ROCOES Optical

Absorptive Color Glass Filters (Optical Colored Glass Optics)

Color glass filters (also referred to as optical colored glass, ionic absorption filters, or mass-colored optical filters) are optical elements produced by doping optical glass melts with targeted metallic oxides or rare-earth elements. Unlike interference filters that reflect rejected light, color glass filters utilize bulk material absorption to selectively attenuate unwanted spectral bands.

Functions:
Imparts continuous bulk spectral absorption throughout the entire substrate matrix, providing precise transmission or blocking across single or multiple wavelength bands. Features excellent angle-of-incidence (AOI) stability (no spectral wavelength shift under off-axis illumination), zero surface reflection ghosting, and robust, uniform optical performance resistant to surface scratches.

Applications:
Imaging equipment
Medical diagnostic instruments
DNA fluorescence analysis systems
Counterfeit banknote detection devices
Precision optical measurement equipment
Automated Optical Inspection (AOI) machine vision systems