| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive optical tap module for optical communication, capable of realizing high coupling efficiency and reducing assembly man-hours and an assembling time.SOLUTION: The optical tap module for optical communication uses: a lens formed in a shape where a normal line at the center position of a spherical surface or an aspherical surface on the incident side end face of an optical tap lens is inclined at an angle of 5°-10°to the optical axis of the optical tap module; a lens formed in a shape where the optical axis of the spherical surface or the aspheric surface on the incident side end face of the optical tap lens is at a position shifted by 0.1 mm-0.3 mm to the optical axis of the optical tap module; and a rod lens having a reflection side end face of the optical tap lens consisting of a spherical surface or an aspherical surface. |
