Re: [Phys-l] lens combinations

["Bob Sciamanda" <treborsci@verizon.net>]

Hi Anthony,
I think you will find my free tracing program "Snell Trace" helpful.
Included in the tutorial lab manual are several examples, such as the Cooke 
triplet - the basis for many camera lenses.
For all the relevant (and free) software, go to my site:
http://mysite.verizon.net/res12merh/
-Bob Sciamanda
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From: "Anthony Lapinski" <Anthony_Lapinski@pds.org>
Sent: Tuesday, May 25, 2010 7:58 AM
To: <phys-l@carnot.physics.buffalo.edu>
Subject: [Phys-l] lens combinations

> For my optics unit I am planning to do some lens combination problems in
> my honors classes. Our textbook (Cutnell & Johnson) has typical, standard
> problems. I am looking for more practical ones (involving actual devices)
> for my students to try. For example, a telephoto lens basically consists
> of a positive and negative lens combination. Does anyone have such a lens,
> and can you tell me the focal lengths of the lenses, their approximate
> separation (or range of movement), and the distance from the negative lens
> to the film? I know there are other devices which uses lenses in
> combination (e.g., slide projector), but finding specifics about focal
> lengths and separations has been difficult.
>
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