| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable a light-emitting device and a light-receiving device to be improved in insulating properties and light transmission properties between them and to have their optical axes coincide easily with each other. SOLUTION: A rod 10 of a light-emitting part 10, where a light-emitting device is embedded is inserted into a hole 26 provided to a light-receiving part 20 in which a light-receiving device 23 is embedded, and rods 27a and 27b of the light-receiving part 20 are each inserted into holes 17a and 17b provided to the light-emitting part 10, whereby the light-emitting part 10 and the light- receiving part 20 are fixed together. As a result of this setup, the optical axis of the light exiting window 12 coincides with that of the light-incident window of the light-receiving part 20.</p> |
