Patent ID: 8337052

Claim:
An LED lamp comprising: an LED having an optical axis; a lens covering the LED, the lens comprising a light incidence surface adjacent to the LED, a light emission surface opposite to the light incidence surface; wherein a first imaginary plane and a second imaginary plane intersect at the optical axis of the LED, the light emission surface of the lens is symmetric about the first and second imaginary planes, respectively; in the first imaginary plane, light emitted from the light emission surface distribute regions which a light emitting angle of the LED lamp ranges from 0° to about 45°; in the second imaginary plane, light emitted from the light emission surface distribute regions which a light emitting angle of the LED lamp ranges from 0° to about 75°; and wherein in the second imaginary plane, the luminous intensity of the LED lamp decreases gradually with the light emitting angle of the LED lamp increasing from 45° to 75°.