MSE PRO Long-Pass Filters

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MSE supplies offers customized Long-Pass Filters with different materials, dimension, surface qualify, etc.

Long-Pass Filter is a kind of edge pass filters. It allows light with wavelength larger than a certain value (cut-on wavelength) to pass and block the rest. It is widely use in Raman spectroscopy, band separators, etc. 

MSE Supplies can offer a variant of optical elements, with different materials, size, surface quality and coating. Please contact us for customization or bulk orders. 

Technical Data:

Parameters Value
Material Optical Glass
Size (mm) 2-300
Size Tolerance (mm) +0/-0.01~+0/-0.1
Thickness Tolerance (mm) ±0.01~±0.1
Irregularity (P-V) @ 632.8nm λ/10~λ/2
Surface Quality 10/5~60/40
Parallelism <3”~3'
Clear Aperture (%) >90
Bevel Protective bevel as needed