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

Balancing method for color wheel

Beam direction control element and method of manufacturing same

Beam scattering laser resistant structure

Broad band pass filter including metal layers and dielectric lay

Broadband self-activated optical power limiter system and device

Buckminsterfullerenes for optical limiters

Color changing device

Color changing device for illumination purposes