Coating types:

1. Anti-reflection coatings

- single-layer:  R<1,5%, selectable central wavelenght

-multilayer:  R<0,25%, selectable central wavelenght

-broadband:  Ravg <0,4%, selectable central wavelenght

2. Aluminum coatings

3. Silver coatings

4. High-reflection dielectric coatings

5. Neutral density

- 1-85 % transmission

6. Dichroic filter

- cold-light mirrors