MicrobeHunter.com Microscopy Forum

Yeah maybe look for a macroscope. Those apozooms I hear are good but a little more than what you're looking to spend. Maybe a different one. This polish artist is not doing super close work from what I can tell. You can even see his ring light in the reflections of his sample in some! He says he dus...

Not exactly sure but B&L stuck with imperial units until the very end.

I've only adjusted the lenses in the sz7, where my advice there would be, "don't". Someone out there has a sz4 service manual pdf pretty sure. I only have the sz7 one.

https://www.covingtoninnovations.com/stereozoom/

Here's the adjustments you should make sure you have done before taking it apart and then instructions on taking.it apart.

It should be parfocal throughout the zoom. Does it stay in focus when zooming out?

I picked up a Schott KL1500 for cheap that I will try to convert to LED. I was planning to use a high CRI neutral white LED All LEDs on the market today feature a significant hole in the green range. This is the reason why color critical applications like pol-microscopes still have halogen illumina...

Sometimes this.problem can be helped by adjusting the eyepiece distance

I have not seen any 30 watt LEDs with particularly even spectra.

LouiseScot wrote: ↑

Fri Oct 28, 2022 3:08 pm

anyone ever looked inside an epi/vertical illuminator and seen the lenses?

Thanks

Louise

The microzoom has only a single collimating lens for.the illuminator. The coaxial illuminator for the sz7 has one lens per eye, in addition to the polarizers.

I think ideally you're going to want a mitutoyo finescope with maybe a 20x at most. Pricey though, but it's set up for photos and enough working distance for lighting and interaction

I'm not exactly sure how to interpret this four ray ray tracing diagram.

Thorlabs sells some nice aspheric lenses for pretty cheap for this kind of thing that I have had success with. They even have the option of grinding one side of you want diffusion

Very nice. H-e works so well but sometimes you wish the anatomists would branch out a little? Anyway, looks like a primo section.

It is a Nikon universal illuminator fitted with a quality single led at about 4 watts, adjustable with voltage dimming. I like the little Nikon lamps and have two of them, both fitted with LEDs. They are equipped with a field iris and have a large collector lens on a helicoid focuser.

I never thought I would collect so many objetives but I seem to have one for just about every need. It looks impressive but there is a lot of duplication. However, several of the objectives have longer working distances than others, which I find that useful when viewing pond water without using a c...

I'm familiar with the lens arrangement. It is certainly B&L's finest variable focus achromat condenser. The iris could easily be fixed, but as it works more or less just fine I will leave it as it is. I am now think how to adapt or manufacture a condenser holder for it. Quite a catch, a piece I have...

I was finally able to acquire a very nice Model R example for a song, and so I can post some pictures of its quality. https://i.imgur.com/Iw6OZd3.jpeg This is using a Nikon CF Plan Apo 10x on a full frame B&L Dynazoom with an Optem 50% reduction lens and a Pi HQ camera. The Dynazoom is outfitted wit...

Ah, I bought the B&L condenser. I am hoping it is the variable focus type as I would like it for an ancient Bausch stand of.mine. Anyway, I can say you certainly were easy to work with I have no idea how that condenser works, but I can confidently guess it is a "focus type". There are two dials, on...

I use phase. The old timers used picric acid to impart a yellow shade, but you probably don't want to do that.

I bet DIC works good.

This is an old thread but a scope with a mirror and that illuminator and that condenser is an excellent combination and should be able to provide even, bright light to the competent operator. Although small of field and without planar correction, several of those objectives should be able to produce...

Perfect! Exactly as I had hoped for. An oblique plate would be nifty, but I think for this one a.good old iris I'm fixing up will do

What would you like to look at?

Ah, I bought the B&L condenser. I am hoping it is the variable focus type as I would like it for an ancient Bausch stand of.mine. Anyway, I can say you certainly were easy to work with

Glycerin is often described as temporary mounts, but I have some nematodes that were put into 60-70 years ago that look quite good.

While temporary mounts are quite simple, making permanent ones is an art of nearly limitless depth. Moreover, each type of sample has different approaches and known solutions. I would recommend firstly checking out the posts here on the subject as well as the subforum devoted to books, of which ther...

Thank you! Excellent.

Neat! This is a completely different looking phase setup from the b&l/Leica Galen (plan)phase set I have. I wonder if they are at all compatible.

Oh, just the mirror on the photo adapter would be ideal. My sz7 works very well, especially with those 15x uwf aerial surveillance eyepieces like you have. It's only when looking through the photo port do I see some issues. Thanks very much! I'm glad your instrument is working for you. The sz7 to me...

I have heard of fisher being called the Walmart of science

You might be focusing on the top of the condenser or having some surface of your field light source projected. You did your proper Kohler exercise I assume?