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Disc substrat D180, thickness 3mm for optical mask engraving, P3 polish quality, parallelism better than 0,01mm
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Disc substrat D180, thickness 3mm for optical mask engraving, P3 polish quality, parallelism better than 0,01mm
![[:en]Aspherical plano convex lens with reflective surface[:fr]Lentille plan convexe avec surface miroir asphérique[:de]Aspherical plano convex lens with reflective surface[:es]Aspherical plano convex lens with reflective surface[:]](https://sinoptix.fr/wp-content/uploads/2018/05/P1190360-241x179.jpg "[:en]Plano convex aspherical lense[:fr]Lentille asphérique plan convexe[:de]Plano convex aspherical lense[:es]Plano convex aspherical lense[:]")
