Stan Halpin wrote: >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?
I remember reading on the PDML about 10 years ago about a patent for that kind of thing... by Pentax. -- Mark Roberts - Photography & Multimedia www.robertstech.com -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
