Valve device for a variable focus lens

Vapour-deposition material for the production of layers of...

Vapour-deposition material for the production of...

Variable aperture formed by linearly movable elements

Variable attenuation of free-space light beams

Variable attenuation optical fiber coupling

Variable attenuation type optical power attenuator with...

Variable density light transmitting device

Variable direction of view instrument with on-board actuators

Variable fiber count optical fiber cable core

Variable focal length lens

Variable focal length lens and lens array comprising...

Variable focal length projection lens for use on overhead...

Variable focal length reflector lens system

Variable focus lens and spectacles

Variable focus lens and spectacles

Variable focus lens and spectacles

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

Variable focus lens with simplified construction using a...

Variable focus liquid filled lens mechanism