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
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[0043] Example one: see Figure 1~Figure 24 In the figure, the special-shaped lens contains an inverted approximate semi-ellipsoidal table 3, in the center of the lower plane of the inverted approximate semi-ellipsoidal table 3, a hollow spherical surface 5 with a radius of R is set, and the upper part of the inverted approximate semi-ellipsoidal table 3 and below it There is an approximate hyperboloid with a certain thickness on the corresponding position of the plane. The outer concave surface 11 of the approximate hyperboloid is connected with the inverted approximate semi-ellipsoid table 3, the projection of the approximate hyperboloid is square, and the inner convex surface of the approximate hyperboloid 1 is in the middle. Contains a convex surface 2 whose plane projection is approximately rectangular, and the four corners of the convex surface 2 are arc transitions.
[0044] Four wedge-shaped protrusions 4 are symmetrically provided on the side surface of the inverted semi-...
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