LENS AND ILLUMINATION DEVICE INCLUDING THE LENS

摘要

Various embodiments may relate to a lens for an illumination device, including an incident surface, an emergent surface, and a reflective surface connected between the incident surface and the emergent surface. The lens includes a first axis as an optical axis of the lens, a second axis perpendicular to the first axis and extending in a longitudinal direction of the lens, the first axis and the second axis defining a symmetrical surface of the lens, and a third axis perpendicular to the symmetrical surface, a first portion of light from a light source is incident upon the incident surface, refracted by the emergent surface, and then emerges to form a first light beam, and a second portion of light from the light source is incident upon the incident surface, reflected by the reflective surface, refracted by the emergent surface, and then emerges to form a second light beam.

主权项

1. A lens for an illumination device, comprising:
an incident surface, an emergent surface, and a reflective surface connected between the incident surface and the emergent surface, wherein the lens comprises: a first axis as an optical axis of the lens; a second axis perpendicular to the first axis and extending in a longitudinal extending direction of the lens, wherein the first axis and the second axis define a symmetrical surface of the lens; and a third axis perpendicular to the symmetrical surface, wherein a first portion of light from a light source is incident upon the incident surface, refracted by the emergent surface, and then emerges to form a first light beam, and a second portion of light from the light source is incident upon the incident surface, reflected by the reflective surface, refracted by the emergent surface, and then emerges to form a second light beam, wherein the first light beam and the second light beam emerge in a direction away from the symmetrical surface, such that, viewed from a cross section perpendicular to the symmetrical surface, no emergent light exists in a predetermined angle range on two sides of the symmetrical surface.