850nm Optical Bandpass Filter with 40nm FWHM

This high-performance optical bandpass filter is engineered to transmit light centered at 850nm, featuring a Full Width at Half Maximum (FWHM) of 40nm. It offers broad spectral transmission with effective wavelength isolation.

Specifications:

• Central Wavelength: 850nm
• Full Width at Half Maximum (FWHM): 40nm
• Transmission Range: Passes light between approximately 830nm and 870nm, with peak transmission at 850nm.
• Blocking Range: Minimizes transmission outside the 850nm ±20nm range, effectively reducing unwanted light interference.

Features:

• Wideband Transmission: Allows a broad spectrum around 850nm to pass, suitable for applications needing extensive wavelength coverage.
• High Efficiency: Maximizes transmission at 850nm for precise optical measurements and high signal quality.
• Advanced Coatings: Utilizes specialized coatings for enhanced durability, spectral purity, and minimal distortion.

Applications:

• Telecommunications: Ideal for fiber optic communication systems operating at 850nm, ensuring efficient data transmission and signal integrity.
• Imaging: Enhances imaging systems by filtering out unwanted wavelengths, improving image resolution and contrast.
• Spectroscopy: Useful in spectroscopy for broad wavelength isolation around 850nm, aiding in material analysis and environmental monitoring.
• Biomedical Research: Supports applications such as fluorescence microscopy, where broad wavelength transmission around 850nm improves signal clarity.

Coligh’s stock standard 850nm thin film optical filters feature:

• Feature: NIR bandpass filter
• Center wavenelgt： 850±5nm
• FWHM: 40±5nm
• Blocking range: 200-1100nm
• Blocking depth: OD3
• Transmission average: Above 90%
• Thickness：0.5mm, 0.55mm, 0.7mm, 1.0mm, 1.1mm
• Size: Any size below 100*100mm

Custom option:

• Bandwidth: 10nm, 25nm, 30nm, 50nm,70nm, 100nm, 150nm any bandwith client request
• Blocking depth:  OD4, OD5, OD6 is availiable
• Size: round or square smaller than 100*100mm
• Material thickness: Depend on request
• Transmission and blocking rang: custom as per requirement or between 200nm to 1500nm