Optical K9 Glass BP440nm Blue Light Narrow Bandpass Filter Optical Component for Fluorescence Analyzer

The 440nm narrowband filter is an optical component derived from bandpass filters, with the core function of allowing light signals at a wavelength of 440nm to pass through while blocking signals on both sides outside this band. Compared to ordinary bandpass filters, it has a narrower passband, typically below 5% of the central wavelength value.

Product Technical Features

• All-dielectric hard coating technology: Utilizes the principle of dielectric interference, where optical performance is independent of substrate thickness, making it easy to integrate into imaging systems of instruments and enhancing optical performance¹.
• Special optical material substrate: Addresses issues such as fogging and unstable optical performance commonly found in traditional absorptive synthetic glass, ensuring long-term reliability of the product¹.
• Customized production: Can be manufactured according to customer specifications (e.g., transmittance, cutoff wavelength, etc.)¹.

Application Fields of 440nm Narrowband Filters

This product is widely used in scenarios requiring high-precision filtering of specific wavelength light signals, including:

• Biochemical analyzers: Used for optical detection of biological samples, accurately isolating target wavelength signals.
• Optical measuring instruments: Enhances measurement accuracy and reduces stray light interference.
• Microplate readers: Filters background light in immunoassays to enhance the specificity of detection signals.
• Biometric recognition: Optical signal processing in devices such as fingerprint and iris recognition systems.
• Fields such as infrared medical instruments, fluorescence analyzers, and medical detection equipment;