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 600 ± 1 l/mm.

The diffraction efficiency (unpolarized @ cAD = 32°) is 230 nm ≥ 70 %, 400 nm ≥ 28 %, and 600 nm ≥ 15 %.

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