I made a simple microscope by myself with materials that are easy to find on hand.
First find a used optical drive or a used DVD, and remove its laser assembly.
Then remove the lens in the laser head assembly.
Find a small plastic box for medicine, drill a 6mm round hole in the middle of the round cover of the medicine box, and stick the lens on the round hole. Make sure that the flat side of the lens is facing up.
Next, stick a layer of translucent paper, such as sulfuric acid paper, on the mouth of the pill box.
Place the small object to be observed in the middle of the translucent paper, and then use a small piece of scotch tape to stick the small object firmly to prevent it from moving. I put a small piece of human hair on it.
Find a flashlight and put it on the side of this homemade microscope.
Turn on the flashlight and block the direct light with another object.
Close the lens with your eyes, turn the lid, adjust the distance between the lens and the object being observed, so that the image of the object observed by the eye is the clearest. The picture below is the effect picture I took with the camera. In fact, the effect of human eyes observation is clearer than the picture taken by the camera.
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