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|