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850nm High Temperature Resistance Narrow Bandpass Filter-No Temperature Drift

Centre Wavelength: 850nm, 940nm
FWHM: 20nm, 30nm
 
Size: Customized
 
Substrate: Customized or suggested by Lenoptec
Some special equipments require the filters work under a certain high temperature and still keep the same spectrum features, especially the high transmission of the centre wavelength. Usually, the transmission curve of optical coatings will drift 3-5nm to the left while temperature rises to 70íŠ or above, to narrow bandpass filter, it will cause the low transmission of the expected wavelength point. Lenoptec? find the way to avoid this problem of temperature drift and allow the narrow bandpass filter still keep the same spectrum features at a high temperature.

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