Low roughness surface is done by our large, ultra-precision grinding machine. It allows us to provide a polishing process with high precision at a competitive price. Parallelism of the cylindrical axis per side is assured by "Cylinder check" TRIOPTICS - OptiCentric. Surface accuracy of large cylinder > 160mm is assured by cylindrical stitching interferometer.
Triplet, doublet and round shape are also available.
Size: 1 - 450mm square
General specifications: Concave: 1.4 - 10,000mm, Convex: 0.3 - 10,000mm
Lens size : Achievable accuracy
50mm or less : PVr ≦ λ/2
50mm - 100mm : PVr ≦ λ
100mm - 150mm : PVr ≦ 2λ
150mm or more : TBD