Difference between revisions of "Fresnel Profile"

From International Dictionary of Marine Aids to Navigation
Jump to navigation Jump to search
Line 1: Line 1:
'''2-2-135
'''2-2-135


Line 12: Line 11:
[[Image:Ch2_Fig14.jpg|400px]]
[[Image:Ch2_Fig14.jpg|400px]]


[[Image:Ch2_Fig16.jpg|400px]]
[[Image:Ch2_Fig16a.jpg|400px]]
 
[[Image:Ch2_Fig16b.jpg|400px]]
 





Revision as of 08:57, 1 March 2009

2-2-135

Fresnel Profile (of a lens or fixed lens)

A stepped profile of both dioptric and catadioptric elements, the dioptric part of which presents one straight side towards the focus.

(Figs. 10, 14 and 16)

Ch2 Fig10.jpg

Ch2 Fig14.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)