Dip coating machine with variable coating angle

http://www.inm-gmbh.de

Contact:
Prof. Dr. M. A. Aegerter,
Coating Technology
Department
Tel.: ++49-681-9300-317
Fax: ++49-681-9300-223

• Improvement of established techniques for the fabrication of optical sol-gel coatings

Basic principle of ADDC

• The substrate is drawn out of the coating solution under a well defined angle of inclination. Both surfaces are coated simultaneously resulting in different film thickness on front and back side

Advantages of ADDC:

• Improvement of interference filters
• Reduced number of layers or coating steps to obtain the desired optical properties
• Reduced production time and costs

Applications:

• Short and long-wave pass filters
• Narrow band pass filters
• Beam splitters of higher quality
• Antireflective coatings

• Transmission of a beamsplitter with improved quality and a reduced number of coating steps:

• The beamsplitter fabricated by conventional dip coating (DC) needs eight steps for production whereas that fabricated by angle-dependent dip coating (ADDC) and presenting better performance needs only four coating steps.