Difference between revisions of "Ring"
Jump to navigation
Jump to search
m (1 revision) |
|
(No difference)
| |
Revision as of 00:00, 25 February 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)
[[Category:2.2 Optical Apparatus]