640nm narrow band filter
640nm visible narrow-band filter is one of the optical application schemes of laser ranging filter. Compared with photoelectric rangefinder, laser rangefinder can not only work day and night, but also improve the ranging accuracy due to the characteristics of good monochromaticity and strong directionality of laser and the semiconductor integration of electronic circuits.
|Half peak bandwidth
|> 90% (according to customer demand)
|Cut off wavelength
|200nm-1100nm (according to the customer requirements)
|Cut off depth
|optical grade glass (K9, BK7, B270, d263t, JGS1, color glass, float glass, etc.)
|national standard grade III /American Standard 60-40
In addition, We can customize the optical filters according to customer requirements or drawings.
For details, please consult: