850nm Bandpass Filter IR Bandpass Filter 850nm For Surveillance

An IR bandpass filter 850nm is an optical filter designed to allow a range of infrared wavelengths to pass through while blocking all other wavelengths of light. These filters are commonly used in applications that can help to improve image quality and accuracy and reduce interference from ambient light sources, such as in machine vision, surveillance, and industrial automation.

Our 850nm bandpass filter are typically made by depositing a series of thin film layers onto a substrate, with each layer having a specific thickness and refractive index. They have high transmittance in the pass band and a high cut-off rate in the blocking band. We take the pride in our outstanding products and we also offer OEM customized support to ensure that our products meet your specific requirements.

Features

- Ultra-narrowband

- High level of transmission rate

- High contrast

- Hard durability

- Stable environmental coating

- ISO9001, ROHS certified

Parameters

Spectrum transmission curve

Applications

850nm IR optical filters are widely used in applications that require filtering out visible light and allowing only near-infrared (NIR) light to pass through. Some common applications of 850nm IR optical filters include:

- Night Vision

- Surveillance

- Medical Imaging

- Agriculture

How does 850nm IR optical filter apply in surveillance?

IR bandpass filter 850nm is commonly used in surveillance cameras to enable the cameras to capture images in low light conditions without visible light. Infrared light in the 850nm wavelength range is invisible to the human eye but still detectable by many cameras.

In low-light conditions, the camera switches to "night mode," and the built-in infrared LEDs illuminate the area with infrared light. The 850nm bandpass filter in the camera's lens blocks visible light, allowing only infrared light to pass through to the sensor.

This enables the camera to capture clear images and videos of the monitored area, even in complete darkness, without additional lighting. The use of 850nm IR optical filters also helps to reduce the chances of detection, as the infrared light emitted by the camera is invisible to the human eye.

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