LIGHT-DISSIPATING LENS FOR TRAFFIC LIGHTS Russian patent published in 2007 - IPC G02B3/08 G08G1/95 

FIELD: light signalization.

SUBSTANCE: light-dissipating lens of traffic lights post is made of transparent material in form of protection casing. External surface of casing is convex. Elementary lens cells are made onto internal surface; any cell is formed by recess in material of casing. Recess is made in form of curve, going deeper in down to up to direction; recess is disposed in plane of vertical crossing. Front surface of any cell has shape of rectangle 4. Recess is formed by concave surface, which surface forms in vertical cross section the first curve 5 which has shape of first ellipse. In horizontal cross-section the cells form second curve 6 which has shape of half of second ellipse and it goes out to front surface of cell to adjoin its face and lower sides. Lengths of shorter half-axes 7 and 8 of first and second ellipses are equal and they correspond in their value to maximal depth of recess. Length of face sides of front surface of cell makes value which is equal or longer than length of bigger half-axis of first ellipse. Length of lower and top sides of front surface of cell corresponds to length of bigger axis 10 of second ellipse.

EFFECT: improved portion of profitable used radiation; angular distribution of light in horizontal and vertical planes.

3 cl, 4 dwg