640nm Red 10nm Band Pass Filter

640nm Red 10nm Band Pass Filter   640 nm visible Band Pass Filter represents one of the optical application schemes used in laser rangefinding systems. Compared to conventional photoelectric rangefinders, laser rangefinders offer the advantage of all-day operation and improved ranging accuracy. This is attributed to the inherent characteristics of lasers, such as excellent monochromaticity and strong directionality, combined with the integration of semiconductor electronics.   With a passband centered at 640 nm and a full width at half maximum (FWHM) of 10 nm, this filter effectively cleans up the output from red diode or DPSS lasers, thereby enhancing contrast in optical inspection tasks. Industry catalogs specify hard-coated filter families centered at 640 nm with a 10 nm bandwidth, featuring OD4-level blocking and steep transition edges, which demonstrate the achievable performance standards. Our D12×6 mm format is compatible with lens-tube and barrel mounting configurations.  

Cut Off Type Glass Selective Absorption Glass Laser System Optical Filter Health Biological Filter Narrow Band Pass Filter