2nm bandwidth ultra narrow band filter

2nm bandwidth ultra narrow band filter

We have successfully developed an ultra narrow band filter with a bandwidth of 2nm. The central wavelength can cover the range of 400-900nm. The cutoff from OD4 to OD5 can be achieved in the range of 200-1200nm, and the peak transmittance can reach more than 80%. The process has achieved normal mass production capacity and has provided nearly ten types of ultra narrow band filters for a domestic aerospace department. This kind of filter can be used when the incident angle is small and the signal-to-noise ratio is high.

Optical filter Product Examples

BP391/2K
0 ° incidence
Central wavelength: 391+/- 0.5 nm
FWHM: 2+/-0.5nm
Peak transmittance: T>65%
Cut off range: 200-900nm
Cut off depth: OD4
Size: Φ Specific value of 25.4 (+0~- 0.3) X2.3 (± 0.15) transmissivity

BP428/2K
0 ° incidence
Central wavelength: 428+/- 0.5 nm
FWHM: 2+/-0.5nm
Peak transmittance: T>70%
Cut off range: 200-900nm
Cut off depth: OD4
Size: Φ Specific value of 25.4 (+0~- 0.3) X2.3 (± 0.15) transmissivity

ABOUT BORISUN

Hanzhong Brisun Optics Co., Ltd. Is the high precision optical element manufacturer provides customized production of Various optical lenses, including spherical lens, cylindrical lens, optical window, mirror, prism, filter, metal base mirror and other high-precision optical elements. The base materials include various optical glass, fused quartz, calcium fluoride (CaF2), zinc selenide (ZnSe), germanium (GE), silicon (SI), sapphire, metal and other materials. And provide antireflective film, high reflection film, spectroscopic film, metal film and other optical coatings.

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