EssentOptics offers a wide variety of transmission spheres and flats to broaden the capabilities of interferometers.

Transmission flats are available with clear apperturtes from 90 to 150 mm and designed to measure transmitted wavefront or surface quality of flat optics. Transmission spheres are developed to measure surface quality or transmitted wavefront of concave or convex surfaces and offered in wide variety of clear appertures.

The optics are compatible with Zygo-Bayonet and are available with λ/10, λ/20 and λ/50 surface quality, can be be arranged vertically or horizontally. Each product includes transportation case. Adaptors, mountings, and beam expanders are available upon request.

Typical characteristics are provided below.