Optellios, Inc.

Optical Coating Laboratories, Inc.

Optical Comb Institute, Inc.

Optical Designs, Inc.

Optical Gaging Products, Inc.

Optical Networks, Inc.

Optical Perspectives Group, LLC

Optical Perspectives Ltd.

Optical Profile, Inc.

Optical Research Associates

Optical Scientific, Inc.

Optical Shields, Inc.

Optical Technologies Italia SpA

Opticon Sensor Europe B.V.

Opticon Sensors Europe BV

Optics 1, Inc.

Optics and Vision Limited

Optics Wireless Led, Inc.

Optid, Optical Identification Technologies Ltd.

Optiment, Optical Metrology Ltd.