Ko ngā karāhe F-Theta e whakamahia whānuitia ana me ngā whakaata matawai galvanometer i roto i ngā pūnaha whakairo, tapahi, me te tohu laser. Ko te tikanga, ka iti iho i te 1% te whakapōturitanga F-Theta o te karāhe kia taea ai te whakaputa i tētahi wāhi tika i roto i te papa papatahi o te papa whakaahua.
Te Manawanuitanga o te Diameter: +0/-0.13mm
Te Manawanui Matotoru: ±0.25mm
Te Manawanui ki te Roa Arotahi: ±2%
Te Rerekētanga o te Matotoru o te Tapa (ETV): ≤3 pewa min.
Pūwero Mārama: >90%
Surface Flatness: λ/4 per 1″ Dia@632.8nm
Kounga Mata: 40-20 SD
Paninga AR: R<0.2% mō ia mata @10.6μ