164 results about "Particle control" patented technology

The present invention generally relates to a laser processing systems for thermally processing substrates. The laser processing systems include a shield disposed between an energy source of the laser processing system and a substrate which is to be thermally processed. The shield includes an optically transparent window disposed adjacent to a cavity within the shield. The optically transparent window allows annealing energy to pass therethrough and to illuminate the substrate. The shield also includes one or more gas inlets and one or more gas outlets for introducing and removing a purge gas from the cavity within the shield. The purge gas is utilized to remove volatized or ablated components during thermal processing, and to provide a gas of predetermined composition, such as oxygen-free, to the thermally processed area.

The invention relates to a rail transit vehicle overhauling simulation training system based on a virtual scene, for which a vehicle body overhauling module, a bogie overhauling model and the like arearranged according to training content. A VR immersion type virtual reality simulation technology and a 3DMax model manufacturing tool are adopted for modeling according to a next-gen standard, and constructing a real overhauling workshop based on a three-dimensional engine. A vehicle model of each module for vehicle body overhauling is built based on a model material rendering algorithm as follows: a JanVR virtual simulation engine, and a dynamic ray algorithm and a real-time shadow advanced rendering technology are adopted, a sky box algorithm is used for simulating day-night alternating transformation, and a particle control algorithm and a volume fog are used for simulating weather change, thereby increasing scene expressiveness. The bottom layer of the engine adopts OpenAL technologyto simulate three-dimensional sound, and Doppler algorithm to simulate gradual change effect of the sound. In the aspect of physical simulation, a Bullet physical engine is adopted to simulate a physical world. By compiling a simulation logic through a script editor, a change in a scene model and environment is controlled, and various interaction and dynamic effects are realized.