China Suppliers Infrared Broadband Filter IWBP3000-5000 - High Efficiency Optical Device | Factory Direct

Definition: A high-quality infrared broadband filter is an essential optical device engineered to allow infrared light transmission within a specific range, while efficiently blocking unwanted wavelengths. This filter is designed to transmit a broad spectrum of infrared light, from 0.9 micrometers to 12 micrometers, ensuring optimal efficiency. The superior performance of our infrared broadband filter is achieved through a sophisticated multilayer thin film structure developed in our factory. Each layer is carefully crafted with precise refractive indices and thicknesses, allowing for remarkable manipulation of light. As infrared light interacts with these layers, various wavelengths experience distinct levels of reflection, absorption, and transmission due to differences in speed and direction. This advanced technology makes our infrared broadband filters a top choice among suppliers in China, effectively filtering the desired infrared light for various applications.

Product Details

Product Technical Parameters

Substrate: Si

HT Area: 3000–5000 nm

Tp: ≥ 85%

Blocking: 1500–11000 nm

IWBP 3–5 μm Bandpass Filter

? Frequently Asked Questions

Q What substrate material is used in this bandpass filter? +

This bandpass filter uses Silicon (Si) as the substrate material. Silicon is an ideal choice for mid-infrared optical applications due to its excellent transmission properties in the 1.2–7 μm spectral range, high mechanical strength, and thermal stability.
Q What is the high-transmission (HT) wavelength range of the IWBP 3–5 μm filter? +

The high-transmission (HT) area spans from 3000 nm to 5000 nm (3–5 μm). Within this range, the filter achieves a transmittance (Tp) of ≥85%, making it well suited for thermal imaging, gas detection, and infrared spectroscopy applications.
Q What is the blocking range of this filter? +

The filter provides effective blocking across the wavelength range of 1500–11000 nm, covering the near-infrared through long-wave infrared spectrum. This broad blocking range ensures that only the desired 3–5 μm band passes through, suppressing unwanted stray light and improving measurement accuracy.
Q What typical applications is the IWBP 3–5 μm bandpass filter designed for? +

This filter is commonly used in applications such as thermal infrared cameras, industrial gas sensing and analysis, environmental monitoring systems, medical diagnostic equipment, non-destructive testing (NDT), and military or defense infrared imaging systems that operate in the 3–5 μm atmospheric transmission window.
Q Can this bandpass filter be customized to meet specific optical requirements? +

Yes, customization is available. Parameters such as center wavelength, bandwidth (FWHM), substrate size and thickness, coating specifications, and edge steepness can be tailored to match specific system requirements. Please contact our technical team with your application details for a custom quote.
Q How should the IWBP 3–5 μm filter be handled and stored to maintain performance? +

To preserve the optical coating and substrate integrity, always handle the filter with clean lint-free gloves and avoid touching the optical surfaces. Store the filter in a dry, dust-free environment at room temperature, away from moisture, solvents, and strong mechanical vibrations. Use the original protective packaging whenever the filter is not in use.