850nm Optical Bandpass Filter with 70nm FWHM

It is designed to transmit light centered around 850nm while effectively blocking wavelengths outside its specified range. With a Full Width at Half Maximum (FWHM) of 70nm, this filter provides broad spectral transmission with excellent wavelength isolation.

Specifications:

• Central Wavelength: 850nm
• Full Width at Half Maximum (FWHM): 70nm
• Transmission Range: Passes light between approximately 815nm and 885nm, with peak transmission centered at 850nm.
• Blocking Range: Significantly attenuates wavelengths outside the specified transmission range to reduce interference and improve signal clarity.

Features:

• Broadband Transmission: Designed to allow a wide range of wavelengths around 850nm to pass through, making it suitable for applications that require broader spectral coverage.
• High Transmission Efficiency: Ensures optimal light throughput at the central wavelength, maintaining high optical performance.
• Durable Coatings: Equipped with advanced coatings for enhanced durability, minimal spectral distortion, and long-lasting performance.
• Robust Construction: Made from high-quality optical materials to withstand various environmental conditions and deliver reliable performance.

Applications:

• Optical Communication: Ideal for fiber optic communication systems operating in the 850nm wavelength range, where broadband transmission is crucial for data integrity and signal quality.
• Imaging Systems: Useful in imaging applications where broader wavelength isolation is needed to improve contrast and detail.
• Spectroscopy: Suitable for applications requiring a broad wavelength band for spectral analysis, such as in fluorescence spectroscopy or environmental monitoring.
• Biomedical Research: Supports applications like fluorescence microscopy and other imaging techniques that benefit from wide spectral transmission.

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

• Feature: NIR bandpass filter
• Center wavenelgt： 850±10nm
• FWHM: 70±10nm
• Blocking range: 200-1100nm
• Blocking depth: OD2, OD3
• Transmission average: Above 80%
• Thickness：0.5mm, 0.55mm, 0.7mm, 1.0mm, 1.1mm
• Size: Any size below 100*100mm

Custom option:

• Bandwidth: 10nm, 25nm, 30nm, 40nm, 50nm, 60nm,  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 2000nm