The Edmond Sun

Features

May 3, 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
Features
  • Authorities update Simpson’s saga

    Investigators are attempting to locate the owner of a dog named Simpson to determine whether or not his injuries were due to an accident or man-made, an official said.
    On July 1, the Logan County Sheriff’s Office investigated reports of an injured dog near the intersection of Western and Simpson in south Logan County, Lt. Tom Kutay said. Officers responded and took several statements of a dog being found with injures to its back, Kutay said.

    July 22, 2014

  • Whataburger celebrates children’s superhero spirit with ‘Super-Duper’ event

    It’s a bird! It’s a plane! It’s a Super Duper Celebration! In the heart of every child lives a superhero and on Thursday Whataburger restaurants will celebrate the superhero spirit in all of us with an evening of family fun from 5-7 p.m. at its location at 421 S. Broadway.
    Customers can spend quality time with their little heroes and treat them to a superhero-themed celebration of food, activities and giveaways. Children 12 and under dressed in a superhero costume will receive a free kid’s meal. There will be a Whataburger photo booth and Whataburger’s mascot, Whataguy, will also be present to join the fun.

    July 22, 2014

  • Shopping smarter for family necessities can help the environment

    There’s a growing trend among consumers to make choices reflecting the goals and values that matter to them most.  In fact, two out of five people say they’re more inspired to try a natural product that does something good for themselves, their family and the planet, according to a recent study conducted by Toluna for natural products brand Tom’s of Maine.

    July 21, 2014

  • Back to school lunch Build a better bag

    Brown bag lunches and back to school go hand in hand. As you’re gearing up for the start of a new school year, it’s the perfect time to stock the pantry with healthy sack lunch options and after school snacks, too.

    July 21, 2014 1 Photo

  • Pets

    This is a list of animals that have been found and are at the Edmond Animal Shelter, at Interstate 35 and Covell in the Cross Timbers Municipal Complex. Call the shelter at 216-7615 for more information.

    July 21, 2014

  • Kids Cook Simple ways canned foods get children cooking

    When it comes to teaching children about healthy eating habits, there’s no better classroom than the kitchen.

    July 21, 2014 1 Photo

  • Garden Vegetable Spring Rolls The Canebrake offers summer recipe for Garden Vegetable Spring Rolls

    The Canebrake, a destination hotel and spa in Wagoner, is offering the following recipe from its restaurant for Garden Vegetable Spring Rolls with Avocado Wasabi Puree.

    July 21, 2014 1 Photo

  • Malaysians wonder 'Why us?' after second loss of airline jet

    It was all too familiar. Grieving families rushing to airport. The flashing television graphics of a plane's last radar appearance. The uncomfortable officials before a heavy thicket of microphones.
    For many Malaysians, the disappearance of Flight 370 in March has been a long trauma from which the nation has not yet recovered.

    July 21, 2014

  • Quilt Edmond Quilt Guild celebrates 10th anniversary with event

    Quilting has evolved over the years and now, more than ever it is looked at as an art form.
    Edmond’s Quilt Guild is sponsoring its fourth quilt show and festival celebrating its 10th anniversary at the same time this week and inviting area residents to come and check out some of the newest types of quilting.

    July 19, 2014 1 Photo

  • Ryan by horse statue.jpg Good Samaritan who lost his leg ‘Keeps Moving Forward’

    He is an uncommon hero, this Good Samaritan who saved another man’s life and in doing so lost his left leg. Now his friends and family are reaching out to help him.
    While assisting a stranded motorist on Nov. 9, 2011, Edmond resident and Santa Fe High School graduate Tyler Ryan was hit and pinned against the back bumper of a car by an inattentive motorist on 15th Street in front of Crest Supermarket.

    July 18, 2014 1 Photo