52results about How to "Improve focus quality" patented technology

The invention discloses an ultrashort pulse laser scanning device. It includes acoustooptic modulator and 2-D acousto-optic deflector which are at the same light path, the 2-D acousto-optic deflector is constructed with two acousto-optic deflectors, the included angle between the acousto-optic deflector and the acoustooptic modulator is 45+-5 degree. The modulating frequency of the acoustooptic modulator is fAOM=f+-10%f, the distance between the acoustooptic modulator and 2-D acousto-optic deflector is D=L+-10%L. When acousto-optic deflector is used to 2-D scan the laser, the device can compensate the spatial dispersion and temporal dispersion introduced by using acousto-optic deflector to scan ultrashort pulse laser beam. The device possesses simple structure, light path is easy to adjust, and it fits for the fields of femtosecond laser storage, imaging and laser micro-processing, specially the random scan of the laser beam.

The invention discloses a coke cutter which comprises a rack, a motor, a gearbox, a coke cutting box, a bearing pedestal set, a master coke cutting roller and a slave coke cutting roller. The motor, the gearbox, the coke cutting box and the bearing pedestal set are arranged on the rack. The master coke cutting roller and the slave coke cutting roller are arranged in the coke cutting box in parallel through the bearing pedestal set. The motor is in transmission connection with the gearbox, and an output shaft of the gearbox is in transmission connection with the master coke cutting roller. The master coke cutting roller and the slave coke cutting roller each comprise a roller shaft, a plurality of pull rods, a roller shaft sleeve arranged on the roller shaft through an end sleeve, a plurality of gear rings arranged on the roller shaft sleeve, spacer rings arranged at the positions, between the adjacent gear rings, of the roller shaft sleeve, and end discs arranged at the positions, on the outer sides of the gear rings at the two ends, of the roller shaft sleeve. The end discs, the gear rings and the spacer rings are in fastened connection through the pull rods and pull rod nuts. Each gear ring comprises a disc-shaped gear ring disc body and a plurality of main cutter teeth evenly distributed on the periphery of the gear ring disc body. Slope faces are formed on three sides of the main side face of each main cutter tooth, and the contact position of every two adjacent slope faces is of a corner angle structure. The gear rings of the master coke cutting roller and the gear rings of the slave coke cutting roller are staggered, and the coke cutter is good in coke cutting quality.