Patent ID: 8764260

Claim:
A light-guiding cover, integrally formed in solid one piece for guiding light beams emitted from at least one light-emitting diode (LED), comprising: a light-guiding portion, wherein a light input surface is formed on one end of the light-guiding portion and orientated toward an LED, wherein the light input surface transmits light beams emanating from the LED into the light-guiding portion, wherein the light-guiding portion—further has a connecting surface; and a light output portion extending from another end of the light-guiding portion, wherein the light output portion has an optical surface extending from the connecting surface, wherein the overall profile shape of the light output portion is tapered away from the light-guiding portion to an upper end portion of the light output portion away from the LED; wherein the light-guiding cover is substantially symmetrical around a central axis, each cross-section of the light output portion normal to the central axis is substantially circular, wherein the diameters of the cross-sections of the light output portion decrease in a direction away from the light-guiding portion, and the optical surface allows the light beams emanating from the LED to reflect or pass therethrough, and wherein the light beams emanating from the LED are refracted by the light input surface and enters the light-guiding portion for light reflection from one side to another side of the optical surface across the central axis to exit from the light-output portion, wherein at least one virtual LED is produced on the central axis in the upper end portion of the light output portion away from the LED by the light beams transmitted by the light input surface into the light-guiding portion.