High efficiency light for use in a traffic signal light, using L

Details High efficiency light for use in a traffic signal light, using L High efficiency light for use in a traffic signal light, using L

1998-03-13

2000-02-01

O'Shea, Sandra

Illumination

Light emitting diode

362267, 362268, 362331, 362335, 116 63R, 340907, F21Q 300, G08G 107

Patent

active

060194936

ABSTRACT:
A high efficiency light which includes a conical lamp shade having a light reflecting inside wall, a circuit board mounted on inside the lamp shade and holding a set of LEDs, a hemispherical inner lens covered on the circuit board over the LEDs inside the lamp shade, the hemispherical inner lens having a center convex lens portion and a plurality of annular convex lens portions around the center convex lens portion, a flat intermediate lens covered on the front open side of the lamp shade, the flat intermediate lens having a center convex lens portion and a plurality of annular biconvex lens portions around the center convex lens portion, and a hollow rounded outer lens mounted on the front open side of the lamp shade over the flat intermediate lens and sealed by a packing ring, the hollow rounded outer lens having a center convex lens portion, a plurality of annular convex lens portions around the center convex lens portion, and a plurality of beehive-like convex lens portions around the annular convex lens portion.

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