Abstract: A laser aiming light, comprising a mount, laser mechanisms are respectively arranged on left and right sides of an interior of the mount, exteriors of the two laser module casings are arranged on the left and right sides of the interior of the mount, an exterior of the laser tube is fixed on the rear end of the laser module casing, the rear end of the elastic ring is arranged on the front end of the laser tube, the rear end of the imaging lens is arranged on the front end of the elastic ring, the rear end of the condenser lens is arranged on the front end of the elastic ring, the outer thread of the lens pressure ring is connected to the inner front side of the laser module casing, the exterior of the elastic ring is arranged inside the laser module casing.

Abstract: A gun light positioned by a sliding guide rail, comprising a light holder, a fixing plate is fixedly connected to left side of front part of the light holder, and a locking plate is slidably connected to the inside of the locking plate groove, the inside of the locking plate is threadedly connected with guide rail locking bolts by the screw holes, the front part of the light holder is provided with a positioning slider, the left part of the positioning slider is provided with a wave-shaped clamping slot, the rear part of the positioning slider is fixedly connected with a plurality of sliders, the front part of the light holder is provided with a screw hole, a limiting bolt is threadedly connected inside the screw hole, a groove is arranged inside the fixing plate, and a positioning steel ball is arranged inside the groove.

Abstract: A mapping method, an electronic device and a readable storage medium, which relate to the fields of map generation technologies, indoor localization technologies, are disclosed. The mapping method includes: acquiring current frame point cloud data of a target scenario to obtain a submap sequence and an active submap corresponding to the current frame point cloud data; acquiring initial posture data of the current frame point cloud data, and obtaining target posture data of the current frame point cloud data according to the initial posture data and the active submap; obtaining at least one posture constraint condition according to the target posture data of the current frame point cloud data and the submap sequence; and performing posture optimization on the submap sequence according to the at least one posture constraint condition, and obtaining a mapping result of the target scenario according to the submap sequence after the posture optimization.

Abstract: A method for localization and mapping is provided. The method includes: determining a first estimated pose of a current frame based on a matching result of scan data of the current frame and a first submap and a pose of the first submap, where the first submap includes scan data of a common-viewing-angle frame; adding the scan data of the current frame into the first submap; determining a plurality of candidate poses around the first estimated pose; matching the scan data of the current frame with the second submap based on each candidate pose and a pose of each second submap to determine a score of each candidate pose, and determining a second estimated pose of the current frame corresponding to the second submap; determining a third estimated pose from the at least one second estimated pose; updating the scan data based on the third estimated pose.

Abstract: A movable position-limiting quick-release gun light, comprising a light main body, a bottom end of the light main body is fixedly connected with a support plate, and the left and right sides of which are slidable connected to the top of a base, the middle part of the fixing plate is fixedly connected with a tightening seat, the middle part of the right end of which is fixedly connected to the left end of the tightening rod, and the right end of which is rotatably connected with an tightening handle through a rotating shaft, the front and rear parts of the right end of the tightening seat are fixedly connected to the left end of the ejector rod. The structure of the gun light is simple, the maintenance and disassembly are easy, and the use is very convenient.

Abstract: The invention relates to a novel synthesis method for forming superacid functional molecules that include monomers, as well as new polymers and copolymers formed from the monomers, and uses for these superacid molecules, polymers, and copolymers. The superacid molecules have an alpha, alpha-difluorosulfonic acid functionality that can be obtained by a reaction between various Grignard reagents and an alkyl(2-fluorosulfonyl)-1,1-difluoroacetate, such as methyl (2-fluorosulfonyl-1,1-difluoroacetate. The molecules, polymers and copolymers would be expected to have enhanced ion conductivity, and would be useful in a variety of applications, including as ion-conductive materials, surfactants, and ion exchange resins.

Abstract: The invention relates to a novel synthesis method for forming superacid functional molecules that include monomers, as well as new polymers and copolymers formed from the monomers, and uses for these superacid molecules, polymers, and copolymers. The superacid molecules have an alpha,alpha-difluorosulfonic acid functionality that can be obtained by a reaction between various Grignard reagents and an alkyl(2-fluorosulfonyl)-1,1-difluoroacetate, such as methyl(2-fluorosulfonyl-1,1-difluoroacetate. The molecules, polymers and copolymers would be expected to have enhanced ion conductivity, and would be useful in a variety of applications, including as ion-conductive materials, surfactants, and ion exchange resins.