Nikon D7100 Canon EOS Rebel T5i Nikon D3300 Canon EOS 1200D Sony A5000 Nikon D4S
Nikon D7100 Canon EOS Rebel T5i Nikon D3300 Canon EOS 1200D Sony A5000 Nikon D4S
LetsGoDigital for Sale
  News Headlines Apple Canon Casio Fujifilm HTC LG Nikon Nokia Olympus Panasonic Pentax Ricoh Rollei Samsung Sony  
Lets Go Digital
 
     
Powered by True
Counted by OneStat.com
Revolutionary lens 5x thinner than sheet of paper
Mark Peters : May 24th 2005 - 21:50 CET
Digital Camera Review Test Appareil Photo Numerique Prueba camara digital Digitale Camera Test Dijital Kamera Incelemeleri Digitalkamera Test Digitalkamera
NewsRevolutionary lens 5x thinner than a sheet of paper : Scientists from Université Laval’s Faculty of Sciences and Engineering have invented a lens five times thinner than a sheet of paper that is able to zoom in and out without mechanical parts. Tigran Galstian and Vladimir Presnyakov present this amazing piece of optical instrumentation in the latest issue of the Journal of Applied Physics. "There are several possible applications for such a lens. We believe one of its most promising developments could be in camera-embedded cell phones," says Galstian. "Our opto-electrical zoom lens would be of much higher quality than the ones that currently equip these phones."
Revolutionary lens 5x thinner than sheet of paperZoom lens in camera phones
The digital zooms now used in camera phones only enlarge part of a picture without enhancing its quality, giving sometimes disappointing results. Other than its size, the greatest advantage of the lens invented by the two Université Laval researchers is that it allows for the movement of the focal point - as with a real camera - thus increasing the clarity, detail, and overall quality of an enlarged picture. Such a technology could help boost a market that seems to be losing its snap.

How is the opto-electrical zoom lens made?
According to a recent market study by one of the major camera makers, a significant number of camera phone owners find their devices less than satisfying, mentioning among other problems the poor picture quality. The new lens is made by adding a small quantity of photosensitive material to a liquid crystal cell. When the material is exposed to laser light, it forms a network of stable polymers varying in density according to the intensity of exposure. "The network is like a spiderweb, with its center denser than its periphery," explains Galstian. "When we apply a weak electrical current to it, the crystals in the center realign differently from those in the periphery and thus take on the shape and behavior of a lens."

Focal point from 60 centimeters to infinity
The curve of the lens - its focal point - can be modified by changing the intensity and frequency of the electrical current. The researchers have thus been able to modify the lens' focal distance from 1.6 to 8 meters in a few milliseconds by increasing the voltage from 1.5 to 4.5 volts. "The reaction is very fast and doesn’t involve any mobile parts or mechanical movements." The focal point of the lens can go from 60 centimeters to infinity.

In theory, the lens sounds like the best thing to have
Fred Greenslade, a sports and wildlife photographer in Portage la Prairie, Man., is intrigued by the invention: "I'll believe it when I see it but it sounds great. I guess I'd have a few questions. Is it going to work? How fast will it be? What's the quality going to be? "But it sounds, in theory, like the best thing to have."

   Sigma 120-300mm f2.8 EX DG HSM lens
   Sigma 300mm F2.8 APO EX DG HSM lens
   Sigma 50-500mm F4-6.3 EX DG HSM lens
   Next  Samsung Digimax i5 | Digimax #1 digital camera
   Previous  Fujifilm FinePix F10 review
   News by brand:News
   News by category:Lens
   News by brand and category:News Lens
   Canon EOS 700D - $749.00
   Nikon D7100 - $1146.95
   Panasonic Lumix DMC TZ40 - $339.00
   Sony CyberShot DSC HX300 - $398.00
   Canon IXUS 255 HS - $176.80
   Panasonic Lumix DMC TZ35 - $169.00
   Canon PowerShot SX280 HS - $199.00
   Canon EOS 1100D - $326.49
   Sony CyberShot DSC HX50V - $348.00
   Canon PowerShot SX510 HS - $229.00


LetsGoDigital digital camera magazine
Latest News announcements
New Smartphone messaging app
3D camera sunglasses
New Year’s Eve live cameras
Lady Gaga concert tickets
Phubby the wrist smartphone holder
Cheap Android tablets
Nuvola 4K Ultra HD player
Panono Panoramic Ball Camera
4K Ultra HD media players
iPhone 5c photo lens
Portable printers for Apple and Android
Charge your smartphone or tablet with portable power
Lamborghini Antares Android smartphone
Black Friday and Cyber Monday Deals Awards
McAfee Security for Android Systems
 
Twitter LetsGoDigital
Latest news headlines
Sony Xperia Z2
Sony Xperia Z2 tablet
Nikon 1 J4
Nikon Coolpix S810c
Samsung Galaxy Ace Style Android phone
Panasonic Lumix GH4
Nokia X smartphones
Nokia Asha 230
Nokia 220
Nikon 1 V3 test photos
Canon PowerShot G1 X Mark II
HTC Desire 310
Canon PowerShot SX600 HS
Canon IXUS 265 HS
Nikon Coolpix P600
   
CanonCasioFujifilmNikonOlympusHTCSamsungSonyPanasonicNokia
  Accessories Android Apps Camcorders Digital cameras Mobile phones Smartphones Software Tablets   CES CeBIT Gadgets IFA Photokina PMA