Bandpass Filter, FWHM=10 nm MBF10-635-10

Bandpass Filter, FWHM=10 nm — Model MBF10-635-10

Ø25.4 mm, substrate Schott Borofloat & Soda Lime.

Product Description

• Stopband Range: 200 nm-1100 nm, 200 nm-1200 nm
• Stopband OD Value: ≥4
• FWHM=3±0.6 nm, 10±2 nm, 25±3 nm, 50±5 nm
• Center Wavelength: 405-1064 nm
• Outer Diameter 25.4 mm, with mechanical retaining ring

LBTEK bandpass and laser line filters are manufactured by vacuum deposition of optical thin-film materials on substrates. A filter typically consists of multiple dielectric film stacks with different refractive indices, forming a Fabry-Perot (F-P) interference cavity between the dielectric films and the intermediate spacer layer. The thickness of the dielectric films is λ/4, and the thickness of the intermediate spacer layer (F-P cavity) = (nλ)/2 (where λ is the design center wavelength and n is an integer), satisfying constructive interference at the center wavelength. Therefore, only the center wavelength can fully transmit. By changing the thickness of the spacer layer and the number of dielectric film layers, the center wavelength and bandwidth of the filter can be adjusted. In addition to standard line filters, LBTEK also offers customized services for various filters. If you have special requirements, please contact LBTEK technical support.

Bandpass Filter, FWHM=10 nm

• Center Wavelength: 405 nm-1064 nm
• FWHM: 10±2 nm
• Stopband Range: 200 nm-1100 nm, 200 nm-1200 nm

LBTEK filters are mounted in black anodized aluminum rings, with the incident direction marked by an arrow on the housing for easy installation and use.  In order to prevent the substrate coated with the cutoff material from being subjected to radiation outside the passband wavelength, which may cause thermal effects and reduce the filter characteristics, it is recommended that the side coated with the cutoff film face the light source (light propagates in the direction of the arrow). The filter's dielectric coating thickness is designed based on collimated light incident perpendicularly. If the light is not collimated or incident perpendicularly on the filter surface, the designed center wavelength will shift to a shorter wavelength, and the bandpass transmittance curve will change. All LBTEK circular lenses can be mounted in LBTEK standard lens tubes, fixed lens mounts, and various coaxial mounting plates. Customers can select the optimal mounting method for different application scenarios.