lens \"lenz\ n [L lent-, lens lentil; so called fr. the shape of a convex lens] 1 : a curved piece of glass or plastic used singly
or combined in an optical instrument for forming an image; also : a device for focusing radiation other than light 2 : a transparent
body in the eye that focuses light rays on receptors at the back of the eye

© 1995 Zane Publishing, Inc. The Merriam-Webster Dictionary © 1994 by Merriam-Webster, Incorporated

I hope this helps.

CN
"Capt. Mooron" wrote in message news:8xIWd.17139$fc4.15873@edtnps89...
Wrong you both are... deep submersibles use a 10" "lens" as a view port

Sunglasses have lenses and yet do not alter the vision.

The pair of you should try learning as an option to spouting.

CM

"Capt. Neal®" wrote in message ...


Right you are yet again, Joe. Thanks for backing me up
with your usual common sense and knowledge of boating
related issues.

I tried to tell that ignorant putz, JR, the same thing but he
is too smug and self-absorbed to listen to the facts.

CN

"Joe" wrote in message oups.com...
the manufacturers and dealers call them lens.


They do that so they can charge suckers more.

It is not a lens. A lens is a transparent optical device used to
converge or diverge transmitted light and to form images.

Hope this helps

Joe