Manufacturing method of multi-channel light emitting module and multi-channel light emitting module

摘要

Problem to be solved: to provide a method of manufacturing a multi-channel light emitting module capable of obtaining a stable optical output and a multi-channel light emitting module.Solution: this light emitting module comprises an LD 11, a first lens 12 whose one focal point coincides with the light emission point of LD 11, a second lens 14 for emitting the outgoing light from the first lens 12 as a focused light, and a third lens 4 for entering the light emitted from the second lens 14 to the optical fiber 5 .The second lens 14 is disposed on the third lens 4 side than the position where the light emitted from the second lens 14 becomes parallel light.The light emitted from the third lens 4 is converged in the optical fiber 5.Diagram