Abstract: A lens unit, a lens for a low-beam illumination module, a low-beam illumination module and a vehicle. The lens unit includes a rear surface and a front surface; the lens unit has a focal line, and the focal line is a straight line perpendicular to a light emitting direction of the lens unit; the rear surface and the front surface are adapted to project light rays passing through the focal line into parallel light rays, and the front surface is a free-form curved surface. The lens unit has the optical characteristics of a cylindrical lens, and is able to cause parallel incident light to be focused into a line instead of a focal point upon passing through the lens unit.

Abstract: A lens unit, a lens for a low-beam illumination module, a low-beam illumination module and a vehicle. The lens unit includes a rear surface and a front surface; the lens unit has a focal line, and the focal line is a straight line perpendicular to a light emitting direction of the lens unit; the rear surface and the front surface are adapted to project light rays passing through the focal line into parallel light rays, and the front surface is a free-form curved surface. The lens unit has the optical characteristics of a cylindrical lens, and is able to cause parallel incident light to be focused into a line instead of a focal point upon passing through the lens unit.

Abstract: A lens structure includes a lens body; an outer surface of the lens body is provided as a single curved surface; and an inner surface of the lens body is provided thereon with at least two inner curved surfaces that are continuously connected. In the present solution, through the design of the plurality of inner curved surfaces, the light pattern and the energy distribution can be controlled flexibly, the applicability of the lens design is maximally greatly improved, and meanwhile, a truly feasible solution is provided for the defect where in some scenes it is impossible for the existing conventional structure to distribute light. In addition, multiple functions may be implemented at the same time, such as, low beam, high beam, bending and fog lamp; and multiple functions are combined into one lens module for implementation.

Abstract: A lens structure includes a lens body; an outer surface of the lens body is provided as a single curved surface; and an inner surface of the lens body is provided thereon with at least two inner curved surfaces that are continuously connected. In the present solution, through the design of the plurality of inner curved surfaces, the light pattern and the energy distribution can be controlled flexibly, the applicability of the lens design is maximally greatly improved, and meanwhile, a truly feasible solution is provided for the defect where in some scenes it is impossible for the existing conventional structure to distribute light. In addition, multiple functions may be implemented at the same time, such as, low beam, high beam, bending and fog lamp; and multiple functions are combined into one lens module for implementation.

Abstract: A water meter casing and manufacturing process thereof are provided. The water meter casing comprises a middle casing (1), a water inlet port (2) and a water outlet port (3), which are separate parts, wherein a water inlet (4) and a water outlet (5) where the water inlet and outlet ports (2, 3) are arranged are respectively provided at the two sides of the middle casing (1), and a support ring (6) is also provided in the inner cavity of the middle casing (1). The manufacturing process of the water meter casing relates to a method of forming the water meter casing by high pressure hydraulic bulging. The manufacturing process is simple and easy to carry out, and it presents the advantage of low cost.

Abstract: A water meter casing and manufacturing process thereof are provided. The water meter casing comprises a middle casing (1), a water inlet port (2) and a water outlet port (3), which are separate parts, wherein a water inlet (4) and a water outlet (5) where the water inlet and outlet ports (2, 3) are arranged are respectively provided at the two sides of the middle casing (1), and a support ring (6) is also provided in the inner cavity of the middle casing (1). The manufacturing process of the water meter casing relates to a method of forming the water meter casing by high pressure hydraulic bulging. The manufacturing process is simple and easy to carry out, and it presents the advantage of low cost.