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| Xtal Optronics |   | |
| Brighten Optics Ltd. |   | ||
| Calphotonics Ltd. |   | ||
| Casix, Inc. |   | ||
| CVI Laser Corporation |   | ||
| Dynasil Corporation |   | ||
| Laser Optics, Inc. |   | ||
| Esco Products |   | ||
| G-S PLASTIC OPTICS |   | ||
| Heussner Optics, Inc. |   | ||
| Hiteck Int. Ltd. |   | ||
| IMPEX High - Tech |   | ||
| Melles Griot Optics |   | ||
| Janos Technology |   | ||
| JML Optical Industries, Inc. |   | ||
| Knight Optical |   | ||
| Victor Kyburz AG / Kyburz Sapphire |   | ||
| LaCroix Optical Co. |   | ||
| Laurel Industries |   | ||
| Moonlight Optics |   | ||
| Nanjing Saifei Electro-Optics Co., Ltd. |   | ||
| Optical Components, Inc. |   | ||
| Optosigma |   | ||
| Oriel Corporation |   | ||
| PFG Optics |   | ||
| Sunex Inc. |   | ||
| SwissOptic AG |   | ||
| UQG Optics Ltd. |   | ||
| WAHL Optoparts GmbH |   | ||
| Daheng Optical Instrument Factory |   | ||
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