Part of the fun working with inventors is that you see these things from time to time. :-)
The idea is old, but the problem with these lenses is to get a good optical surface, and some Norwegian scientists found that they could get that using thin microscope glass over a gel. The first time I saw it the prototype consisted of one gel, two microscope glass plates and two coins with a hole i the middle So you put pressure on the edges and the glass bends around the gel making i lens. They had mounted it on a camera and showed quite good images. Today they use piezoelectric elements to bend the plate. They (helped by me) filed a patent application, http://worldwide.espacenet.com/publicationDetails/originalDocument?CC=WO&NR=2008035984A2&KC=A2&FT=D&ND=3&date=20080327&DB=EPODOC&locale=en_EP I think you will find a mention of the older ideas, including the pump in the aplication. and the firm trying to sell it, especially for mobile phone cameras is here http://www.polight.no/ There will be some time before they make them large enough for glasses but for small cameras they are OK. What you actually get is a stationary zoom lens, as it focusses by changing the focal length. DagT Den 1. mai 2012 kl. 02:09 skrev Stan Halpin: > There was an item in the newspaper today - Dow Corning has been working with > an NGO on ways to reduce the many problems associated with poor vision and > lack of access to prescription corrective glasses. So they have been testing > a prototype of a "self-adjustable" lens. A person puts on the glasses, > manipulates what sounds like a form of pump to adjust the amount of an > "optical silicone fluid" in the lens to adjust the power of the lens. The > adjuster can then be detached and the user has what look like a normal pair > of glasses. > > My mind is boggled! > > I wonder if optical silicone fluid would be lighter than, for example, HD > glass in modern camera lenses? And how about a hydraulic adjustment to zoom > rather than via mechanical motors and gears? > > stan > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
