光接收器

optical receiver

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

to receive / to answer (the phone) / to meet or welcome sb / to connect / to catch / to join / to extend / to take one's turn on duty / to take over for sb

reception (of transmitted signal) / to receive / to accept / to admit / to take over (e.g. a factory) / to expropriate

to receive / to accept / to collect / to put away / to restrain / to stop / in care of (used on address line after name)

receiver

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