In this video, we'll show you how to use a shear plate interferometer and interpret the measurements. We'll measure the focal length of a lens and show that it is well-corrected.
![Using a Shear Plate Interferometer](http://eikonaloptics.com/cdn/shop/articles/shearplate_fringes.png?v=1695844100&width=2544)
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In this video, we'll show you how to use a shear plate interferometer and interpret the measurements. We'll measure the focal length of a lens and show that it is well-corrected.