PRODUCT

PRODUCT

Optics

Long Pass Filter

Long wave pass filters are specially designed to transmit longer wavelengths while blocking shorter wavelengths using light absorption and reflection.

Long pass filters are useful in a variety of applications ranging from clinical chemistry analyzers to grain harvest process control and can be used with shortpass filters for custom bandpass filtering.

Product Specifications

  • High rejection stop band
  • High transmission pass band
  • Excellent temperature stability
  • Cut-off wavelengths from 400 to 1000 nm
  • Blocked to X-ray

EX) 400nm Cut-on Long Pass Filter Specification

  • Cut-on Wavelength : 400nm
  • Cut-on Wavelength Tolerance : ± 5 nm
  • Transmittance Range : 410nm - 1200 nm
  • Transmission : ≥80%
  • Effective Index of Refraction : 1.7
  • Temperature Range : -50 to 100°C
  • Wavelength Shift with Temperature : 0.025 nm/°C

Short Pass Filter

Shortpass filters have a region of rejection on the long-wavelength side of the cut-off wavelength.
These filters are defined by a cut-off slope establishing the transition between a region of high rejection and a region of high transmission that is provided by thin-film coatings or absorptive colored glass.
Shortpass filter can be used with longpass filters for custom bandpass filtering.

Product Specifications

  • Steep cut-off transition slope
  • High rejection stop band
  • ≥65% transmission shortpass band
  • Cut-off wavelengths from 400nm-1000 nm
  • Blocked to 1200 nm

EX) 500nm Short Pass Filter Specification

  • Cut-off Wavelength : 500nm
  • Cut-off Wavelength Tolerance : ± 5 nm
  • Transmittance Range : 415 - 490 nm
  • Transmission : ≥65%
  • Effective Index of Refraction : 1.7
  • Temperature Range : -50 to 100°C
  • Wavelength Shift with Temperature : 0.025 nm/°C