No High Mag Lens in Deluxe Kit? Would Love to Buy One!


I just received my Foldscope Deluxe Kit a few days ago and I have not put it down! I assembled the Foldscope according to the instructions and it works great. I believe the two lenses that came with the kit are the 140x magnification lenses, which leads me to wonder where I can find a foldscope-compatible High mag lens? I must admit, I did think one would come included in the kit, but I am more than willing to purchase one separately because I am all about contributing towards the cause of putting a microscope in the hands of those who really need it, for cheap! I’ve been playing around with building other leeuwenhoek microscopes out of CD lenses and I will probably try making a lens using the butane torch and glass rod technique, just for fun. I am giddy with excitement for when I can view microorganisms with a handheld microscope!

The image is a fragment of roasted seaweed snack. (very tasty)


6 Comments Add yours

  1. I also miss the high mag lens…

  2. Hazuka says:

    I just got the deluxe kit with 2 lenses and I just imaged the 0.5mm grid using each and can report that they are exactly the same. I get ~2mm field of view with each and can’t resolve bacteria.

  3. REC says:

    With a butane torch and a glass stirring rod, one can create a smaller lens, albeit with much practice. I eventually produced a lens adequate enough to yield a higher magnification than the provided lenses. The resulting lens is about as small as the tip of a ballpoint pen… Which presents the biggest problem: Seating the lens in a reliable holder. I have had the most success with sandwiching the lens between two pieces of black electrical tape and shaving a small opening to look through. The lens can then be taped to a phone camera (preferably the front facing camera) for viewing. I haven’t figured out how to mount the lens on the foldscope without destroying it yet, though…

  4. gglez says:

    Very upset that I didn’t get the high magnification lens. That’s the reason I bought it . They should tell you that since on the website said that comes with both. Now I don’t know what to do. No response from foldscope team:(

    1. Manu Prakash says:

      Dear Gglez,

      The deluxe kit only comes with 140x mag lens. It has two; one a spare lens for later use. The detailed description is at with all the components. The deluxe kit has many accessory tools including light module for dark field and angular illumination, chamber slides to long term capture of microorganisms in a small chamber, several cell filtration meshes (5,25, 100 microns) for separation of materials out in the field. The current description clearly states the lens magnification. We apologize if this was a confusion. If you have an unused kit (with the foldscope sheet – please send a picture to and cc; we will look into a return if you are not happy with the product.

      Thanks again for engaging and supporting access to microscopy broadly.

  5. Manu Prakash says:

    Dear Rec,

    We are working on a new group of lenses; both higher and lower mag. But they won’t be available this summer. The first phase of Foldscope deployment did include a 450x lens.


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