Compare Model Drawings, CAD & Specs Availability Price
Optical Filter, Shortpass, 25.4 mm, 450 nm Cut-off, 415-440 nm Transmission
$135
In Stock
In Stock
1 inch (25.4 mm) dielectric coated shortpass filter
Optical Filter, Shortpass, 25.4 mm, 500 nm Cut-off, 415-490 nm Transmission
$135
In Stock
In Stock
Optical Filter, Shortpass, 25.4 mm, 550 nm Cut-off, 415-540 nm Transmission
$135
5 Weeks
5 Weeks
1 inch (25.4 mm) dielectric coated shortpass filter
Optical Filter, Shortpass, 25.4 mm, 600 nm Cut-off, 415-590 nm Trans.
$135
In Stock
In Stock
1 inch (25.4 mm) dielectric coated shortpass filter
Optical Filter, Shortpass, 25.4 mm, 650 nm Cut-off, 415-640 nm Transmission
$135
In Stock
In Stock
Optical Filter, Shortpass, 25.4 mm, 700 nm Cut-off, 440-685 nm Transmission
$135
7 Weeks
7 Weeks
Optical Filter, Shortpass, 25.4 mm, 750 nm Cut-off, 475-735 nm Transmission
$135
In Stock
In Stock
Optical Filter, Shortpass, 25.4 mm, 800 nm Cut-off, 475-785 nm Transmission
$135
In Stock
In Stock
Optical Filter, Shortpass, 25.4 mm, 850 nm Cut-off, 475-835 nm Transmission
$135
In Stock
In Stock
Optical Filter, Shortpass, 25.4 mm, 900 nm Cut-off, 475-880 nm Transmission
$135
In Stock
In Stock
Optical Filter, Shortpass, 25.4 mm, 950 nm Cut-off, 475-930 nm Transmission
$135
In Stock
In Stock
Optical Filter, Shortpass, 25.4 mm, 1000 nm Cut-off, 475-980 nm Transmission
$135
In Stock
In Stock

Specifications

  • Type
    Standard Shortpass Filter
  • Diameter
    25.4 mm
  • Angle of Incidence
  • Transmission
    ≥65%
  • Surface Quality
    80-50 scratch-dig
  • Size Tolerance
    +0/-0.5 mm
  • Temperature Range
    -50 to 100°C
  • Wavelength Shift with Temperature
    0.02 nm/°C
  • Humidity Resistance
    Per MIL-STD-810E, Method 507.3, Procedure III Modified to 7 cycles

Features

Superior Isolation Between Stopband and Passband

Our shortpass filters feature both high transmission within the passband, and high rejection within the stop band, as well as a rapid transition, resulting in superior spectral isolation of a desired wavelength range. Out-of-band rejection for our shortpass filters is OD≥3.  The stopband spans from the edge wavelength to 1200 nm. Typical transmission is ≥65% for shortpass filters.

Angular Sensitivity and Fine Wavelength Tuning

Unlike colored glass filters, the filter edge wavelength for thin film filters will shift to shorter wavelengths with increased AOI. This can be useful for tilt tuning these shortpass filters to your exact wavelength. The shift may be calculated by: λθ = λo [1-(no/ne)2 sin2θ]1/2 where λθ is the wavelength at the new angle of incidence; λo is the center wavelength; no is the index of refraction of the environment (no = 1 in air); ne is the effective index of refraction of the filter; and θ is the angle of incidence. This property can be beneficial as the filters may be intentionally tilted to either stop or allow transmission of light from lasers or light sources near the edge wavelength. Our visible and IR filters have a particularly high ne, allowing more precise wavelength tuning.

Multiple Edge Wavelengths Available

Shortpass filters are available in a wide range of edge wavelengths, ranging from 385 to 1085 nm. A custom bandpass filter with excellent performance can be constructed using a combination of a shortpass and a longpass filter. These filters are available individually and in sets. The shortpass filter set consists of one shortpass filter for each available edge wavelength. They are shipped in a hardwood box for convenient storage and protection.

Optical Filter Mounts