AmScope A40X 40X (Spring) Achromatic Microscope Objective

We recently acquired an old Olympus BH-2 scope for our lab that came with a couple dud objectives. We grabbed a couple of these AmScope objectives just so we can get it up and running in the short term. This 100x lens works just fine with it. Threaded right in without issue, doesn't interfere with the turning the nosepiece, and produces a decent image. Now, it is very distinctly a Cheap lens. The field flatness isn't great, you can focus roughly 2/3rds of the field at a time. It's also not Exactly parfocal with the other lenses, so it requires a bit of twiddling of the knob to clear up. But for the price it will absolutely do what we need it to do for now, and we're happy as can be. And lastly a note on shipping. It was sent in a plastic tube, with the lens screwed into a retaining ring in the cap. Nice idea. Unfortunately the tube wasn't closed correctly so the lens was at an angle in the tube, potentially a risk for damage in shipping (we didn't have any, but its possible). The tube was also just shipped in a bubble mailer, and had been roughed up a bit, so had some cracks in the plastic. But it was still intact, so all's well that ends well I suppose.

Worked as expected on current microscope replacing lowest power lens.

Product is shipped as shown. It has a standard thread and fits perfectly into my Celestron Microscope. I am a novice with microscopes and apparently the objective lenses are generally the same length to make focussing easier as you switch up to higher magnifications. This objective is much longer than the ones fitted as standard on the Celestron microscope so you need to practice getting focus without being anywhere near the correct focal distance. I also did not have any objective oil handy so I used Olive Oil instead. None the less once the correct focus had been obtained I was really impressed with the image quality, and relieved that this 'expensive' lens worked on my Celestron! I expect that when I use the correct oil I will be more impressed. I managed to take a good photo of a human sperm (AmScope prepared slide) which measures about 2.5um across. There was no visible distortion across the field of view. I recommend this product, it is quite heavy and good quality.

Great lens for the price. Pretty sharp for the price. I replaced the oil base lens with it. The oil base lens is useless to me due to eye floaters

I'm using this with my Nikon polarizing microscope to give me a wider field of view for a preliminary scan of rock thin sections. Rather than buying a Nikon objective for >>$300, I was hoping that this $49 objective would serve, because it didn't really need to be perfectly distortion free for my purpose. Well, as it turns out, I really don't see any distortion, chromatic or otherwise and it does give me about double the field of view of my 4x objective. As a bonus, it also happens to focus pretty close to focus of my three Nikon objectives. I'm totally happy with it and for $49 it can't be beat.

Exactly as described. It works.

Llegó en perfectas condiciones y en el tiempo estimado

This won't fit into our optical mount as it i way larger than it needs to be.

This is what I need for my microscope if you don’t want to not use the oil lens.

100x has excellent imaging quality for malarial parasites and bacteria visualization. Fits well to ordinary microscope. Authentic Olympus product

Cette lentille s'adapte parfaite sur mon microscope. Bonne netteté et clarté.

Este objetivo lo compré para usarlo con el microscopio de Velab Ve-M4, es totalmente compatible. Solo un detalle, el botecito que lo contiene venía demasiado apretado