18 Inch Universal Element Holder Setup Guide
By Zygo | Published: 2026-10-27
Category: How-to Guides
Learn how to set up and use an 18 inch universal element holder for interferometry, including alignment tips and common mistakes to avoid.
Quick Answer
To set up an 18 inch universal element holder for interferometry, mount the holder on a stable surface, secure the optic, and align the holder to the interferometer's optical axis using the adjustment features.
Why the Mounting Plate Matters
The 18 inch universal element holder includes a solid mounting plate designed to hold test parts securely. A stable base prevents vibration and movement that can ruin interferometric measurements. Ensure the plate is level and firmly attached to your optical table before mounting any optic.
Trade-offs: Universal vs. Dedicated Holders
A universal element holder offers flexibility to accommodate various optic sizes and shapes, but it may require more careful alignment than a dedicated holder. For high-precision testing, you may need to fine-tune the position of the optic within the holder to achieve optimal results.
Setup Steps
- Mount the holder: Place the 18 inch universal element holder on a stable optical table. Use the mounting holes on the solid plate to bolt it down securely. Ensure the plate is level. A loose or uneven mount can introduce vibration and misalignment.
- Secure the optic: Place your test optic into the holder and tighten the securing elements evenly. Avoid over-tightening, which can distort the optic. Check that the optic is not pinched or stressed.
- Align to the interferometer: Adjust the holder's tilt and position so the optic's surface is perpendicular to the interferometer's beam. Use the adjustment features on the holder to fine-tune alignment. Verify alignment by observing the interferogram; fringes should be straight and evenly spaced.
Product Facts
- 18 Inch Universal Element Holder: Holds and secures optics for testing, with a solid mounting plate for mounting test parts. The solid mounting plate ensures stability and accurate positioning of your optic, which is critical for reliable interferometric measurements.
18 Inch Universal Element Holder
