| 摘要 |
FIELD: electricity.SUBSTANCE: invention relates to the field of lighting equipment. A lighting device (1) comprises an extended flat base (2), large number of semiconductor sources (3) of light, arranged on a flat base in a longitudinal direction of the flat base, and a lens plate (4), arranged in front of semiconductor sources of light. The lens plate comprises a lens surface of light falling facing semiconductor sources of light and a lens surface of light radiation, the first lens section (5), formed on one of lens surfaces of light falling or light radiation and distributing light, radiated by semiconductor sources of light in a longitudinal direction, the second lens section (9), formed on the other one of lens surfaces of light falling or light reflection for distributing light radiated with semiconductor sources of light, in direction of width. The first lens section has a unit with a curvilinear surface comprising two or more curvilinear surfaces of a convex section, having different radii of curvature and formed adjacently with each other in a longitudinal direction. Each curvilinear surface of the convex section is arranged inside an area, which corresponds to width of each semiconductor source of light in longitudinal direction.EFFECT: increased evenness of lighting and simplified design.6 cl, 15 dwg |
