Compact Measurement System for 300-mm Optics

 

Wed, 04/09/2014 - 3:19pm

 

Material Handling Systems

 

4D Technology has introduced a suite of products for high quality, low cost measurement of 300-mm diameter optics. The new measurement system for large optics combines the performance, flexibility and value of 4D Technology’s standard systems.

The system was designed around a standard, 100-mm aperture AccuFiz interferometer to take advantage of its high wavefront quality and reliability. A series of precision components were developed which enable measurement of large afocal optics and large diameter curved surfaces (using CGH null optics), as well as the entire range of optics that can be measured with the standard AccuFiz in stand-alone mode.

The suite of 300-mm components includes a compact, high performance 100- to 300-mm Beam Expander which can be used in horizontal or look-down measurement configurations. Kinematic mounting makes it possible to quickly remove the AccuFiz for free-standing operation, then to return it to the beam expander with no need for re-alignment. A visible coarse alignment laser is also available to quickly position the reference and test optics for rapid test setup.

The new 300-mm Rotational Mounts provide highly repeatable tip, tilt and rotation control of the test and reference optics. Precise adjustments enable 3-Flat Testing when extremely high accuracy measurement is required. The External Phase Shifting Mount adds the ability to measure in remote cavity setups.

All components were optimized for the AccuFiz but can also be adapted for use with other manufacturers' 100-mm aperture interferometers.

4D Technology Corp.