Skip to main content

This $5 contact lens turns your smartphone’s camera into a microscope

Ever wanted to play around with a powerful microscope, but don’t have want to spend the thousands needed to buy one? A team of researchers at the University of Houston have come up with an amazing lens that converts the camera on your smartphone into a microscope capable of 15x magnification, or to one-tenth the width of a human hair. Amazingly, each one costs just $5, works like a contact lens, and can be reused over and over again.

What’s more, this isn’t science fiction, and it’s not only something used by boffins in the university’s lab. It’s called the Dotlens, and it’s on Kickstarter right now. The lens is made from something called polydimethylsiloxane (or PDMS for short), and is flexible like a contact lens. It sticks on to the camera lens like one too, and can be removed and reused without losing any adhesive qualities.

Recommended Videos

Created by Wei-Chuan Shih, an assistant professor at the university, its discovery happened quite by accident. While working with PDMS, he noticed it cured when heated up, and out of curiosity, he tried making a lens. He stuck the result to his Lumia 520, compared its 120x magnification ability to a professional grade Olympus microscope, and found little difference between the two. The main difference comes in the price — the Olympus scope could cost up to $10,000, while his lens contained materials costing just one cent.

Initially produced by hand, the lenses will eventually be made by a special inkjet printer, which is where the Kickstarter campaign comes in. For $10, backers will get two 15x magnification lenses, which don’t need any special equipment to fit to a phone, and can be used on just about any device out there, without causing any damage.

Targeting schools, where the expense and fragility of a pro microscope puts one beyond reach, the Dotlens will be equally welcomed by keen smartphone photographers, where it can potentially open up a whole new world of opportunity. At the time of writing, the campaign has amassed $2,000 of its £3,000 goal, and still has 28 days to run. If you miss out on the early bird offer, the lenses will cost $20, and delivery should take place in June.

Andy Boxall
Andy is a Senior Writer at Digital Trends, where he concentrates on mobile technology, a subject he has written about for…
You Asked: Big OLED vs. Huge Mini-LED? Your WWDC 2025 Questions Answered!
You Asked Ep. 95: Big OLED vs. Huge Mini-LED?

On today’s episode of You Asked: Should you pick the LG G4 or Sony Bravia 9 for a bright room? What were some of the biggest takeaways from Apple’s jam-packed WWDC event? And one more fun debate: go with an 83-inch OLED or a 98-inch Mini LED TV?

Sony Bravia 9 vs. LG G4: Best for bright rooms?

Read more
Samsung reveals upcoming Galaxy Watch 8 features as it looks to improve your health
Here are four new features coming to the next Galaxy Watch
A person wearing the 40mm Samsung Galaxy Watch 7 using apps.

If you've been looking forward to the follow-up of the Galaxy Watch 7 then good news, as Samsung has revealed some of the new features coming to its next generation smartwatch.

Expected to be called the Samsung Galaxy Watch 8, the South Korean firm has published a post on its site detailing new features for "the upcoming Galaxy Watch".

Read more
Forget Pro Max iPhones and Ultra Samsungs, the best phone I’ve used in years is the humble Pixel 9
Person holding the Google Pixel 9.

A few weeks ago, I returned to my Google Pixel 9 to test Gemini’s next-gen AI features. It was hard letting go of the OnePlus 13,  arguably one of the most rewarding phones out there. Plus, given the “Pixel history,” I had prepared myself for a bumpy ride, just like the Pixel 8, and the Pixel 7 before it. 

To my surprise, the Pixel 9 fared a lot better. It feels snappier on Android 16, takes sharp pictures, and lasts all day easily. The only thing pulling it down? The sporadic bad apps and updates. It's not enough to consider a replacement, but it's certainly frustrating in bits and pieces. 

Read more