Wanted: Leitz HM-LUX TL illuminator unit

[Galf]

Hi,

Recently I laid my hands on a specimen of the most basic version of the Leitz HM-LUX microscope with the intention to use it as backup-scope for the main one which is currently setup for phase contrast. Currently the upgrade is in progress: XY-stage mounted, the amazingly simple illumination unit is replaced by a standard exchangeable condenser-holder wit a bathtub condenser with filter holder, a 5-round objective revolver and with the LED from my upgraded SM-POL, things start to look really bright with the NPl-objectives from the other scope! Perhaps a binocular head in the future but for now I can use the one from the other scope.

I must say it is rather enjoyable to modify this sweet little microscope myself...

However, I would like to modify a TL illuminator (the AC lamp house mounted on the base) with LED and diaphragm but these units are quite hard to source for a price less than the microscope itself. Mine lacked one because of the basic illumination/condenser unit.
I hope anyone has one for spare or otherwise I can trade it for the simple stage-mounted 6V-5W lamp/condenser unit.

IMG_20200816_155849_1.jpg (142.68 KiB) Viewed 2072 times

[Galf]

This was the old lamp / 'condenser', directly attached to the stage. By turning you can move it up- and downward a bit to adjust brightness and contrast.
Trafo needed for the BA9S-bulb.

IMG_20200726_133621_1.jpg (49.79 KiB) Viewed 2068 times

[PeteM]

I've adapted LED headlamps for this sort of application. Ones with a bright single die. Seem to be a thousand choices - aim for something that will approximate the same illumination. Worst case, if it doesn't fit, you know have a headlamp for camping, power outages, work in dark spaces etc.

[Galf]

Sort of tried that, bought a selection of bulbs fitting in the original setup but to limited results. It is quite difficult to get the ideal position of the LED and output was also disappointing. Besides, this setup is really limited in performance because it is not a real condenser but a kind of frosted window.

This is what I'm looking for and whith some tweaking should be useful enough (pic from inet):

HM-LUX-lamp.jpg (49.76 KiB) Viewed 2051 times