In addition, our edgepass filters are hermetically sealed to provide maximum humidity protection, and they can be stacked to create a custom bandpass filter. This feature can be useful in applications where it is desirable to fine tune the location of the cut-on, or cut-off wavelength. As a rule of thumb, when the angle of incidence goes from 0° to 45°, the central wavlength shifts down by about 10%. Unlike colored filter glass, the cut-on and cut-off wavelength of these filters will shift to a shorter wavelength as the angle of incidence is increased. Their film construction is essentially a modified quarter-wave stack, using interference effects rather than absorption, to isolate their spectral bands (see the Specs tab for transmission information). These edgepass filters feature durable dielectric coatings that withstand the normal cleaning and handling necessary when using any high-quality optical component. Thorlabs' longpass and shortpass filters are very useful for isolating regions of a spectrum. Stray Light or Trim Filters to Eliminate any Unwanted Near-Band Radiation.1" Outer Diameter (Ø21.0 mm Clear Aperture).
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |