Sapphire Domes
Meller Optics’ tough high-precision sapphire domes can be provided with diameters of up to 100 mm and included viewing angles of up to 180 degrees. Manufactured on a highly repeatable 5-axis spherical machining center, they feature wall thickness variation of less than 25 microns and other dimensional tolerances of down to +/-10 microns.
Domes can also be manufactured from other materials upon request, including quartz, optical glass, silicon, zinc sulfide, germanium, Spinel and Alon.
| Diameter | 100mm maximum +/- .025mm |
| Thickness | Preferred 20:1 aspect ratio diameter to thickness <25 microns wall thickness variation within an overall thickness tolerance of +/- .05mm |
| Included Angle | 180 degrees maximum |
| Spherical Irregularity | <2 fringes per inch (measured at 632nm) |
| Surface Finish | 80-50 to 20-10 per MIL-PRF-13830 (dependent upon surface irregularity) |
| Centering Error | 0.012mm maximum |
| Edge Bevel | Per customer specification |
