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Short Pass Filter
Short Pass Filter
Short Pass Filter
Short pass filter allow the shorter wavelength throught, and cut off the longer wavelength.These filter mainly used in Beauty equipment, police multiband testing instruments, strong light flashlight, stage lighting shade, four-wheel, iris recognition system, face recognition attendance device, optical instruments.
 
     Manufacture Specifications
 Diameter  2mm to 200mm
 Diameter Tolerance  +0.00/-0.1 or customer size
 Material   N-BK7,H-K9L,Sapphire,Fused Silica(JGS1),Caf2,ZnSe,Si,Ge,etc.
 Surface Quality  80-50 to 10/5
 Flatness   1 lambda to 1/10 lambda
 Thickness Tolerance   +0.00/-0.05mm
 Standard wavelength  270nm,311、360、380、473、532、650、780、808、850、904、940、1064 and 1900nm.
 Transmission  7.5~11 μm: Tavg >90%, Tmin >80% 1.5~7.2μm: Tmax <3%
 Transmission  60% to 99%
 Average blocking  0.1%,0.01%,0.001%.0.001 
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