Zygo®...and other.....Transmission Spheres (TS)
Always inquire about your TS need. I often have parts in test and/or repair. I might have something for you...
New Transmission Sphere, 4-inch, F/1.5 Reference surface radius 142.7 mm. Lambda/20 - 0.047 waves, $10,950 In stock
Zygo® F/1.5, 4-inch, Lambda/20 @ 0.047 waves. This is a 1st generation Zygo TS. The design back then produced a center "bullseye" fringe pattern. The sphere still tests at Lambda/20, but with so many people using super high res cameras, it can be an issue for some apps. Call to discuss. $5,950
Zygo® F/1.5, 4-inch, Series2 - S/N 010042 - Lambda/10 at 0.101 waves This lens has a small "hot spot" in the center. Very small and not affecting the overall data, but could be an issue on a high-res interferometer.
CVI Transmission Sphere, F/3.4, 4-inch, S/N 010111-10 - Lambda/20 - 0.045 waves $5,500
CVI Transmission Sphere, F/7.6, 4-inch, S/N 010109-11 - Lambda/20 - 0.048 waves $5,500