echelle Comparison Table

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physical object > artifact > device > instrument > optical device > wavefront modifier > spectrograph dispersing element > diffraction grating > echelle

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echelle comparison table

Subject is a kind of has definition

diffraction grating spectrograph dispersing element An optical device containing thousands of very fine parallel grooves which produce interference patterns in a way which separates out all the components of the light into a spectrum.

echelle diffraction grating A type of diffraction grating with groove angles of 90°. With the grating at an angle of 45° the grooves resemble a staircase.

Subject	is a kind of	has definition
diffraction grating	spectrograph dispersing element	An optical device containing thousands of very fine parallel grooves which produce interference patterns in a way which separates out all the components of the light into a spectrum.
echelle	diffraction grating	A type of diffraction grating with groove angles of 90°. With the grating at an angle of 45° the grooves resemble a staircase.

Next diffraction grating: grism Up: diffraction grating Previous diffraction grating: blazed grating