| 摘要 |
PURPOSE:To prevent the power down of the input into a fiber by the slippage of an optical axis in an light emitter, and prevent the inferiority in sensitiveness by sealing it while aligning a pellet and an optical lens, making the best use of the merit that the image of the pellet through the optical lens can be observed. CONSTITUTION:The pellet 5 of a stem 6 is photographed with a camera 2, and projects in on a monitor 1. At this time, it is aligned so that the pellet 5 may be positioned at the center of the monitor, and the stem is fixed in advance by a stem fixing jig 7. Next, a cap 4 is set on the stem. At this time, the center of a microlens 3 and the center position of the image 10 of the pellet through a lens 3 are slipped. Next, the cap 4 is slid on the stem, and it is positioned so that the center of the lens 3 and the center position of the image of the pellet through the lens 3 may lie upon the other, and spot welding is performed by a temporary fixing electrode 8. By this method, the optical axis alignment between the light emitter and the light receiver and the sealing can be executed, and also the optical alignment between the light emitting element and the photodetector can be performed with the same facility. |
