Longpass Filter

Longpass Filter

One side is coated with a hard dielectric long-pass optical filter film, and the other side is coated with an anti-reflection film to achieve high transmittance and high damage threshold.


Description Of Longpass Filter


BRD Optical has the advantages of wide cut-off band width, deep cut-off depth, high conversion steepness and high transmittance. It can be widely used in fluorescence excitation spectrum measurement, Raman spectrum application, spectrum grouping application, and astronomical observation application, etc. It can also be widely used in imaging optical system, machine vision system application, used to eliminate the interference light outside the available band, greatly improve the imaging clarity, as well as the sensitivity of the system.


Description Of Ir Longpass Optical Filter

Specifications Of Longpass Filter


MaterialBK7
TransmittanceT>90%
Blocking DepthOD2-OD4
AOI0° or 45°
Surface   quality60/40
Clear aperture>90%



Part No.blocking   Range
   (nm)
Blocking DepthTransmission   Range
   (nm)
Transmittance   in
   pass band
LPF400200-375>OD2420-1200Tavg>85%
LPF425200-405>OD2445-1200Tavg>85%
LPF450200-430>OD2470-1200Tavg>85%
LPF475200-455>OD2495-1200Tavg>85%
LPF500200-480>OD2520-1200Tavg>85%
LPF525200-550>OD2545-1200Tavg>85%
LPF550200-530>OD2575-1200Tavg>85%
LPF575200-550>OD2600-1200Tavg>85%
LPF600200-570>OD2625-1200Tavg>85%
LPF625200-595>OD2650-1200Tavg>85%
LPF650200-620>OD2675-1200Tavg>85%
LPF675200-645>OD2700-1200Tavg>85%
LPF700200-670>OD2725-1200Tavg>85%
LPF725200-695>OD2750-1200Tavg>85%
LPF750200-720>OD2775-1200Tavg>85%
LPF775200-745>OD2800-1200Tavg>85%
LPF800400-770>OD2825-1200Tavg>85%
LPF825400-795>OD2850-1200Tavg>85%
LPF850400-820>OD2875-1200Tavg>85%
LPF875400-845>OD2900-1200Tavg>85%
LPF900400-870>OD2930-1200Tavg>85%
LPF925400-895>OD2955-1200Tavg>85%
LPF950400-910>OD2980-1200Tavg>85%
LPF975400-935>OD21010-1800Tavg>85%
LPF1000400-960>OD21040-1800Tavg>85%
LPF1025400-985>OD21070-1800Tavg>85%
LPF1050400-1010>OD21110-1800Tavg>85%
LPF1075400-1035>OD21130-1800Tavg>85%
LPF1100400-1060>OD21160-1800Tavg>85%


Contact Us
Interested in Optical Products?
Don’t hesitate to contact BRD Optical.
*
*
*
Optics Are Everywhere
Look For Areas Of Your Industry
Optical elements can be large astronomical survey mirrors or small optical communication elements.It could be in a spacecraft
exploring the universe, it could be in a probe going deep into the ocean, and of course, it's in our lives.
What Is New About BRD OPTICAL
Get Optical Resources You Want at BRD OPTICAL