Absorption type multi-layer film ND filter

Absorption type multi-layer film ND filter and process for...

Antiglare optical device

Compositions and devices for thermo optically controlled...

Consolidated laser alignment and test station

Converging optical system for laser beam source

Dual complementary two-color optics which enables a user to...

Gradient filter

Light amount adjusting device, and optical device using the...

Medium for a color changer

Method and apparatus for color-neutral brightness regulating...

Method and apparatus to improve across field dimensional control

Method and device for improved lithographic critical...

Method and device for improved lithographic critical...

Method of manufacturing ND filter, and aperture device and...

Monolithic hard pellicle

ND filter and aperture device including the same

ND filter and aperture device using the same

ND filter and aperture diaphragm apparatus

ND filter for aperture device and aperture device comprising...