LENS, LIGHT FIXTURE, AND MOTOR VEHICLE HIGH BEAM ILLUMINATION OPTICAL SYSTEM

A lens, a light fixture, and a motor vehicle high beam illumination optical system. The lens comprises an incident surface (1) for light to go into the lens, an exit surface (2) for the light inside the lens to exit (2), and a reflection area provided between the incident surface (1) and the exit surface (2). The reflection area is divided into a first reflection area (3) and a second reflection area (4); the first reflection area (3) is close to the incident surface (1); the second reflection area (4) is close to the exit surface (2); the first reflection area (3) and the second reflection area (4) form a step structure. The lens implements more uniform illumination to an area. Moreover, compared with the lens of a conventional structure, this lens has a smaller size while achieving the same illumination effect, thereby reducing the use of lens manufacturing materials; in addition, the lens also facilitates technical operations such as injection molding, thereby reducing injection molding difficulties and sh