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
