Claremore Daily Progress

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

  • 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

  • New York to offer free lunch to all middle-school students

    New York's $75 billion spending plan for the fiscal year that began last week includes the first step toward offering free lunch for all 1.1 million students, expanding a program now reserved only for the city's poorest children.

    July 9, 2014

  • Screen Shot 2014-07-09 at 11.24.10 AM.png VIDEO: Pilot buys pizzas for storm-delayed travelers

    A Frontier Airlines pilot went above and beyond the call of duty when a recent flight from Washington, D.C. to Denver was diverted to Cheyenne, Wyoming due to bad weather.

    July 9, 2014 1 Photo

  • Why North Korean cheerleaders may soon descend on the South

    When you think of North Korea, "cheerleaders" may not be the first thing that springs to mind. The Hermit Kingdom is perhaps better known for less savory things like gulag-like labor camps and leadership purges.

    July 8, 2014

  • Screen Shot 2014-07-08 at 11.46.13 AM.png VIDEO: Foiled beach gear theft goes viral

    Video capturing a bizarre confrontation with two women allegedly attempting to steal beach gear on a Florida beach has gone viral.

    July 8, 2014 1 Photo

  • Screen Shot 2014-07-08 at 10.40.20 AM.png VIDEO: Sleeping fan suing Yankees, ESPN for $10M

    A fan caught on camera sleeping during a recent game at Yankee Stadium has filed suit against the Yankees and ESPN, claiming he suffered emotional distress when two announcers mocked him on the air.

    July 8, 2014 1 Photo

  • VIDEO: A boom in firework sales

    This year could be quite the boom for fireworks sales across the U.S. According to the American Pyrotechnics Association, or the APA, sales are already off to a good start.

    July 4, 2014

  • Happy birthday, America. Now legalize fireworks.

    Through the smoke of Roman candles and bottle rockets, the absurdity of Americans' obsession with do-it-yourself explosives is nonetheless clear: One day each year, we gather with neighbors, friends and loved ones to blow stuff up in our backyards. Go, U.S.A.!

    July 4, 2014

  • Cattle at record signals higher beef costs for July 4th grillers

    Cattle futures extended a rally to a record as Americans are gearing up to pay the most ever for beef served at barbecues over the Fourth of July holiday weekend.

    July 3, 2014