Re: achromatic viewer & my Will

[P3D Dr. George A. Themelis <DrT-3d@xxxxxxxxxxxxxxxxxxxxxxxxxxx>]

Peter Abrahams writes:

>I have wondered why my Telebinocular has such thick lenses.  Examining the
>picture of the disassembled lenses at
>http://www.arlington.net/homes/dlewis/projects/achrom.htm
>shows that the doublet is .88" thick.  Can any reader inform me as to an
>optical basis for the use of such thick glass?  A color corrected doublet
>is not usually so thick.  

I think the answer is that this is cut in half out of one huge achromat
(mother of all achromats?).  But I'll let Alan Lewis fill in the details.

>As George says:    
>>And now I can die happy 
>    
>Are your viewers in your will?  I'd hate to think of the violence at the
>estate sale if it's a free for all.

I have instructed my wife and have put the following line in my will:

TO GET THE MOST MONEY, SEND ALL MY 3D STUFF TO DALIA TO AUCTION.

Hope that helps ;)

-- George Themelis


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