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Interesting post from dusjagr over on Hacketeria, who reports success using a 100 mW green laser with the lens from a cheap webcam, in the arrangement pictured here, to make a projecting microscope that will accept conventional microscope slides, and is only slightly more complicated than a Planinsic-type water-drop projector. [via Hack a Day]


Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I write for MAKE, serve as Technical Editor for MAKE magazine, and develop original DIY content for Make: Projects.



  1. Yuri Numerov says:

    And doesn’t the laser burn or destroy the samples? 100mW sounds excessive…

  2. @Yuri
    not if the focal point of the beam is slightly before the sample. that way as the beam expands, it also, very efficeintly, (running off of around 2.00 volts instead of 125.) displays an image.

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