My version of John`s halogen-led conversion!
Posted: Thu Sep 29, 2016 7:25 pm
Hi guys
Finally got all the bits and bobs I needed to have a go at converting my Leitz scope from Halogen to led illumination (you weren`t joking about the slow boat from China John
).
It has come about more of necessity than just a trial really as the mini supernova (ie halogen bulb) was warming up my desk a bit too much for comfort as unlike John`s its placed in a lamp housing at the back of the scope with the bulb literally millimeters from the wood desk top.
I wanted to do a minimum alteration of the scope just in case I needed to make it Halogen lit again. I was tempted to install the bulb under the diaphragm like John`s conversion but thought I`d try it in the existing housing first and it seems to work perfectly plus I really didn`t want to remove all the lens/mirror/prism assembly.
My new setup seems to work brilliantly and very pleased with it. If anything its a Tad less bright than the Halogen but hardly worth bothering with.
I did also notice using the x4 objective that a dark ring is noticable on the outside of the FOV regardless of how bright the dimmer unit is or how much the diaphragm or condenser is adjusted but no problem with any other objectives.
Big thanks to John (mrsonchus) for his excellent instructions.
regards
Steve
Ps apologies for the order of the images, I think I should have started with the last one first ??
Finally got all the bits and bobs I needed to have a go at converting my Leitz scope from Halogen to led illumination (you weren`t joking about the slow boat from China John
).It has come about more of necessity than just a trial really as the mini supernova (ie halogen bulb) was warming up my desk a bit too much for comfort as unlike John`s its placed in a lamp housing at the back of the scope with the bulb literally millimeters from the wood desk top.
I wanted to do a minimum alteration of the scope just in case I needed to make it Halogen lit again. I was tempted to install the bulb under the diaphragm like John`s conversion but thought I`d try it in the existing housing first and it seems to work perfectly plus I really didn`t want to remove all the lens/mirror/prism assembly.
My new setup seems to work brilliantly and very pleased with it. If anything its a Tad less bright than the Halogen but hardly worth bothering with.
I did also notice using the x4 objective that a dark ring is noticable on the outside of the FOV regardless of how bright the dimmer unit is or how much the diaphragm or condenser is adjusted but no problem with any other objectives.
Big thanks to John (mrsonchus) for his excellent instructions.
regards
Steve
Ps apologies for the order of the images, I think I should have started with the last one first ??
