To provide a lens array that can reliably obtain monitor light and can achieve the facilitation of manufacture, and to provide an optical module provided with the lens array.
In the lens array, light incident on a first lens surface 11 from each light-emitting element is split by a first reflective/transmissive layer 17 towards the side of a second lens surface 12 and the side of a third lens surface 13. Monitor light included in the light split towards the side of the third lens surface 13 is emitted by the third lens surface 13 towards the side of a first light-receiving element 8. The path of light incident on a first optical surface 14a is collinear with the path of light outgoing from the second optical surface 14b.
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Takahide Ito
Yoshimi Hatanaka
Naoko Okura
Fusae Tamari
Takeyuki Suzuki