1. 3M Company
2. Abrisa Technologies
3. Beneq Oy
4. DuPont de Nemours Inc.
5. II-VI Incorporated by Coherent Corp.
6. Newport Corporation
7. Nippon Sheet Glass Co. Ltd.
8. Optical Coating Technologies
9. PPG Industries Inc.
10. Quantum Coating Inc.
11. Reynard Corporation
12. Schott AG
13. Surface Optics Corporation
14. ZEISS International
15. Zurich Instruments AG
16. Zygo Corporation