Wright eyepiece for Ortholux Pol

[Peterhenk]

Hello forum members,

I am Dutch and my written German is bad! Yet I speak and read German fluently. So please forgive me for using English on this fine forum.

Currently I am winding down my Ortholux collection and there are two particularly interesting items, the famous Heine vario-color and a Wright eyepiece / polariser combo. My question is about the latter. What is it exactly and who made it?

What do I know about this piece? It came with a Ortholux Pol used by a French research institute, it was mounted on a Leitz pol 8x hair cross eyepiece with a nook to assure alignment in the special pol photo tube that allows to use this eyepiece.

The polariser is to be mounted under a Heine or Berek condenser

[hugojun]

Hello Peterhenk / Henk ? ,

this setup could be the so called Senarmont Compensation kit and it is used to measure Relative Retardations in the range of 0-to 1λ.

More here:
https://www.mccrone.com/mm/senarmont-compensation-how-to-accurately-measuresmall-relative-retardations-0-1/

Happy Christmas
Jürgen

[Peterhenk]

Thank you Jürgen,

Learned something!

[hugojun]

mind you,

the rotating  analyzer could be part of the Condenser-Polarizer system as well,

since the diameter seem to be too small for the straight tube right hand in photo 5.


Jürgen

[Peterhenk]

This is what it looks like mounted

[hugojun]

Is it possible to rotate the cap analyzer independent to the slider photo 3 ?

Slider photo 3 should be stationary in the regards to the polarizer in the condenser-system.

If not , it is probably a condenser part.

Can you show photos of the 3 positions of the slider inserted in the “analyzer” taken through the “Analyser”?

Jürgen

[Peterhenk]

I doubt the analyser is a condenser part as it states 'tubusauszug 8mm'. The part in foto 4 is to be mounted underneath  a condenser