BP266nm Bandpass Filter | CWL 266nm, FWHM 8±2nm, OD2 Blocking, 1.0mm
The OPTOStokes BP266 is a high-precision bandpass filter optimized for deep ultraviolet silicon wafer defect inspection applications. Engineered with advanced ion-assisted thin film coating technology, it provides transmission greater than 90 percent across the 265–266nm range, with an ultra-narrow full width at half maximum of 8±2nm. This 1.0mm thick filter delivers reliable high OD blocking across the entire 200–475nm spectrum with optical density greater than 2, ensuring exceptional signal-to-noise ratio for high-sensitivity semiconductor inspection systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | BP266 |
| Transmission Band | 265–266nm, transmission greater than 90 percent |
| Full Width at Half Maximum (FWHM) | 8±2nm |
| Blocking Range & Optical Density | 200–475nm, optical density greater than 2 |
| Substrate Thickness | 1.0mm |
Applications
This high transmission narrowband deep UV bandpass filter is specifically engineered for applications requiring precise spectral selection at 266nm, a critical wavelength for detecting nanoscale defects on semiconductor wafers. Its exceptional optical performance makes it ideal for:
Silicon wafer and semiconductor defect inspection systems
Integrated circuit (IC) manufacturing quality control
266nm laser processing and material microanalysis
Deep UV microscopy and surface topography inspection
Semiconductor lithography alignment systems
High-precision UV optical measurement equipment
Customization & Service
OPTOStokes offers comprehensive custom optical filter solutions to meet your exact semiconductor manufacturing requirements. We manufacture deep UV bandpass filters in standard circular, square and custom irregular shapes, with optional precision mounting rings for seamless integration into your optical assemblies. Our extensive in-stock inventory ensures fast shipping for standard specifications, while our advanced cleanroom manufacturing capabilities deliver custom orders with reliable, predictable lead times. All products are manufactured to world-class quality standards and undergo rigorous 100% optical testing before shipment.
Pain Points & CTA
Semiconductor inspection teams often face critical challenges: insufficient blocking of unwanted UV wavelengths, inconsistent spectral performance across production batches, and long lead times for custom deep UV components. These issues can reduce defect detection accuracy, increase false positives, and delay production schedules. At OPTOStokes, we solve these problems with our extensive ready-to-ship inventory, proprietary UV coating technology, and dedicated technical support team. Whether you need a single prototype for testing or high-volume production runs, we deliver precision optical components on time, every time.
For detailed datasheets, volume pricing, or to discuss your specific filter requirements, contact our expert team at [email protected] or submit an inquiry through our website today.
