Design World

  • Home
  • Technologies
    • 3D CAD
    • Electronics • electrical
    • Fastening & Joining
    • Factory automation
    • Linear Motion
    • Motion Control
    • Test & Measurement
    • Sensors
    • Fluid power
  • Learn
    • Ebooks / Tech Tips
    • Engineering Week
    • Future of Design Engineering
    • MC² Motion Control Classrooms
    • Podcasts
    • Videos
    • Webinars
  • LEAP AWARDS
  • Leadership
    • 2022 Voting
    • 2021 Winners
  • Design Guide Library
  • Resources
    • 3D Cad Models
      • PARTsolutions
      • TraceParts
    • Digital Issues
      • Design World
      • EE World
    • Women in Engineering
  • Supplier Listings

New Flat Lens Capable of Focusing a Continuous Bandwidth of Colors

By Brooks Hays, United Press International | February 9, 2017

Share

Scientists have created a flat lens that can focus a continuous bandwidth of colors, from blue to green — the world’s first.

The lens’ creators, a group of scientists from Harvard University, are the same researchers who unveiled a flat lens made up of a super thin arrangement of nanopillars. But the breakthrough lens could focus just one color at a time.

The researchers went back into the lab and found a way to correct for chromatic dispersion. Different colors of light feature different wavelengths. They are bent at a variety of angles by a flat lens, so they focus at different distances — that’s chromatic dispersion.

“Traditional lenses for microscopes and cameras — including those in cell phones and laptops — require multiple curved lenses to correct chromatic aberrations, which adds weight, thickness and complexity,” Federico Capasso, a professor of applied physics at Harvard, said in a news release. “Our new breakthrough flat metalens has built-in chromatic aberrations corrections so that a single lens is required.”

Researchers altered the shape, width, distance, and height of the nanopillars, so all types of light, blue through green, would focus at the same distance.

By giving their flat lens more control over chromatic dispersion, scientists have broadened its applications in imaging, spectroscopy and sensing.

“By harnessing chromatic aspects, we can have even more control over the light,” said researcher Reza Khorasaninejad. “Here, we demonstrate achromatic flat lenses and also invent a new type of flat lens with reverse chromatic dispersion. We showed that one can break away from the constraints of conventional optics, offering new opportunities only bound by the designer’s imagination.”

The scientists described their optical breakthrough in the journal Nano Letters.


Filed Under: Rapid prototyping

 

Related Articles Read More >

PCB mills
Basics of printed circuit board milling machines
Rapid Product Solutions, Inc. enhances its rapid prototyping and production services
Protolabs Launches Production Capabilities for Metal 3D Printing
3D Printer Makes Peacekeeping Missions Cheaper and Repair of Defense Systems Faster

DESIGN GUIDE LIBRARY

“motion

Enews Sign Up

Motion Control Classroom

Design World Digital Edition

cover

Browse the most current issue of Design World and back issues in an easy to use high quality format. Clip, share and download with the leading design engineering magazine today.

EDABoard the Forum for Electronics

Top global problem solving EE forum covering Microcontrollers, DSP, Networking, Analog and Digital Design, RF, Power Electronics, PCB Routing and much more

EDABoard: Forum for electronics

Sponsored Content

  • Renishaw next-generation FORTiS™ enclosed linear encoders offer enhanced metrology and reliability for machine tools
  • WAGO’s smartDESIGNER Online Provides Seamless Progression for Projects
  • Epoxy Certified for UL 1203 Standard
  • The Importance of Industrial Cable Resistance to Chemicals and Oils
  • Optimize, streamline and increase production capacity with pallet-handling conveyor systems
  • Global supply needs drive increased manufacturing footprint development

Design World Podcasts

June 12, 2022
How to avoid over engineering a part
See More >
Engineering Exchange

The Engineering Exchange is a global educational networking community for engineers.

Connect, share, and learn today »

Design World
  • Advertising
  • About us
  • Contact
  • Manage your Design World Subscription
  • Subscribe
  • Design World Digital Network
  • Engineering White Papers
  • LEAP AWARDS

Copyright © 2022 WTWH Media LLC. All Rights Reserved. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media
Privacy Policy | Advertising | About Us

Search Design World

  • Home
  • Technologies
    • 3D CAD
    • Electronics • electrical
    • Fastening & Joining
    • Factory automation
    • Linear Motion
    • Motion Control
    • Test & Measurement
    • Sensors
    • Fluid power
  • Learn
    • Ebooks / Tech Tips
    • Engineering Week
    • Future of Design Engineering
    • MC² Motion Control Classrooms
    • Podcasts
    • Videos
    • Webinars
  • LEAP AWARDS
  • Leadership
    • 2022 Voting
    • 2021 Winners
  • Design Guide Library
  • Resources
    • 3D Cad Models
      • PARTsolutions
      • TraceParts
    • Digital Issues
      • Design World
      • EE World
    • Women in Engineering
  • Supplier Listings