Abstract: A keyboard key device includes a keycap and a substrate unit. The substrate unit includes a light-emitting component, a light guide plate, and a light transmission plate. The light guide plate has first and second end surfaces, and at least one light-condensing hole. The first end surface is formed with an uneven microstructure for diffuse reflection of light rays. The light transmission plate has first and second side surfaces, and an outer reflective layer coated on the second side surface. A portion of light rays emitted from the light-emitting component and into the light transmission plate pass through the outer reflective layer, and the remainder of the light rays are reflected by the outer reflective layer.

Abstract: A keyboard key device includes a keycap and a substrate unit. The substrate unit includes a light-emitting component, a light guide plate, and a light transmission plate. The light guide plate has first and second end surfaces, and at least one light-condensing hole. The first end surface is formed with an uneven microstructure for diffuse reflection of light rays. The light transmission plate has first and second side surfaces, and an outer reflective layer coated on the second side surface. A portion of light rays emitted from the light-emitting component and into the light transmission plate pass through the outer reflective layer, and the remainder of the light rays are reflected by the outer reflective layer.

Abstract: A backlight module adapted for use in an input device includes a circuit board, a light guide plate, a plurality of light-emitting elements, and a reflective structure. The light guide plate disposed on the circuit board is formed with a microstructure. The reflective structure includes a reflective plate disposed on the light guide plate opposite to the circuit board, and a first reflective layer disposed on the reflective plate opposite to the light guide plate. The first reflective layer is configured to allow a portion of a light emitted from the light-emitting elements to pass therethrough, and to allow a portion of the light to be reflected back to the light guide plate and then be diffuse reflected by the microstructure formed on the light guide plate.

Abstract: A computer-implemented method and system automatically detects stress singularity in a three-dimensional (3D) computer-aided design (CAD) model. A potential area of high stress is detected. A finite element mesh of the 3D CAD model is refined, at least in the potential area of high stress, after which, whether the high stress value converges is determined. A user is alerted that the potential area of high stress is an area having one or more elements of stress singularity. Suggestions are made regarding how to eliminate the stress singularity and the user is enabled to modify the design of the 3D CAD model to eliminate the stress singularity.

Abstract: A computer-implemented method and system automatically creates data for use by a computer-aided simulation process. The method and system determine that a CAD model component represents a real-world object that is a fastener. The method and system automatically analyze the CAD component and derive properties for use by the simulation process. The derived properties include size data, location data, and material type data. The method and system automatically calculate a zone of influence of the CAD component on another CAD component. The simulation process utilizes at least one of the properties to calculate the zone of influence to simulate a real-world assembly of which the fastener is a component.

Abstract: A method of cloning models of a physical fastener may include a computer-aided design (CAD) system receiving one or more instructions that identify a base model of a physical fastener. For each of one or more socket models having at least one characteristic corresponding to the base model, the method may further include generating a clone fastener model based on the base model of a physical fastener and at least one physical property of the one or more socket models.

Abstract: A computer-implemented method and system automatically detects stress singularity in a three-dimensional (3D) computer-aided design (CAD) model. A potential area of high stress is detected. A finite element mesh of the 3D CAD model is refined, at least in the potential area of high stress, after which, whether the high stress value converges is determined. A user is alerted that the potential area of high stress is an area having one or more elements of stress singularity. Suggestions are made regarding how to eliminate the stress singularity and the user is enabled to modify the design of the 3D CAD model to eliminate the stress singularity.

Abstract: A method of cloning models of a physical fastener may include a computer-aided design (CAD) system receiving one or more instructions that identify a base model of a physical fastener. For each of one or more socket models having at least one characteristic corresponding to the base model, the method may further include generating a clone fastener model based on the base model of a physical fastener and at least one physical property of the one or more socket models.

Abstract: A computer-implemented method and system automatically creates data for use by a computer-aided simulation process. The method and system determine that a CAD model component represents a real-world object that is a fastener. The method and system automatically analyze the CAD component and derive properties for use by the simulation process. The derived properties include size data, location data, and material type data. The method and system automatically calculate a zone of influence of the CAD component on another CAD component. The simulation process utilizes at least one of the properties to calculate the zone of influence to simulate a real-world assembly of which the fastener is a component.

Abstract: Metallic devices are frequently used in dental treatments, such as orthodontic archwires, rackets, or dental mini-screws. This invention provides metallic dental devices with a color of tooth or close to tooth, and their preparation methods.