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Lightglass Optics is where you can find the largest selection of Newport, Line Tool Company, OptoSigma, Thorlabs and other manufacturers of fine optomechanical equipment. By selling pre-owned equipment, Lightglass Optics can fill your Optical Research equipment needs at a substantial discount- saving those precious budget dollars. In addition, we have more Alignment Telescopes on our shelves than anybody else..anywhere!- currently over 100 - made by Keuffel and Esser (K&E), Brunson, Cubic Precision, Davidson Optronics, Engis, Taylor-Hobson and others. We also have supporting Optical Tooling to go with them. Just click on any line item to go to the page for that item.
Davidson Optronics D-639 Trihedral Prism
Davidson Optronics D-639 Trihedral Prism

Davidson Optronics D-639 Trihedral Prism

Your Price: $2,150.00
In Stock
Part Number:238
This Davidson Optronics D-639 Trihedral Prism is a very accurate version of the retroreflective prisms like those that surveyors use. Just by its nature, a Trihedral Prism reflects exactly 180 degrees back any light or beam shined into it. This means that no adjustment is needed to set the D-639 normal to an autocollimator. Both internal and infinity focus can be quickly checked. In near mint condition and in its factory mahogany case. The one I have has the Dove Grey finish,some paint chipping, and a pencil-lead sized burn near the apex of the prism... and I will discount that one by 40% if that meets your needs....
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