Product description
The long-wave pass filter allows light whose wavelength is greater than the set wavelength to pass, and cuts off the light whose wavelength is less than the set wavelength. It has the advantages of wide cut-off bandwidth, deep cut-off depth, high conversion steepness, and high transmittance. Widely used in fluorescence excitation spectroscopy, Raman spectroscopy applications, spectral grouping applications, and astronomical observation applications, etc. It can also be used in imaging optical systems, machine vision system applications, to eliminate interference light outside the available bands, and greatly improve imaging clarity Degree, and the sensitivity of the system.
Optical index
Center wavelength: LP 800nm +/- 5nm
Transmission band: 775nm~1100nm
Cut-off band: 200nm~730nm
Material: Acrylic
Transmission wavefront error: λ/4 @ 800 nm
Parallel difference: <30 arc seconds
Surface finish: 40-20
Diameter tolerance: +0.0/-0.1mm
Thickness: 1.0mm ±0.05mm
Center wavelength tolerance: ±1%
Transmittance T: Tavg>90%
Cut-off zone depth: OD4
Cut-off band steepness: <1%
Effective aperture: >90%
Incident angle: 0°
Note: Our filters are all new, and each filter has a protective film on it.
Package
700nm 760nm 780nm 800nm 850nm 940nm -1100nm Long Band Pass Filter 1PC.