Special-shaped lens and high power LED road lamp shade
A special-shaped lens and curvature technology, applied in the direction of lens, lampshade, circuit, etc., can solve the problems of uneven brightness, unsuitable hemispherical light source, insufficient light brightness, etc., to improve the divergence of light, good light conversion effect, and prevent light The effect of leakage
Inactive Publication Date: 2008-12-17
孙敬玺
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The invention relates to a lens, in particular to a special shape lens and a large-power LED street lampshade. The special shape lens includes a reversed semi-ellipsoidal-like stage, a hollow spherical plane with a radius R arranged at the center of the lower plane of the reversed semi-ellipsoidal-like stage, and a hyperboloid-like surface with a certain thickness arranged on the upper part of the reversed semi-ellipsoidal-like stage in a position corresponding to the lower plane, wherein the outer concave surface of the hyperboloid-like surface is connected with the reversed semi-ellipsoidal-like stage, and the inner convex surface of the hyperboloid-like surface includes a convex surface having a planar injection similar to rectangle; four wedge-shaped bumps are symmetrically arranged on the side faces of the reversed semi-ellipsoidal-like stage; and annular inner-spherical incident light grooves with unequal cross sections are arranged on the hollow spherical plane. The low-power LED street lampshade includes a shade cover and frames arranged at the periphery, wherein the shade body is composed of a certain number of the special shape lenses arranged in matrix according to a certain rule. The invention provides the special shape lens for converting a semi-spherical light source into a rectangular area light source and the large-power LED street lampshade.
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