slitmask
nounEtymology From slit + mask.
1
A device that is attached to an optical device in order to remove all light except for that from a particular direction.
noun
Etymology From slit + mask.
A device that is attached to an optical device in order to remove all light except for that from a particular direction.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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