Difference between revisions of "Ring"

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'''2-2-025
'''2-2-025


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(Figs. 10 and 16)
(Figs. 10 and 16)


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


[[Image:Ch2_Fig16.jpg|400px]]
[[Image:Ch2_Fig16a.jpg|400px|border]]


[[Image:Ch2_Fig16b.jpg|400px|border]]


{{IALAFooter}}
{{IALAFooter}}

Latest revision as of 10:01, 1 March 2009

2-2-025

A transparent optical element, usually of glass or plastic, in the form of an annulus or annular segment, having a prismatic section in sense 2 of 2-2-020. There are both dioptric (2-2-060) and catadioptric (2-2-070) rings, usually forming part of an optical panel or a drum lens.

(Figs. 10 and 16)

Ch2 Fig10.jpg

Ch2 Fig16a.jpg

Ch2 Fig16b.jpg




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