Patent ID: 8292469

Claim:
An LED (light emitting diode) comprising: a light emitting chip; and a lens mounted above the light emitting chip, the lens comprising a base and a convex curved circumferential surface extending upwardly from a circumferential edge of the base toward a center of the lens, an acute angle formed between a light ray generated by the light emitting chip and projecting on a point of the convex curved circumferential surface and a main axis of the lens extending vertically from a center of the light emitting chip being smaller than an acute angle formed between the normal for the point of the convex curved circumferential surface and the main axis of the lens, so that light generated by the light emitting chip and projecting on the convex curved circumferential surface is converged by the lens, a light-emission angle of the LED at 10% of a peak light intensity of the LED being ranged between 60-75 degrees deviating from the main axis of the lens.