Advanced Mechanical and Optical Systems (AMOS) manufactures small optical pieces by diamond turning mainly for infrared applications but also, after post polishing, for visible or ultraviolet. Concave or convex mirrors up to 500mm can be machined with extreme asphericities. Off axis devices or freeform surfaces can also be generated.
Lately, AMOS has turned a large Fresnel lens up to more than 2m diameter, sector by sector.
Echelle gratings with many up to 100 per mm and precise blaze angle can be made until 300mm length.

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