Auto focus glasses: 20-20 vision for everyone and no more bifocals - Ford Mustang Forums : Corral.net Mustang Forum
Go Back   Ford Mustang Forums : Corral.net Mustang Forum > General Non-Tech Forums > Lounge

Corral.net is the premier Ford Mustang Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 08-11-2010, 09:17 AM   #1
Registered User
 
Gary L's Avatar

Trader Feedback: (0)
 
Join Date: Apr 2000
Location: Chaska, MN, USA
Posts: 6,051

Auto focus glasses: 20-20 vision for everyone and no more bifocals

Kind of ugly, but I'm betting the designer models will hit the streets inside of 10 years.

http://uanews.org/node/12187


Quote:
Optical scientists have developed eyeglass lenses that switch focus in a blink of an eye.

Optical scientists at The University of Arizona have developed new switchable, flat, liquid crystal diffractive lenses that can adaptively change their focusing power.

That's great news for those old enough to wear bifocals.

And it's great news for anyone with imperfect vision, for it opens the way for next-generation "smart" eyeglasses -- glasses with built-in automatic focus.

In the foreseeable future, for example, you won't change prescription eyeglasses -- your eye doctor will just tweak a new prescription into the specs you already own.

You could even program your glasses for better than 20-20 vision.

"Right now, in our prototype, you switch the lenses on or off to change focus," said Nasser Peyghambarian, chair of photonics and lasers in UA's College of Optical Sciences and professor of optical sciences, materials science and engineering. "But ultimately this will act just like your automatic camera: Eyeglass lenses will know where to focus just like your auto-focusing camera does."

Peyghambarian is part of the team that began developing the focus-changing lenses in 2001 under an agreement between the university and private industry. The UA licensed three patents from the work to the Johnson and Johnson Development Corp., which sponsored the research. A firm called Pixel Optics has since purchased the patent licenses from Johnson and Johnson to commercialize the innovative technology.

Ten UA scientists and two colleagues now at the Georgia Institute of Technology are publishing their first science paper about the switchable-focus lenses this week in an article online at the Proceedings of the National Academy of Sciences website, http://www.pnas.org/current/shtml.

The novel lenses focus electroactively, said Guoqiang Li, UA optical sciences assistant research professor and lead author on the scientific paper.

They are basically two pieces of flat glass spaced five microns apart. Five microns is an incredibly small space -- roughly one-twentieth the diameter of a human hair. The space is filled with liquid crystal -- the same kind of stuff in your laptop's liquid crystal display.

The flat glass is coated with an even thinner layer (one-tenth micron) of indium tin oxide, or ITO, which is a transparent electrode. Unlike electrodes made of aluminum or gold, ITO transmits most of the light that hits it.

The transparent electrodes are patterned in a circular array over the area of the lens. The circular pattern is created through photolithography, an extremely precise technique that processes with light and chemicals.

Applying less than two volts to the circuit changes the orientation of the liquid crystal molecules, and that changes the optical path length through the lens. It takes only about 1.8 volts to change the index of refraction so that light refocuses, Peyghambarian and Li explained. The result is a flat piece of glass that acts like a lens.

The scientists first tested the imaging properties of the lens on a model human eye, then built prototype eyeglasses that real humans tested. The clinical results agreed with the model eye test.

Their tests showed that distance vision was no way impaired when the glasses were switched off and enabled close-up vision when switched on.

"We have demonstrated switchable liquid crystal diffractive lenses with high diffraction efficiency, high optical quality, rapid response time, and diffraction limited performance," they reported in the PNAS article. "These flat lenses are highly promising to replace conventional area division refractive, multi-focal spectacle lenses used by presbyopes," they wrote.

Estimates are that 93 percent of the world's population over age 45 have the condition called "presbyopia," where an aging person's eye lens loses flexibility and therefore, its ability to shift focus from distant to near objects.

Presbyopes will be some of the first to benefit from the UA research.

Electroactively focusing eyeglasses will revolutionize the $50 billion worldwide vision care industry, backers said at the outset of the UA research project.

Their major step in creating state-of-the-art liquid crystal diffractive lenses will have applications beyond vision care, the scientists predict. Tools with switchable lens elements would be valuable in dentistry, for example.

