Isolates specific spectral regions by transmitting a narrow wavelength band while reflecting unwanted light. They provide high signal-to-noise ratios, ideal for machine vision, sensing, and environmental monitoring.
Diameter range: 5 mm- 200 mm ±0.1 mm
Dimensional tolerance: ±0.05mm
Center wavelength: 350nm-2500nm
Surface Accuracy: λ/8
A band-pass filter is an optical filter designed to transmit a specific band of wavelengths while rejecting (cutting off) unwanted light on both sides of the transmission band. Based on their spectral characteristics, band-pass filters are generally classified into two categories: band-pass (broadband) filters and narrow band-pass filters. Both types are typically manufactured by combining multiple optical layers utilizing the principles of light interference. Today, band-pass filters are widely utilized across a diverse range of fields and applications.
| Material | K9, Bk7, GJS1, GJS2,GJS3, B270 |
| Diameter tolerance | ±0.05 mm |
| Surface accuracy | λ/4@ 633nm or λ/10@633nm |
| Surface quality (S/D) | 60/40 or 20/10 |
| Effective caliber | 90% |
| Chamfer/beve | <0.1*45° |
| Center wavelength | 350nm-2500nm |
| Peak transmittance | >90% customized upon request |
| Half-peak bandwidth | 10nm-15nm |
