| 摘要 |
A light-emitting module includes a laser diode, a lens, and an optical fiber having an end face cut at an angle, which are co-axially disposed. The lens has an aperture eccentrically disposed opposite to the vertical direction with respect to an end face of the optical fiber. This arrangement causes light refracted by an end face of the core of the optical fiber to travel in the axial direction, which prevents reflected light from returning.
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