O'Keeffe Michael G.
O'Callaghan Fred G.
O'Donohue Stephen J
O'Neil Alan W.
Obana Haruo
Office Galileo S.p.A.
Ohio Aerospace Institute
Ohtake Masatoshi
Ohte Akira
Okada Yoshimichi
Okumura Eisuke
Oma Peter
On-Line Technologies Inc
Onoda Yoshihto
Optical Coherence Technologies, Inc.
Optical Technologies, Incorporated
Optiphase, Inc.
Opto Produkte AG
Optodyne, Inc.
Optoplan AS