"It's great to see our new concept materialize and be validated after all these years of continuous efforts," said Bernard Kippelen. Kippelen, who helped start the project when he was at the UA, is now a professor of electrical and computer engineering at Georgia Tech.

"People don't often recognize that university scientists make prototypes," Peyghambarin said. "People think of us as just generating science papers. But when we actually make something like this, in house, people begin to realize we have real expertise that's applicable to everyday problems."

In addition to Li and Peyghambarian, UA optical scientists who collaborated in the research are David L. Mathine, Pouria Valley, Pekka Ayras, M. S. Giridhar, Gregory Williby, James Schwiegerling (who also is on the faculty in UA's department of ophthalmology and vision sciences), Gerald R. Meredith, and Seppo Honkanen. Bernard Kippelen and Joshua N. Haddock of the Georgia Institute Technology also collaborated.
__________________
Isaiah 26:10 Though grace is shown to the wicked, they do not learn righteousness; even in a land of uprightness they go on doing evil and regard not the majesty of the Lord.
Gary L is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 08-11-2010, 04:33 PM   #2
Registered User
 
rannalf's Avatar

Trader Feedback: (8)
 
Join Date: Mar 2006
Location: Knoxville, TN
Posts: 2,166

That's awesome. I hope they come to market sooner rather than later.
__________________
Quote:
Originally Posted by speedfreak87 View Post
I don't just have retard strength because I'm a retard.
Quote:
Originally Posted by Brian View Post
My butthole is one thing, my car...is another.
rannalf is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote Quick reply to this message
Old 08-11-2010, 04:36 PM   #3
Commander of the Bland Army
 
CalSpecMustang's Avatar

Trader Feedback: (0)
 
Join Date: Aug 2004
Location: Holding fast in No Mans Land
Posts: 12,200

Prototypes are always ugly but usually come out looking a lot better at the end of it all. That is unless the topic is about auto manufacturers.
__________________
Quote:
Originally Posted by exoskeleton View Post
On a side note, I loaned my ex-wife $500 last month, and the bitch actually paid me back , so 2012 might be the end.
CalSpecMustang is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote Quick reply to this message
Old 08-11-2010, 04:46 PM   #4
Registered User

Trader Feedback: (0)
 
Join Date: Sep 2002
Location: All over.
Posts: 333

hmmm...
Little Beast is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote Quick reply to this message
Old 08-11-2010, 06:25 PM   #5
Captain Chaos
 
Chauncy's Avatar

Trader Feedback: (1)
 
Join Date: Jan 2006
Location: Onalaska, Texas
Posts: 9,952

Wtb, I'm about to have to go back to the optometrist. I don't care if it looks like I'm wearing 80's headgear, I'm tired of not being able to see.
__________________
Canary - Yellow 1995 GTS - Adam - Gamertag: Naldaen
Quote:
"It's hard to be religious when certain people are never incinerated by bolts of lightning."
— Calvin
Chauncy is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote Quick reply to this message
Old 08-11-2010, 10:53 PM   #6
Registered User
 
Ray III's Avatar

Trader Feedback: (2)
 
Join Date: Jan 2003
Location: Troy, NY
Posts: 14,129

They already have lens implants that eliminate your need to wear bifocals. It's a new thing right now, but by the time electronic glasses get to market they will already be obsolete.
__________________
this post property of RAYMOND
Ray III is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote Quick reply to this message
Old 08-12-2010, 10:01 AM   #7
Commander of the Bland Army
 
CalSpecMustang's Avatar

Trader Feedback: (0)
 
Join Date: Aug 2004
Location: Holding fast in No Mans Land
Posts: 12,200

Quote:
Originally Posted by Chauncy View Post
Wtb, I'm about to have to go back to the optometrist. I don't care if it looks like I'm wearing 80's headgear, I'm tired of not being able to see.
Get lasik, best decision of my life. EvAr.
__________________
Quote:
Originally Posted by exoskeleton View Post
On a side note, I loaned my ex-wife $500 last month, and the bitch actually paid me back , so 2012 might be the end.
CalSpecMustang is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Mustang Forums : Corral.net Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 01:16 AM.



Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.5.2
© 2010-2011 Corral.net

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.