Variable focal position optical system and light beam scanning a

Variable focal position optical system and light beam scanning a

Variable focal position optical system and light beam scanning a

Variable focal position spatial modulation device

Variable focal-length lens assembly

Variable focal-length lens system

Variable focus adapter

Variable focus color corrected field lens

Variable focus device

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 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