first lens element is concave, a periphery region of the object-side surface of the second lens element is convex, a periphery region of the image-side surface of the fourth lens element is concave, an optical axis region of the object-side surface of the fifth lens element is convex and a periphery region of the image-side surface of the sixth lens element is convex. Lens elements included by the optical imaging lens are only six lens elements described above. ImgH is an image height of the optical imaging lens and AAG is a sum of five air gaps from the first lens element to the sixth lens element along the optical axis to satisfy ImgH/AAG?3.200.

Abstract: A connection system for a linear lighting system has channels of adjacent luminaires coupled together by a coupling arrangement having a first plate, a second plate and fixings for clamping the first and second plates around wall portions of the two channels. The fixings are slidable along slots so that the coupling arrangement can be slid into an operable position or to an out-of-the way position for disassembly. One of the first and second plates comprises a spring member having sprung projections for projecting into the apertures, to provide an automatic clamping function when the coupling arrangement is tightened. For example, there may be an outer coupling plate and an inner spring plate which forms the spring member.

Abstract: A method for dividing communication services in smart substation into different priorities, the method including: determining the priority of a message to be sent according to the service type and its priority definition; the communication services includes trip message, state change message, sampled value message, device status message, time synchronization message, and file transfer message; the corresponding priority is respectively defined as 7, 6, 5, 4, 3, 1; and filling the user priority field of IEEE802.1Q label in a message header with a binary value corresponding to its priority.

Abstract: The present invention provides an optical imaging lens. The optical imaging lens comprises five lens elements positioned in an order from an object side to an image side. Through controlling the convex or concave shape of the surfaces of the lens elements and satisfying an inequality, the optical imaging lens may be provided with smaller volume and great field of view.

Abstract: An optical imaging lens includes a first lens element to a seventh lens element, and each lens element has an object-side surface and an image-side surface. The second lens element has negative refracting power, a periphery region of the object-side surface of the third lens element is concave, an optical axis region of the image-side surface of the third lens element is convex, the fifth lens element has positive refracting power, an optical axis region of the image-side surface of the fifth lens element is convex, an optical axis region of the image-side surface of the sixth lens element is concave, an optical axis region of the image-side surface of the seventh lens element is concave, a periphery region of the image-side surface of the seventh lens element is convex. The optical imaging lens satisfies the following conditions: D11t42/AAG37?1.700 and D11t31/G34?12.000.

Abstract: The present invention relates generally to classification of biological samples, and more specifically to cell of original classification. In particular, some embodiments of the invention relate to diffuse large B cell lymphoma cell of origin classification using machine learning models. The machine learning models can be based on decision trees such as a random forest algorithm or a gradient boosted decision tree. Features for the models can be determined through analysis of variant data from plasma or blood samples from a plurality of subjects with the disease.

Abstract: An optical imaging lens includes a first lens element, a second lens, a third lens element and a fourth lens element from an object side to an image side in order along an optical axis. An optical axis region of the object-side surface of the first lens element is convex, and an optical axis region of the image-side surface of the third lens element is concave. The lens elements included by the optical imaging lens are only the four lens elements described above. Tavg is an average of four thicknesses from the first lens element to the fourth lens element along the optical axis, an Abbe number of the first lens element is ?1, and an Abbe number of the second lens element is ?2 so that the optical imaging lens satisfies: Tavg?300 ?m, and |?1??2|?30.000.

Abstract: An optical imaging lens includes a first lens element to a fourth lens element, and each lens element has an object-side surface and an image-side surface. The first lens element has negative refracting power, an optical axis region of the object-side surface of the first lens element is convex, the third lens element has negative refracting power, and an optical axis region of the image-side surface of the fourth lens element is convex. Lens elements included by the optical imaging lens are only the four lens elements described above, and the optical imaging lens satisfies the relationship of Tmax+Tmin?700.000 ?m, Tmax is a maximum thickness of the four lens elements from the first lens element to the fourth lens element along the optical axis, Tmin is a minimum thickness of the four lens elements from the first lens element to the fourth lens element along the optical axis.

Abstract: An optical imaging lens includes a first lens element to a fourth lens element, and each lens element has an object-side surface and an image-side surface. The first lens element has negative refracting power, lens elements included by the optical imaging lens are only the four lens elements described above, at least two lens elements in the optical imaging lens have positive refracting power and thicknesses of the at least two lens element along the optical axis are less than or equal to 250 microns, and the optical imaging lens satisfies the following relationships: V1+V2+V3+V4?165.000, V1 is an Abbe number of the first lens element, V2 is an Abbe number of the second lens element, V3 is an Abbe number of the third lens element, and V4 is an Abbe number of the fourth lens element.