400-1100nm bandpass filter IR Bandpass Filter, Fused Silica With AR & ITO Optical Coating

 

Felix Glass long-wave infrared bandpass filter is a high-performance fused silica optical component designed for broadband near-infrared applications. This filter delivers continuous transmission across the 400–1100nm spectral range, equipped with combined anti-reflection (AR) and conductive ITO coating to meet optical and electrical shielding demands.

 

Fused silica quartz substrate provides excellent thermal stability and low spectral absorption, maintaining stable performance in wide-temperature working environments. Precision multi-layer coating ensures consistent high transmittance throughout the target passband.

 

- Passband Range: 400 nm – 1100 nm broadband transmission

- Peak Transmission: ≥90% within 400–1100nm spectrum

- Substrate: High-purity fused silica quartz glass

- Functional Coating: Dual AR anti-reflection coating + conductive ITO coating

- Shape: Custom round disc, square sheet, arbitrary tailor-made dimensions

- AOI: 0° standard, custom incident angle supported

- Blocking: Custom out-of-band suppression available per drawing

 

 

- Broad 400–1100nm long-wave infrared passband, covering visible to near-infrared spectrum

- Dual AR+ITO composite coating: boosts light transmittance and provides electromagnetic shielding performance

- Fused silica quartz substrate features superior heat resistance and low intrinsic absorption

- Uniform coating layer with stable spectral performance, no obvious transmission fluctuation

- Fully customizable size, thickness, edge blackening and special blocking requirements

- Stable glass substrate structure suitable for long-term integration into industrial optical detection modules

 

 

- Industrial near-infrared optical inspection systems

- Spectral analysis and measurement instruments

- Machine vision broadband infrared detection equipment

- Optical testing laboratory instruments

- Conductive optical window modules with electromagnetic shielding demand

- Medical infrared imaging detection devices

 

 

We provide full one-stop custom processing including fused silica cutting, precision shaping, dual AR&ITO coating, edge finishing and strict spectral transmission testing and surface inspection.

Support prototype sampling, small trial batches and mass volume production. Each long-wave IR bandpass filter is fully tested to meet customer-specified spectral, dimensional and coating requirements before delivery.

 

 

Kindly provide your required dimension, shape, spectral tolerance and coating specifications. Our optical engineering team will deliver customized 400-1100nm fused silica IR filter solutions and factory direct quotation.

 

 

It offers continuous broadband transmission across 400nm to 1100nm, covering visible light and near-infrared long-wave spectrum for general industrial optical detection.

High-purity fused silica quartz glass is used as substrate, which delivers outstanding thermal stability and low optical absorption compared with ordinary N-BK7 glass.

AR anti-reflection coating improves overall light transmittance up to over 90%; conductive ITO coating provides electromagnetic shielding performance for optical windows.

Yes, we support custom round, square outlines, together with adjustable thickness, edge blackening and special out-of-band blocking parameters according to technical drawings.

We offer prototype sampling, small batch trial orders and large-scale manufacturing, every filter passes complete spectral and surface inspection before shipment.