Difference between revisions of "Prismatic Lens"

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An assembly consisting of a bullseye together with concentric dioptric and (sometimes) catadioptric rings, the foci of which are coincident with, or lie within the boundaries of, the source, when correctly focused (in sense 2 of 2-2-155).
An assembly consisting of a bullseye together with concentric dioptric and (sometimes) catadioptric rings, the foci of which are coincident with, or lie within the boundaries of, the source, when correctly focused (in sense 2 of 2-2-155).


[[Image:Ch2_Fig10.jpg|400px|border]]
[[Image:Ch2_Fig10.jpg|400px]]





Revision as of 12:00, 25 February 2009

2-2-085

An assembly consisting of a bullseye together with concentric dioptric and (sometimes) catadioptric rings, the foci of which are coincident with, or lie within the boundaries of, the source, when correctly focused (in sense 2 of 2-2-155).

Ch2 Fig10.jpg




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