Display optical system

Disposable endoscope

Disposable endoscope employing positive and negative gradient in

Distance holder for lens system

Divergence and marking device for a target marker

DLC film and method for forming the same

Document camera having zoom-indication function

Document imaging system

Door viewer

Double axial gradient lens and process for fabrication thereof

Double mirror catadioptric objective lens system with three...

Double refraction and total reflection solid nonimaging lens

Double-sided telecentric measurement objective

Double-wavelength aperture restricting filter and optical...

Doublet lens, variable apex angle prism and deviation correction

Doubly telecentric lens and imaging system for multiwell plates

Doubly telecentric lens and imaging system for multiwell plates

Doubly telecentric lens and imaging system for multiwell plates

Downsize, high performance, and wide range magnification...

Downsize, high performance, and wide range magnification...