Cut screen

From International Dictionary of Marine Aids to Navigation
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No English Term

An opaque screen located at the optic and intended to reduce the luminous intensity of the beam, and also, in the case of revolving optics, to reduce the angle of uncertainty

Note: In the second case, this is a form of "cut screen".

Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

Number of cells

International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM