The Clinton Herald, Clinton, Iowa

Community News Network

May 2, 2013

New camera inspired by insect eyes

An insect's compound eye is an engineering marvel: high resolution, wide field of view, and incredible sensitivity to motion, all in a compact package. Now, a new digital camera provides the best-ever imitation of a bug's vision, using new optical materials and techniques. This technology could someday give patrolling surveillance drones the same exquisite vision as a dragonfly on the hunt.

Human eyes and conventional cameras work about the same way. Light enters a single curved lens and resolves into an image on a retina or photosensitive chip. But a bug's eyes are covered with many individual lenses, each connected to light-detecting cells and an optic nerve. These units, called ommatidia, are essentially self-contained minieyes. Ants have a few hundred. Praying mantises have tens of thousands. The semicircular eyes sometimes take up most of an insect's head.

While biologists continue to study compound eyes, materials scientists such as John Rogers try to mimic elements of their design. Many previous attempts to make compound eyes focused light from multiple lenses onto a flat chip, such as the charge-coupled device chips in digital cameras. While flat silicon chips have worked well for digital photography, in biology, "you never see that design," Rogers says. He thinks that a curved system of detectors better imitates biological eyes. In 2008, his lab created a camera designed like a mammal eye, with a concave electronic "retina" at the back. The curved surface enabled a wider field of view without the distortion typical of a wide-angle camera lens. Rogers then turned his attention to the compound eye.

Over the last 3 years, Rogers and students in his lab at the University of Illinois, Urbana-Champaign, have developed an array of 180 ommatidia (about the same number as in the eye of a fire ant), each of which contains a lens, tiny silicon photodetectors, and circuitry to read the image. But nanoscale manufacturing on a flexible, curved surface is tricky, says electrical engineer R. Fabian Pease of Stanford University in Palo Alto, California, who was not involved in the research. "It's not even easy on a nice, flat, rigid silicon wafer."

Text Only
Community News Network
  • 072214 Diamond Llama 1.jpg Llama on the loose corralled in Missouri town

    A llama on the lam cruised Main Street Tuesday before it mistook a resident’s fenced backyard for a place to grab a meal and freshen up.

    July 22, 2014 2 Photos

  • When your doctor commits suicide, things get complicated

    When they call for appointments, patients are told they can't see their doctor. Ever. The standard line: "We are sorry, but your doctor died suddenly."

    July 15, 2014

  • NWS-HB0713-HowardMartin-004.jpg Airman laid to rest back home in Indiana six decades after death

    The mystery of what happened to a military transport plane that disappeared in the fall of 1952 into an Alaskan glacier was solved two years ago when a helicopter crew spotted the wreckage. But it took another two years to retrieve the remains of Airman Howard Miller and 16 other servicemen passengers. Saturday, Miller was laid to rest in his hometown of Elwood, Ind., with full military honors. Hundreds turned out for the funeral and burial services.

    July 13, 2014 2 Photos

  • This is what happened when I drove my Mercedes to pick up food stamps

     I climbed the ladder quickly, free to work any hours in any location for any pay. I moved from market to market, always achieving a better title, a better salary. Succeeding.

    July 8, 2014

  • Nation's first soda tax could come to Berkeley

    The Berkeley City Council unanimously decided last week to put the 1-cent-per-ounce tax on the ballot this November. Approving the tax would mean a major defeat for the soda industry, which has spent millions to crush the effort nationwide.

    July 7, 2014

  • President Barack Obama mug Best president? Worst president? Don't read too much into those polls

    The questions about who are the best and worst post-WWII presidents are useless. What they mainly show is that Republicans are far more unified around a single story than are Democrats.

    July 2, 2014 1 Photo

  • What states can do on their own about immigration

    It's official: Congress won't take up immigration reform this year. This week, President Barack Obama said he'll use executive actions to change policies unilaterally.

    July 1, 2014

  • The Internet has changed how we curse

    Relatively recent technologies — cable television, satellite radio, and social media — provide us with a not-too-unrealistic picture of how often people swear in public and what they say when they do.

    June 24, 2014

  • May 2014 was the hottest may in recorded history

    According to new data released this week, May 2014 is officially the warmest May in recorded history.
    Both NASA and the Japan Meteorological Agency have tentatively ranked May at the top of historical measurements, though NASA's numbers are preliminary because crucial information is still missing from China.

    June 18, 2014

  • facebook.png Facebook making big changes to its advertisements

    Facebook is making significant changes to the advertisements on its network, and said Thursday that it will give users more control over which ads they see on its network.

    June 12, 2014 1 Photo

Front page
Clinton Herald Photos


Browse, buy and submit pictures with our photo site.

Poll

What are your plans for the weekend?

Enjoying the outdoors
Staying in out of the heat
Traveling
Other
     View Results
AP Video
Olympics 2014
Featured Comment
Featured Ads
Blue Zones Project
Parade
Magazine

Click HERE to read all your Parade favorites including Hollywood Wire, Celebrity interviews and photo galleries, Food recipes and cooking tips, Games and lots more.