Difference between revisions of "Ring"
Jump to navigation
Jump to search
m (1 revision) |
|||
| (4 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
'''2-2-025 | '''2-2-025 | ||
| Line 6: | Line 5: | ||
(Figs. 10 and 16) | (Figs. 10 and 16) | ||
[[Image:Ch2_Fig10.jpg|400px]] | [[Image:Ch2_Fig10.jpg|400px|border]] | ||
[[Image: | [[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)
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
