Frequently Asked Questions

Concave diffraction gratings are diffractive optics components for compact spectrometers.

By combining dispersive and imaging properties in a single element, concave gratings reduce stray light, increase light intensity, and are ideal for imaging the spectrum on a diode array or a CCD/CMOS sensor.

Concave gratings are used in spectrographs and spectrometers for scientific and industrial applications.

The groove density of the grating is 1600 ± 2 l/mm.

The diffraction efficiency (unpolarized @ cAD = 32°) is 230 nm ≥ 65 % and 500 nm ≥ 18 %.

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