Afocal Galilean attachment lens with high pupil magnification
Apochromatic lens system
Athermalized focal length extender for a zoom lens having a spli
Attachment lens for short distance shots
Attachment lens having diffraction surface
Attachment lens system
Attachment lens system
Attachment lens system for close-up photography
Auxiliary imaging lens and imaging apparatus using the same
Bifocus lens system and a portable machine using the same
Camera system and an optical adapter to reduce image format size
Camera-attachment lens system
Close-up attachment lens
Compound zoom lens
Corrective lens for rifle scope
Dual lens optical system and digital camera module including...
Dual lens optical system and dual lens camera having the same
Extender optical system
Focal length changeable lens
Focal length changeable lens system