Optical filters that have spectral characteristics in the glass. Isuzu Glass supplies a variety of filters for Opto - electronics, Office Automation Equipment, Photographic, Lighting, Medical equipment and other applications. The filter glasses have their own spectral characteristics, and the glasses that are manufactured under strict quality control have a minimum amount of bubbles and striae. We proudly produce glasses that are physically and chemically stable, and do not experience the aging problems. Please contact us with your specific filter requirements.