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Title: Dome Sapphire Crystal
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Valid for: 1 year
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Date: 05-12-2015
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Dome Sapphire Crystal Sen Hishi domes are fabricated from sapphire, quartz, glass, silicon and germanium in sizes up to large diameter with included angles to 160 degrees and dimensional tolerances to +/-10 microns. Manufactured on a highly repeatable 5-axis spherical machining center, they exhibit less than 25 microns wall thickness variation. Featuring surface accuracy to less than 1 fringe measured at 633nm and finishes to 20-10 scratch-dig per MIL-PRF-13830, Meller optical domes are well suited for a wide variety of applications including high speed missile domes, viewports, and other front surface optics requirements. Domes are priced according to material, size, part, geometry and quantity. Specifications: Materials: Sapphire, Quartz, Glass, Silicon, Germanium Diameter: 100mm maximum +/- .025mm Included Angle: 160 degrees maximum Wall Thickness: Preferred 20:1 aspect ratio diameter to thickness. Less than 25 microns wall thickness variation within an overall thickness tolerance of +/- .05mm. Spherical Irregularity: Less than 2 fringes per inch, measured at 632 nanometers. Surface Finish:80-50 to 20-10 per MIL-PRF-13830 dependent upon surface irregularity. Centering Error:.012mm maximum Edge Bevel: Per customer specification