Patent ID: 7302181
Filing Date: 2007-11-27
Classification: H01L

Abstract:
1. A single lens multi-channel optical communication transmitter, comprising: at least first and second light sources, the first light source being configured to emit light of a first wavelength, the second light source being configured to emit light of a second wavelength different from the first wavelength; the first and second light sources being disposed along a vertical axis; and a single lens having an optical axis, a vertical axis and the horizontal axis associated therewith, the horizontal and vertical axes being perpendicular to one another and also to the optical axis, the lens being positioned in respect of the first and second light sources to collimate and direct forwardly light emitted thereby, the lens comprising an outer lens surface located distally from the first and second light sources, the outer lens surface having an aspherical profile along the vertical axis and a spherical profile along the horizontal axis, the outer lens surface forming a convex shape of positive slope at all points along at least central portions of the aspherical and spherical profiles thereof, the lens covering and enveloping the first and second light sources; wherein the first and second light sources are positioned in respect of the optical axis and the lens such that a combined light intensity profile from the first and second light sources is approximately symmetrical about the optical axis, and the lens is shaped and configured to enhance light intensity near the optical axis.