At Z-Optics, we engineer hard-coated BANDPASS FILTER – FWHM 1~2nm optics for high-precision Raman spectroscopy, fluorescence, and laser selection. Featuring center wavelengths from 375nm to 1064nm, these narrow bandpass filters deliver peak transmission up to 90%, deep out-of-band rejection (OD4 across 200-1200nm), and standard diameters of 12.7mm and 25.4mm. Designed to meet strict industrial standards, they maximize the signal-to-noise ratio in advanced instrumentation.

Our high-durability BANDPASS FILTER – FWHM 1~2nm lines are highly optimized for use across various high-end optical instruments, including fluorescence systems and laser line selection. Every band filter is built using hard-coated thin-film sputtering technology, ensuring excellent thermal stability and environmental durability. Spanning center wavelengths from 375nm up to 1064nm, these units maintain a robust OD4 optical density rejection profile across the 200–1200nm range to keep background noise completely isolated.

By deploying our hard-coated precision optics, engineering teams can confidently isolate tight spectral lines while eliminating unwanted background noise or secondary laser harmonics.

Key Features

Ultra-Narrow Bandwidth: FWHM 1–2 nm for precise isolation of target wavelengths-minimize noise, maximize signal integrity.

High Transmission: Up to 90% peak transmission at centre wavelengths-optimize light throughput for sensitive detection.

Broad Blocking: OD4 blocking (1:10,000 attenuation) across wide out-of-band ranges (see individual product specifications)-eliminate stray light and improve signal-to-noise ratios.

Precision Centre Wavelength: ±0.2–0.5 nm accuracy-ideal for systems requiring repeatable, calibration-grade performance.

Wide Spectral Coverage: Comprehensive portfolio from UV to NIR (375–1064 nm)-match your application with the optimal filter.