660nm Narrow Band Filter

The 660nm narrow band filter is subdivided from the band pass filter. Its definition is the same as that of the band-pass filter. It allows the optical signal to pass in a specific band, and the optical signals on both sides that deviate from this band are blocked. However, the passband of narrow band filter is relatively narrow, which is generally less than 5% of the central wavelength.

Features of 660nm narrow band filter: it adopts the technology of all dielectric hard film coating and the principle of dielectric interference. On the basis of highlighting the characteristics of narrow band filter, the optical performance is independent of the substrate thickness. The narrow band filter produced by Borisun Optics is more convenient to be built into the instrument imaging system. To improve and effectively apply its optical performance, special optical material substrate is adopted to solve the problems of fog prone and unstable optical performance of absorption synthetic glass in the traditional sense. The products are produced according to the index needs of customers.

670nm filter
Technical parameters
Items Parameters
Center wavelength 660nm+-2nm
Half peak bandwidth 20nm
Peak transmittance > 90% (according to customer demand)
Product size 3mm-80mm (customizable)
Incident angle
Cut off wavelength 200nm-1100nm (according to the customer requirements)
Cut off depth >OD4-OD6 UV-NIR
Product material optical grade glass (K9, BK7, B270, d263t, JGS1, color glass, float glass, etc.)
Surface quality national standard grade III /American Standard 60-40
spectral curve

In addition, We can customize the optical imaging system filters according to customer requirements or drawings.

For details, please consult:

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