Artificial eye developed to help correct blurry images

Prior metalenses were about the size of a single piece of glitter. They focus light and eliminate spherical aberrations through a dense pattern of nanostructures, each smaller than a wavelength of light.

PTI
New York, Publish Date: Feb 25 2018 12:15AM | Updated Date: Feb 25 2018 12:15AM
Artificial eye developed to help correct blurry images

Inspired by the human eye, scientists have developed an adaptive metalens that is essentially a flat, electronically controlled artificial eye.

The adaptive metalens simultaneously controls for three of the major contributors to blurry images: focus, astigmatism, and image shift.

The study, published in the journal Science Advances, demonstrates the feasibility of embedded optical zoom and autofocus for a wide range of applications including cell phone cameras, eyeglasses and virtual and augmented reality hardware.

"This research combines breakthroughs in artificial muscle technology with metalens technology to create a tunable metalens that can change its focus in real time, just like the human eye," said Alan She from Harvard John A Paulson School of Engineering and Applied Sciences (SEAS) in the US.

To build the artificial eye, the researchers first needed to scale-up the metalens.

Prior metalenses were about the size of a single piece of glitter. They focus light and eliminate spherical aberrations through a dense pattern of nanostructures, each smaller than a wavelength of light.

"Because the nanostructures are so small, the density of information in each lens is incredibly high," said She.

To solve this problem, the researchers developed a new algorithm to shrink the file size to make the metalens compatible with the technology currently used to fabricate integrated circuits.

The scientists demonstrated the design and fabrication of metalenses up to centimeters or more in diameter.

"This research provides the possibility of unifying two industries: semiconductor manufacturing and lens-making, whereby the same technology used to make computer chips will be used to make metasurface-based optical components, such as lenses," said Capasso.

The researchers also demonstrated that the lens can simultaneously focus, control aberrations caused by astigmatisms, as well as perform image shift.

Together, the lens and muscle are only 30 microns thick. PTI

Latest News

  1. Two Chinese nationals arrested in Bihar for liquor consumption
  2. Two Chinese nationals arrested in Bihar for liquor consumption
  1. German media sound alarm after shock World Cup defeat
  2. German media sound alarm after shock World Cup defeat
  1. Seven killed as SUV rams into stationary truck in Punjab
  2. Seven killed as SUV rams into stationary truck in Punjab
  1. As ceasefire ends, forces launch search operation in south Kashmir
  2. As ceasefire ends, forces launch search operation in south Kashmir
  1. 22 injured in shooting at US art festival
  2. 22 injured in shooting at US art festival
  1. Mansbal blast: Police doesn’t rule out use of explosive material
  2. Mansbal blast: Police doesn’t rule out use of explosive material
  1. Ceasefire ‘drama’ was made to achieve covert targets: Lashkar-e-Toiba
  2. Ceasefire ‘drama’ was made to achieve covert targets: Lashkar-e-Toiba
  1. Youth shot dead by unknown gunmen in Kulgam in south Kashmir
  2. Youth shot dead by unknown gunmen in Kulgam in south Kashmir
  1. Four civilians injured in mysterious blast at Manasbal park
  2. Four civilians injured in mysterious blast at Manasbal park
  1. No let up in oppression even on Eid day: Yasin Malik
  2. No let up in oppression even on Eid day: Yasin Malik
  1. Policeman injured in Kak Sarai attack continues to be critical
  2. Policeman injured in Kak Sarai attack continues to be critical
  1. Man returns from Dubai to celebrate Eid with family in Rajouri, found dead
  2. Man returns from Dubai to celebrate Eid with family in Rajouri, found dead
  1. 17 dead in Venezuela club stampede
  2. 17 dead in Venezuela club stampede
  1. GoI decides not to extend ceasefire in Kashmir
  2. GoI decides not to extend ceasefire in Kashmir
  1. Youth critically injured in last evening Soura clashes
  2. Youth critically injured in last evening Soura clashes
  1. US pips India as top greenfield FDI investment destination: Report
  2. US pips India as top greenfield FDI investment destination: Report
  1. Egypt raises fuel prices by up to 66.6% to push reforms
  2. Egypt raises fuel prices by up to 66.6% to push reforms
  1. JRL condemns killing of two youth in south Kashmir in past 24 hours
  2. JRL condemns killing of two youth in south Kashmir in past 24 hours
  1. Eid-ul-Fitr celebrated with religious fervour, gaiety across Jammu
  2. Eid-ul-Fitr celebrated with religious fervour, gaiety across Jammu
  1. Devender Rana exchanges greetings at Eidgahs, meets people
  2. Devender Rana exchanges greetings at Eidgahs, meets people
  1. Eid-ul-Fitr celebrated with religious fervor across Ramban
  2. Eid-ul-Fitr celebrated with religious fervor across Ramban
  1. Governor views arrangements for Mela Kheer Bhawani
  2. Governor views arrangements for Mela Kheer Bhawani
  1. Member Parliament Karan Singh meets Jammu and Kashmir Governor
  2. Member Parliament Karan Singh meets Jammu and Kashmir Governor
  1. Mushtaq ul Hassan, Abdul Aziz Lone of Tangmarg bereaved
  2. Mushtaq ul Hassan, Abdul Aziz Lone of Tangmarg bereaved
  1. Two persons shot at in Shopian, hospitalised
  2. Two persons shot at in Shopian, hospitalised
  1. Three women killed, five minors injured in Kishtwar landslide
  2. Three women killed, five minors injured in Kishtwar landslide
  1. CM Mehbooba visits Kreeri, offers condolences to Shujaat Bukhari’s family
  2. CM Mehbooba visits Kreeri, offers condolences to Shujaat Bukhari’s family
  1. Eid celebrated with religious fervor in Kashmir
  2. Eid celebrated with religious fervor in Kashmir
  1. Man killed, four injured after vehicle hired by locals for sightseeing turns turtle in Lolab
  2. Man killed, four injured after vehicle hired by locals for sightseeing turns turtle in Lolab
  1. Mehbooba Mufti offers Eid prayers at Sonwar, prays for peace
  2. Mehbooba Mufti offers Eid prayers at Sonwar, prays for peace
  1. Soldier killed in cross-LoC sniper fire in Rajouri
  2. Soldier killed in cross-LoC sniper fire in Rajouri
  1. Trooper injured after militants attack CRPF party in Srinagar
  2. Trooper injured after militants attack CRPF party in Srinagar
  1. Police refute news reports, claim Anantnag youth died in grenade explosion
  2. Police refute news reports, claim Anantnag youth died in grenade explosion
  1. Nine youth with pellet injuries to eyes brought to SMHS hospital from Anantnag
  2. Nine youth with pellet injuries to eyes brought to SMHS hospital from Anantnag
  1. SSA teachers call off protest after meeting CM Mehbooba Mufti
  2. SSA teachers call off protest after meeting CM Mehbooba Mufti
  1. Seven youth injured in Shopian clashes
  2. Seven youth injured in Shopian clashes
  1. Youth killed, 10 cops among 22 injured in Anantnag clashes
  2. Youth killed, 10 cops among 22 injured in Anantnag clashes
  1. Geelani barred from offering Eid prayers: Spokesman
  2. Geelani barred from offering Eid prayers: Spokesman
  1. SSA teachers stage sit-in at Pratap Park on Eid day to press for demands
  2. SSA teachers stage sit-in at Pratap Park on Eid day to press for demands
x
This site uses cookies to deliver our services and to show you relevant news and ads. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service.That's Fine