An optical information transmitting device for transmitting information on a light beam emitted by a light source, includes an electronic circuit board, and an optical input/output port mounted on the electronic circuit board. The optical input/output port has a glass substrate attached to the electronic...http://www.google.ca/patents/US5500523?utm_source=gb-gplus-sharePatent US5500523 - Optical information transmitting device and method of manufacturing same
