Absorbent laser resistant structure
Absorption type multi-layer film ND filter
Absorption type multi-layer film ND filter and process for...
Active resonant filter
Aligning-assembling method for color wheel
Antiglare optical device
Apparatus for obtaining a desired tint
Apparatus for positioning apertures of a disk assembly
Apparatus for producing a monochromatic light beam
Apparatus for switching optical low pass filters for use in...
Apparatus for use in forming colored segments of a color filter
Arrangement of color elements for a color filter