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.

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

The groove density of the grating is 320 ± 1 l/mm.

The diffraction efficiency of the grating is 65% at 225 nm, 50% at 300 nm, and 18% at 500 nm.

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