Patent ID: 8223924

Claim:
A grating with a large aspect ratio, comprising: a multiplicity of recurring alternating grating webs and grating gaps, each of the respective grating webs including a height; and a multiplicity of filler beams, respectively arranged in the grating gaps with a spacing from one another in a direction of the gaps, each of the respective filler beams connecting respectively adjacent grating webs over the respective height of the grating webs, wherein the grating webs and the grating gaps run from a first to a second side of the grating, and the filler beams each include a width in a direction of the gaps, the width being at most 10% of the spacing between two adjacent filler beams, and wherein the spacings between respective adjacent ones of the filler beams in each of the grating gaps do not vary by more than 10% in the entire grating.