Variable focal length lens

Variable focal length lens

Variable focal lens

Variable focal-length lens assembly

Variable focus lens and optical device using the same as...

Variable focus lens by small changes of the equatorial lens diam

Variable focus lens by small changes of the equatorial lens diam

Variable focus lens by small changes of the equatorial lens...

Variable focus lens by small changes of the equatorial lens...

Variable focus lens device having temperature fluctuation...

Variable focus lenses

Variable focus liquid lens

Variable focus liquid lens with reduced driving voltage

Variable focus liquid-filled lens using polyphenyl ethers

Variable focus microlens

Variable focus optical apparatus

Variable focus optical devices

Variable focus optical devices

Variable focus optical devices

Variable fresnel type structures and process