Beam Expansion

6" - 8" SYSTEM

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8" (203.2 mm) BEAM EXPANDER SYSTEM FOR USE ON 6" INTERFEROMETERS - PROVIDING EXTENDED MEASURING RANGE


  • the XONOX 6" - 8" Beam Expander has been designed to be fully compatible with commercially available 6" Fizeau interferometers



  • the Beam Expander and matching 8" Transmission Flat in λ/20 PVr quality are ideally suited for evaluating transmitted wavefront error or surface figure error of large aperture optics


  • additional diffractive holograms or null lenses might be used to test large aperture optics of various shapes


  • optional dedicated fixture to facilitate the usage of the Beam Expander and Transmission Flat in horizontal setups. The Fixture has been designed to support the weight of the assembly without restricting motion along the optical axis


  • fine adjustment system for perfect setting to the systems optical axis

Version for horizontal use

Version for vertical use

8" (203.2 mm) Transmission Flat

TECHNICAL DATA 6" - 8" System

Beam Expander 6" - 8"
INPUT BEAM DIAMETER 6" (152.4 mm)
INPUT MOUNTING ZYGO compatible 6" bayonet
OUTPUT BEAM DIAMETER 8" (203.2 mm)
OUTPUT MOUNTING XONOX 8" bayonet
OVERALL LENGTH 364.2 mm
MECHANICAL DIAMETER 241 mm
WEIGHT approx. 8 kg
8" Transmission Flat
APERTURE DIAMETER 8" (203.2 mm)
MOUNTING 8" XONOX bayonet
OUTPUT BEAM DIAMETER 8" (203.2 mm)
HOUSING DIAMETER 236 mm
OVERALL LENGTH 65 mm (adds 45 mm when installed)
REF. SURFACE QUALITY λ/20 PVr (@ 632.8 nm)
WEIGHT approx. 5 kg