1.We can provide various long pass filter according to your needs.
2.excellent quality and reasonable price

long wave pass filters 
Optical filters selectively transmit light with certain properties, while simultaneously blocking remaining light. Filters are utilized for color separation in CCD imaging, machine vision, digital projection and photographic applications.
Detailed Description
Long pass filter
Transmission wave:610nm -1100nm
Center wavelength:630nm
T>90%
Block wavelength:400nm-610nm
Block deepth<1%
Dia.:customized
Thickness: customized
Surface quality:60/40
Flatness:1/4lambda
Protective chamfer:0.2mm