130 results about "Vertex point" patented technology

A multi-polarized forward feed and dish configuration for transmitting and / or receiving radio frequency (RF) signals is disclosed. The configuration comprises a conductive reflector dish, having a focal point and a vertex point, and a multi-polarized forward feed element positioned substantially at the focal point. The forward feed element comprises at least two radiative members each having a first end and a second end. The second ends of the radiative members are electrically connected at an apex point and are each disposed outwardly away from the apex point toward the vertex point at an acute angle relative to an imaginary plane intersecting the apex point.

The invention discloses a method and a device for implementing a mobile terminal 3D (three dimensional) model. The method includes: allowing a terminal parser to acquire and parse a 3D description file, wherein the 3D description file comprises maximum and minimum values, total number of vertex coordinates, the vertex coordinates, texture coordinates and texture image information of an x-axis, a y-axis and a z-axis of material information; reading the maximum and minimum values of the x-axis, the y-axis and the z-axis; reading the total numbers of the vertex coordinates, distributing cache spaces according to the total number of the vertexes and storing the specific vertex coordinates and the texture coordinates information into the cache spaces; based on the maximum and minimum values of the x-axis, the y-axis and the z-axis, initializing a renderer; querying the 3D description file and judging whether a triangular drawing mode exists or not, and if yes, drawing the corresponding 3D model based on the triangular drawing mode and the total number of the vertex coordinates, the vertex coordinates, the texture coordinates and texture image information.

A method for developing a virtual representation of an x-ray diffraction imaging system includes generating a symmetry axis, generating a conical shape having a base diameter, a vertex angle α, and a vertex point, locating the vertex point at an origin point on the symmetry axis, and extending a first line and a second line between the vertex point and the conical base such that the first line is separated an angle dφ from the second line in an azimuthal direction around the conical base.

The invention discloses a fan impeller. The fan impeller comprises a rear impeller disc and blades, the bottoms of the blades are installed on the disc surface of the rear impeller disc, and the blades are sequentially arranged in the circumferential direction of the rear impeller disc; the outer side edge of each blade serves as an air outlet edge, wherein an included angle alpha formed between the projection of the outer side edge on the outer circumference face of the rear impeller disc and the normal line of the rear impeller disc is larger than or equal to minus 60 degrees and smaller than or equal to 60 degrees; the inner side edge of each blade serves as an air inlet edge, wherein an included angle beta formed between the projection of the inner side edge on the outer circumference face of the rear impeller disc and the normal line of the rear impeller disc is larger than or equal to 20 degrees and smaller than or equal to 70 degrees; an included angle theta formed between a connecting line between the bottom end of each outer side edge and the circle center of the rear impeller disc and a connecting line between the bottom end of each inner side edge and the circle center of the rear impeller disc is larger than or equal to 10 degrees and smaller than or equal to 65 degrees, and the vertical height h1 of the vertex point of each outer side edge relative to the rear impeller disc is smaller than the vertical height h2 of the vertex point of each inner side edge relative to the rear impeller disc. The invention further discloses a fan adopting the fan impeller. The fan impeller has the advantages of being novel in structure and good in pneumatic performance; the fan adopting the impeller has the advantages of being compact in structure, high in fan efficiency and air pressure and large in generated negative pressure gradient.