LIGHT-DIFFUSING LED LENS ADOPTING ASYMMETRIC FREE-FORM SURFACE EXPRESSION

摘要

The present disclosure relates to a light-diffusing LED lens adopting asymmetric free-form surface expression, in which the light-diffusing LED lens adopting asymmetric free-form surface expression is provided to significantly improve the uniformity ratio of illumination of the target region by controlling the light from the LED serving as a light source. In particular, a highway LED street lamp can be provided which exhibits light control and illumination efficiency suitable for highway environment conditions such as the suburbs or downtown and characteristics of traffic lanes such as one-way, four-lane or two-lane highways, and thus a new market can be developed. Both the light incident surface and the light emitting surface of the lens of the present disclosure are formed into an aspherical surface, in which an asymmetrical free-form surface is optimally utilized to enable the free-form surface to be freely modified and changed by adjusting the coefficients of the aspherical surface or the like. The lens of the present disclosure enables a numerical design and a mathematical design by means of the free-form surface, and enables a fine control to be performed by numerical control to thus improve accuracy of light control.