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

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Categories	IR Cut / IR Pass Filters
Brand	FELIX GLASS optical glass Manufacturing base
Model	FG-LWIR-4001100-FS
Substrate	: Fused silica quartz glass
FWHM	(Customizable)
Peak Transmission	≥90% peak transmittance,
Core Spec	: 400–1100nm passband,
Shape	Custom round disc, square sheet
Coating	AR+ITO dual coating
Application	Industrial optical inspection, spectral measurement, near-infrared detection
Unit Price	US $ 8.6-14.8 / piece
FOB port	SHENGZHEN SHANGHAI GUANGZHOU
Terms of Payment	L/C, D/A, D/P, Western Union
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Detail Information

400–1100nm Long-Wave IR Bandpass Filter with AR & ITO 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.

Core Optical Specifications

- 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

Core Product Advantages

- 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

Typical Application Scenarios

- 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

OEM Manufacturing Capability

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.

Request a Quote

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.

FAQ

1. What spectral range does this long-wave IR filter cover?

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

2. What substrate material is adopted for this 400-1100nm bandpass filter?

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.

3. What functions do AR and ITO composite coatings provide?

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

4. Can I customize the size and shape of this fused silica infrared filter?

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

5. Do you supply sample and mass production services for coated optical filters?

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

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Learn more from our FAQ

What is your MOQ for custom optical glass and display glass parts?: Felix Glass offers highly flexible MOQ to support client projects, including prototype testing, small batch trial orders and large-volume mass production. All products can be fully customized according to your drawings, tolerances and application standards. Send us your specs to get an accurate price quote within 24 hours.

Can I get free glass samples for testing before bulk order?: Yes, our FELIX GLASS factory supports sample testing for a wide range of precision optical glass components and assemblies. The lead time for sample production is 3 to 7 working days. Please contact us today to arrange samples and obtain a customized solution that meets your needs.

What is the production lead time for custom optical glass components?: What is the production lead time for custom optical glass components?
Answer: The lead time for standard samples is 3–7 business days, while mass production takes 15–25 business days, depending on product complexity and order volume. We provide reliable, rapid delivery for orders serving the industrial, medical, automotive, and aerospace sectors. Please submit your project details to receive an accurate delivery schedule.

Are your optical glass products ISO, CE and RoHS certified?: All FELIX GLASS precision optical glass components comply with ISO quality system standards, as well as CE and RoHS requirements. We provide comprehensive test reports, material certificates, and inspection documentation for customer review. Please feel free to request full certification details and a formal quotation today.

Do you offer one-stop custom optical glass processing services?: Yes. We provide a full range of in-house processing services, including CNC machining, precision grinding, optical polishing, vacuum coating (AR, AF, AG, IR), tempering, and screen printing. Every step—from raw material to finished product—is carried out within our own facility. Please let us know your requirements, and we will provide you with the most cost-effective solution.