Variable power optical system and imaging device

Variable power optical system for copying machine

Variable power optical system, image pickup lens device, and...

Variable power optical system, imaging apparatus, and...

Variable power optical system, imaging lens system and...

Variable power projection lens

Variable-focal-length lens system and imaging apparatus

Variable-focus lens system

Variable-magnification image-forming optical system

Variable-magnification optical system and image taking...

Variable-optical-property element

Variable-power optical system and imaging apparatus

Variable-power optical system and imaging device

Variable-power optical system, image pickup device, and...

Variable-power optical system, image pickup device, and...

Variable-power optical system, projection optical system,...

Variable-power type observational optical system and a variable-

Varifocal lens

Varifocal lens assembly

Varifocal lens barrel and a lens drive mechanism