Liquid Lens Can Magnify at the Flick of a Switch 108
An anonymous reader writes "German engineers have designed the first liquid camera lens with no moving parts that provides two levels of zoom. 'Liquid lenses bend light using the curved boundary between watery and oily liquids. When the two liquids are held in the right container, the boundary between them can be made to curve in a way that focuses light simply by applying a voltage. Liquid lenses have attracted much attention because they are potentially smaller than conventional optics and cheaper to build. Samsung has already built them into some cellphones.'"
This is old (Score:4, Informative)
Seeing double?? (Score:5, Informative)
Re:This is old (Score:5, Informative)
Samsung etc. have had liquid lenses, but they haven't been able to do zoom. The German researchers found out how to make it work.
Hope that helps.
Re:Herbert used it in Dune in 1965... (Score:3, Informative)
Re:Hubble (Score:1, Informative)
Re:with a technology like this... (Score:4, Informative)
Re:Hey, wait a second... (Score:1, Informative)
it's the first liquid lens system that is capable of variable levels of magnification with no moving parts.
then the summary mentions some crap about liquid lenses in general.
and then it mentions how samsung is already using liquid lenses in their cell phones.
no, it doesn't suggest that they use liquid lens systems with variable magnification and no moving parts.
Re:Herbert used it in Dune in 1965... (Score:4, Informative)
Re:Herbert used it in Dune in 1965... (Score:3, Informative)
The way you've worded your post is pretty much a flat contradiction of all optics since Newton. Go look up what a lens is.
I didn't say the shape of a lens doesn't matter. I said it doesn't alter the refractivity (and by that I mean its index of refraction). Of COURSE it alters the behavior of the lens. Refractivity is an intensive property, the geometry of the lens is an extensive property.
Perhaps my wording wasn't as clear as it should have been. The point stands that the shape of a lens does not alter the ability of the material to refract light, it only alters the specific geometries of the refracted rays.
Re:with a technology like this... (Score:2, Informative)
This has been used for bifocal soft lenses for presbyopia. Focus splitting with diffraction gratings is more commonly used now.
Re:Lens isn't working (Score:2, Informative)
http://www.adaptive-eyecare.com/ [adaptive-eyecare.com] comes to mind (link from an article in Illustrerad Vetenskap http://www.illvet.se/Crosslink.jsp?a=1218&id=7354