High Spectral Accuracy Optical Glass Reflective ND Filters for Surveillance Cameras

High Spectral Accuracy Optical Glass Reflective ND Filters for Surveillance Cameras. High Wavelength Selectivity: Precise response to narrow (<1mm) or specific wavelength ranges for accurate spectral extraction. High Transmission Efficiency: Passband transmission exceeds 90%-95% with deep blocking up to OD4-OD6 in stopband regions. Customizable Dimensions: Available in standard sizes from 15x15mm to 80x80mm with custom shapes upon request. Durable Hard Coating: Resistant to high temperatures, humidity, and abrasion with immunity to spectral drift. OEM/ODM Services: Full customization available for sizes, packaging, and specific optical features. Versatile Material Options: Manufactured using K9 Optical Glass, Plastic, or ZnSe substrates for various applications. Advanced Coating Technology: Utilizes Ion Beam Sputtering (IBD) or electron-beam evaporation for multilayer thin-film structures. Broad Wavelength Range: Operates effectively across 200nm to 1100nm covering UV, visible, and near-infrared spectra.