Optical Glass Longpass Filter  Worldhawk can provide precision filters for many applications, including bandpass interference filter, Cut off filters, UV bandpass filter, Narrow bandpass filter, ND filter, Negative Filter or Notch filters, dichroic, color substrate. Optical Filters are used to selectively transmit or reject a wavelength or range of wavelengths. Optical Filters are used in applications such as fluorescence microscopy, clinical chemistry, spectroscopy, or machine vision inspection. Optical Filters are ideal for life science, imaging, industrial, or defense industries. Custom filters are available for both large manufacturing needs and in prototype volumes. Contact us for more information to arrange a quote. Cut Off filters  - Dichroic Filter - Longpass Edge Filters   ( Long pass Filters) - Shortpass Edge Filters   ( short pass Filters) - IR Cut Filters   ( IR-CUT Filter) - UV-IR Cut Off Filters   Longpass Filters transmit wavelengths greater than the cut-on wavelength, while Shortpass Filters transmit wave-  lengths shorter than the cut-off wavelength. Dichroic filters perform the same function, while guaranteeing that the  rejected wavelengths are reflected. Any of these filters can be designed for 0  or 45  angle of incidence. Edge and Di- chroic Filters are commonly used in Fluorescence instrumentation, Heat Rejection Applications, and as Color Filters.  While somewhat angle sensitive, they are more forgiving than bandpass interference filters.    UV IR Cut is a specialized filters that has the ability to cut both UV rays below 400nm and IR rays above 680mn leaving just the light rays in the visible spectrum passing through the filter and into the camera.This filter is used on a digital camera and the video    350-405nm:Tavg<10% 415±10nm:T=50% 430-630nm:T>85%, Tavg>90% 650±10nm:T=50% 700-1100nm:T<3%