LED MODULE AND LENS MOUNTED THEREON

摘要

A lens has a plurality of first, second, and third optical regions. The first, second and third optical regions are arranged in sequential order. Space angle defined between each first, second, and third optical region and an optical axis of the lens are different from each other. Each first, second and third optical region includes a refracting surface and a reflecting surface which are arranged in different planes. The invention also relates to an LED module having the lens described above.

主权项

1. A lens, comprising:
an optical axis at a radial center of the lens; a placing point intersecting with the optical axis and a bottom of the lens; first, second, and third, optical regions defined in the lens; wherein an angle defined between the optical axis and a imaginary line defined between the placing point and a point within the second optical region is larger than an angle defined between the optical axis and a imaginary line defined between the placing point and a point within the first optical region; wherein an angle defined between the optical axis and a imaginary line defined between the placing point and a point within the third optical region is larger than an angle defined between the placing point and the imaginary line defined between the placing point and the point within the second optical region; wherein the first, second, and third optical region each have both reflecting surfaces and refracting surfaces cooperating with the reflecting surfaces.