Patent ID: 8430537
Filing Date: 2013-04-30
Classification: F21K,F21V,F21Y,G02B,H01L

Abstract:
1. A lens, comprising: a body member having an outer surface and an interior open channel extending longitudinally through the body member, the body member and the interior open channel being substantially symmetric with respect to an optical axis, the outer surface being shaped to provide total internal reflection, the body member having a first end surface region at a first end region of the open channel for accommodating a light source and a second end surface region opposite the first end surface region and surrounding a second end region of the open channel, the second end surface region including a plurality of refractive surface regions positioned around the second end region of the open channel, wherein the lens is configured to provide collimated light substantially centered with respected to the optical axis when the light source is positioned off the optical axis.