10x Magnifiers for Stereo Viewer

[klein@xxxxxxxxxxxxxxxxx (Alexander Klein)]

Hi fellow 3D-folks,

I just came home from a photo-show. I couldn't resist to buy two focusing
10x magnifying lenses to build a stereo viewer.

The lens covers a Realist format slide (with slight vignetting at the
edges). It's also great for View-Master (larger magnification than the
V-M model D focussing viewer).

I dismantled the magnifying lens to find out how it's constructed:

   |    ____________       __
   |   (  )      (  )     (  |
   |  (    )    (    )   (   |
   |  (    )    (    )   (   |
   |   (__)______(__)     (__|
   |

Film    Triplet           Plano-convex
                          (PCX) lens

The lenses have a 23 mm diameter, and the Triplet's magnification is
approx. 1/3 less than that of the Realist Red Button viewer.

I just tried the triplet with a 6x6 slide - and it works just fine 
(with slight vignetting at the corners).

The lens comes with two transparent screw-on bases, one clear, one
matte. It also comes with a 36.4 mm diameter glass reticle with a
crosshair and a horizontal rule, extending 15mm from the center
(30 mm total). It's marked in 0.5mm increments. From 0 to 1 mm it's
marked in 0.1 mm increments, from 1 mm to 2 mm it's marked it 0.2 mm
invrements.

The overall quality it excellent. It looks similar to the Edmund 7x Wide
Field Comparator (# C37,696, on page 133 of Edmund's latest catalog
16N1).

I have asked the guy who sold them if he can supply more - and the
reply was "yes". So if anybody is interested, I can get them for
$60 each, plus postage. I can accept US-checks in US-$.

Drop me a line at klein@xxxxxxxxxxxxxxxxx if you're interested.

alex


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