Dr. Steve Lee, with some of his easy-bake lenses
The prototype dermascope on a Nexus 4 smartphone
The dermascope consists of two LEDs (angled at 20 degrees), a watch battery and a droplet lens
One of the droplet lenses
Comparison of a human tissue sample between the 1-cent PDMS lens (left) and a $300 microscope lens (right)
Microscope lenses are typically made either by grinding and polishing glass discs, or pouring polymers into molds – both techniques can be quite involved, which is reflected in the price of the finished product. Now, however, a scientist from Australian National University has devised a new lens-making process, in which drops of silicone are simply baked in an oven. The resulting lenses can be used for a variety of applications, yet are worth less than one cent each.
Other Images from this Gallery