04 Jun '09 19:15>1 edit
Found this link about a lens with a variable-focus that is achieved with no mechanical moving parts that relies on two liquids to refract the light and can very quickly adjust and maintain the focus of the lens using very little electric power.
http://www.physorg.com/news308.html
Although it technically has ‘no mechanical moving parts’ the liquids still have to move a bit for the lens to refocus.
I am curious to know if it is possible to make an electrically adjustable-focus lens that doesn’t only have ‘no mechanical moving parts’ but literally has ‘no moving parts’ by making the lens out of a transparent material that when exposed to a change in electric field/current it instantly changes its refractive index?
Does anyone know of such a material?
http://www.physorg.com/news308.html
Although it technically has ‘no mechanical moving parts’ the liquids still have to move a bit for the lens to refocus.
I am curious to know if it is possible to make an electrically adjustable-focus lens that doesn’t only have ‘no mechanical moving parts’ but literally has ‘no moving parts’ by making the lens out of a transparent material that when exposed to a change in electric field/current it instantly changes its refractive index?
Does anyone know of such a material?