Zygo

4" F/1.5 Ultra Sphere - 1/40 Wave

4" F/1.5 Ultra Sphere - 1/40 Wave - Main image
4" F/1.5 Ultra Sphere - 1/40 Wave - View 2
$27.81 $41.5 In stock

Category: Accessories

The ZYGO 4" F/1.5 Ultra Sphere is a transmission sphere specified at 1/40 wave (15.8 nm) PVr. It is listed under accessories with the brand ZYGO and SKU code 6024-0430-15.

  • Product name: 4" F/1.5 Ultra Sphere - 1/40 Wave
  • Specification: 1/40 wave (15.8 nm) PVr
  • Type: F/1.5 transmission sphere
  • Brand: ZYGO
  • SKU: 6024-0430-15
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Customer Reviews (4.8 / 5 · 5 reviews)

Emma R. ★★★★★

Took delivery of the 4" F/1.5 sphere for our optical shop and the 1/40 wave spec is no joke—the fringes are dead straight across the full aperture. Took a bit of fiddling to get the mount aligned, but once it's set, it's rock solid. That 15.8 nm PVr figure is honestly conservative.

Kevin ★★★★★

Swapped this 4" F/1.5 sphere into our interferometer setup and the fringe quality is noticeably cleaner than our old one. The 1/40 wave surface figure holds up across the full clear aperture. Arrived well packed, no scratches on the coating.

Lucy Y. ★★★★★

The 1/40 wave spec is real—we're seeing fringe straightness that matches the certificate, no surprises. It's a pricey accessory, but for F/1.5 testing at this aperture, the surface quality holds up under repeated setups.

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