Standard Concave Gratings (Low Stray Light and High Efficiency)
for Constant Deviation Monochromators
A concave grating has the advantage of setting up a spectroscopic system without the need for imaging optics like concave mirrors. For this reason, concave gratings are used in a wide range of applications.
Spectroscopes incorporating concave gratings are classified into two categories: polychromators and monochromators.
Toroidal Gratings (Higher light collection efficiency)
Toroidal gratings are more astigmatic than conventional aberration-corrected concave gratings.
It has a higher light collection efficiency than a concave grating, making it suitable for applications that require faint light detection.
