光發送器

optical transmitter

light / ray / CL:道[dao4] / bright / only / merely / to use up

to send out / to show (one's feeling) / to issue / to develop / to make a bundle of money / classifier for gunshots (rounds)

to transmit / to dispatch / to issue (an official document or credential)

to deliver / to carry / to give (as a present) / to present (with) / to see off / to send

transmitter

device / tool / utensil / CL:臺|台[tai2]