Re: can somone identify the type of fresnel lens I have?

From: Dave Bell <dbell@xxxxxxxxxxxxxxxxxxxx>
Date: Wed, 29 Aug 2007 21:54:08 -0700

Jason Abernathy wrote:

Just acquired a 41x31 inch fresnel lens made by DNP. The number on the lens is 491P043A90. What type of lens is this specifically (linear fresnel, etc)?

Thanks, in advance, for your help.

Jason

I hope you didn't pay more than $39.95 for it...
http://www.goldmine-elec-products.com/prodinfo.asp?number=G16400

Definitely not linear; that would be the fresnel equivalent of a cylindrical lens. This is roughly equivalent to a convex spherical lens.

Dave
.

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