How tight a flatness spec can IRD Glass hold?
IRD Glass typically holds flatness within .000010″ on a day. in, day out basis. Depending on the substrate and the size, IRD Glass can comfortably hold flatness to 1/10 wave. Q: What angular tolerance can IRD Glass hold? A: Angle tolerances better than 1 to 3 arc minutes can be consistently reproduced by the technicians at IRD Glass. Q: Can IRD measure angles? A: IRD can provide NIST traceable certificates for angles accurate to within 5 arc seconds. Q: What types of glass finishing does IRD offer? A: At IRD Glass, you can request a rough ground finish, a lapped surface finish, a polished finish, or you can specify a specific Ra (roughness) value or even a range of surface roughness.. Q: Does IRD Glass do any fire polishing? A: Yes, we do provide the service of fire polishing. IRD currently fire-polishes the ends of a number of small diameter precision tubes to remove chips and scratches. Q: Does IRD Glass manufacture optical lenses? A: IRD Glass currently manufactures all flat and cyl
