Abstract: The present application provides a method for determining a stability of a welding equipment. The method includes acquiring initial welding images of the welding equipment; obtaining at least one welding spot position of each of at least one welded workpiece in each initial welding image by processing the initial welding images; determining a welding center position of each welded workpiece based on the at least one welding spot position of each welded workpiece, and obtaining welding center positions of all welded workpieces comprised in the initial welding images; and determining a stability of welding equipment based on the welding center positions of all welded workpieces. The method determines whether the welding equipment is stable by analyzing the welding images, thereby improving an accuracy of a detection of a stability of the welding equipment.

Abstract: A circuit board structure includes a circuit substrate having opposing first and second sides, a redistribution structure disposed at the first side, and a dielectric structure disposed at the second side. The circuit substrate includes a first circuit layer disposed at the first side and a second circuit layer disposed at the second side. The redistribution structure is electrically coupled to the circuit substrate and includes a first leveling dielectric layer covering the first circuit layer, a first thin-film dielectric layer disposed on the first leveling dielectric layer and having a material different from the first leveling dielectric layer, and a first redistributive layer disposed on the first thin-film dielectric layer and penetrating through the first thin-film dielectric layer and the first leveling dielectric layer to be in contact with the first circuit layer. The dielectric structure includes a second leveling dielectric layer disposed below the second circuit layer.

Abstract: An optical system affixed to an electronic apparatus is provided, including a first optical module, a second optical module, and a third optical module. The first optical module is configured to adjust the moving direction of a first light from a first moving direction to a second moving direction, wherein the first moving direction is not parallel to the second moving direction. The second optical module is configured to receive the first light moving in the second moving direction. The first light reaches the third optical module via the first optical module and the second optical module in sequence. The third optical module includes a first photoelectric converter configured to transform the first light into a first image signal.

Abstract: A brush holding device includes first and second holders to respectively hold two ends of a brush mandrel of a wafer cleaning brush. The second holder includes a second housing, a second inner case mounted inside the second housing, a second bearing unit mounted inside the second inner case, and a hollow second shaft journaled in the second bearing unit and having a cleaning liquid passage. The second inner case is made of plastic, such as, polyformaldehyde, and has a retaining part extending around and projecting outwardly from an outer peripheral surface of the second inner case to contact an inner peripheral surface of the second housing. The retaining part is formed as one piece with the second inner case.

Abstract: A safety sinker includes a sinker connected to a fish line through a sinker coupler, wherein the sinker coupler may be pulled, by means of a fish line, to disconnect the sinker from the fish line when the sinker is squeezed in between rocks or somethings during fishing. The sinker coupler includes a fork end having two semi-sphere members made thereon for connecting the sinker when they are squeezed to form into a spherical configuration and inserted into the inner chamber of the sinker. The two semi-sphere members may be squeezed to form into a spherical configuration again, by means of a pull force through the fish line, so as to slip away from the sinker and to disconnect the fish line from the sinker.