Frequently Asked Questions

They are produced with grooves that are neither equispaced nor parallel, and are computer optimized to form near-perfect images of the entrance slit on the detector plane.

They are designed to focus a spectrum onto a plane surface, making them ideal for use with linear or 2-D array detectors.

Only one fixed optical element is required because these "Imaging Gratings" are nearly free from astigmatism.

The dispersion range varies depending on the reference number, but it can range from 4 to 36 nm/mm.

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