Ohnuma Kazuhiko
Ohtomo Funio
Okada Kohichi
Okashita Toshihiro
Okazaki Yasuhiro
Okinishi Satoru
Oliver Jeffrey
Olivier Scot S.
Olympus Opitical Co., Ltd.
Ono Shigeaki
Ono Tachio
Ontest Corporation
Ophir Yoav
Optiko Scientific Ltd.
Optikon Oftalmologia S.p.A.
Optimedica Corporation
Opto Electronica S/A
Opto Eletronics S/A
Optos PLC
OPTOS Public Limited Company