LIGHT-EMITTING MODULE AND MULTICHANNEL LIGHT-EMITTING MODULE

摘要

PROBLEM TO BE SOLVED: To provide a light-emitting module and a multichannel light-emitting module that are capable of obtaining stable optical output.SOLUTION: A light-emitting module comprises: LDs 11; first lenses 12 one focal point of which coincides with a light emitting point of the LDs 11; second lenses 14 each that, as divergent light, emit light emitted from the first lenses 12; third lenses 4 that make light emitted from the second lenses 14 incident on an optical fiber 5; and a TEC (Thermo-Electric Cooler) 20 mounted with the LDs 11, the first lenses 12, and the second lenses 14. The second lenses 14 are disposed nearer to the first lens 12 side than a position at which the light emitted from the second lenses 14 becomes parallel light. Light emitted from the third lenses 4 is condensed at an inside of the optical fiber 5.SELECTED DRAWING: Figure 7