A lighting device includes a prism plate, an anti-glare cup, a housing, a light source board, a heat dissipation assembly, and a lenses plate. The prism plate includes a refraction optical component. For example, make many micro-lenses on a surface of a transparent plastic material or a transparent plastic plate by compression molding, cutting, and injection molding. The combination of these optical lenses adjusts the beam angle of light to fulfill users' needs. The surface material of the anti-glare cup features on preventing visual glare. The housing is used to fasten the prism plate and the anti-glare cup. The light source board is for installation of a LED module. Besides, the heat dissipation assembly carries the light source board. The heat dissipation assembly is connected to the housing.