Optical system for batwing distribution

摘要

A radiation distribution system designed to produce a batwing distribution. The system may be used with radiative sources emitting in the visible spectrum or in other spectra. The system comprises a specially shaped lens disposed over a radiative source, such as an LED, for example. The lens and source are arranged between two reflector bodies, both of which have an elongated reflective surface that faces the source. The reflector bodies each have two different reflective surfaces that face outward and away from each other. The lens and both reflective surfaces work in concert to redirect a portion of the emitted radiation to create the desired batwing distribution. Several sources may be arranged linearly between a single pair of reflector bodies on a common surface to create a linear array of sources. Likewise, multiple linear arrays may be combined to form a two-dimensional array. In the two-dimensional configuration, linear arrays of sources are disposed on both sides of a reflector body, so that both of the reflective surfaces are utilized.

主权项

1. A radiation distribution system, comprising:
a lens along an x-axis and on a mount surface, said lens comprising a width along a y-axis, wherein said y-axis is perpendicular to said x-axis, and a height along a z-axis perpendicular to both the x-axis and the y-axis, said lens comprising a dielectric surface and comprising:
a width along a y-axis, wherein said width of said lens is tapered inward toward the middle of said lens;a middle section comprising a concave center region that is tapered in along both the y-axis and the z-axis, said lens configured such that at least some emitted light initially impinging on said middle section of said lens is emitted through a surface of said middle section of said lens; andtwo rounded end sections, each of said rounded end sections extending farther away from said mount surface in a direction parallel to the z-axis than said middle section, one of said end sections on each side of said middle section; and at least two elongated reflective surfaces external to said lens and proximate to said lens, said elongated reflective surfaces comprising a length along said x-axis, a width along a y-axis, and a height along a z-axis, and wherein said length is larger than each of said width and said height; and wherein light emitted from a radiative source interacts with said two rounded end sections of said lens and said elongated reflective surfaces to yield a batwing distribution pattern.