905nm Bandpass Filter with 40nm FWHM

This precision optical bandpass filter is designed to selectively transmit light centered at 905nm while blocking wavelengths outside of its specified range. Featuring a Full Width at Half Maximum (FWHM) of 40nm, this filter offers a broad spectral transmission band with effective isolation of non-target wavelengths.

Specifications:

• Central Wavelength: 905nm
• Full Width at Half Maximum (FWHM): 40nm
• Transmission Range: Passes light between approximately 885nm and 925nm, with peak transmission centered at 905nm.
• Blocking Range: Significantly attenuates wavelengths outside the 905nm ±20nm range to reduce interference and improve signal clarity.

Features:

• Broadband Transmission: Designed to allow a wide range of wavelengths around 905nm to pass through, making it suitable for applications that require a broader spectral coverage.
• High Transmission Efficiency: Optimized for excellent light throughput at the central wavelength, ensuring clear and accurate optical measurements.
• Advanced Optical Coatings: Features high-quality coatings that enhance performance, durability, and spectral purity.

Applications:

• LiDAR Systems: Ideal for LiDAR (Light Detection and Ranging) applications where 905nm is a common wavelength for distance measurement and 3D scanning.
• Imaging Systems: Useful in imaging applications where broader wavelength isolation is needed to enhance contrast and detail.
• Spectroscopy: Suitable for spectral analysis that requires broad wavelength transmission around 905nm, such as in environmental monitoring or material analysis.
• Biological and Medical Research: Supports applications such as fluorescence microscopy and optical sensing where specific wavelength isolation improves signal detection and clarity.

Coligh’s stock standard 905nm bandpass filter feature:

• Feature: NIR bandpass filter
• Center wavenelgth: 940±10nm
• FWHM: 40±10nm
• 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: 20nm, 30nm, 45nm, 50nm, 85nm, 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