Variable focus optical system

Variable geometry optical fiber connection

Variable immersion vignetting display

Variable lead optical tracing machine

Variable lead pattern tracer

Variable light attenuator

Variable magnification lens system

Variable magnification lens system

Variable magnification projection system

Variable optic attenuator for coupling optic fibers

Variable optical attenuator

Variable optical attenuator

Variable optical attenuator comprising hollow core waveguide

Variable optical attenuator or the like

Variable optical fiber delay line

Variable optical filter

Variable optical source

Variable pitch structured optical film

Variable polarization independent optical power splitter

Variable power optical system