Difference between revisions of "Ring"
Jump to navigation
Jump to search
| Line 10: | Line 10: | ||
[[Image:Ch2_Fig16b.jpg|400px | [[Image:Ch2_Fig16b.jpg|test|400px]] | ||
{{IALAFooter}} | {{IALAFooter}} | ||
Revision as of 08:14, 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)
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
