Compare Model Drawings, CAD & Specs Availability Price
FR-KG3-C
Heat Absorbing Glass Filter, Coated, Ø12.7 mm, IR Cut-off, KG3
$55
In Stock
 FR-KG3-C Heat Absorbing Glass Filter, Coated, Ø12.7 mm, IR Cut-off, KG3
In Stock
 $55
FSR-KG1-C
Heat Absorbing Glass Filter, Coated, Ø25.4 mm, IR Cut-off, KG1
$62
In Stock
 FSR-KG1-C Heat Absorbing Glass Filter, Coated, Ø25.4 mm, IR Cut-off, KG1
In Stock
 $62
FSR-KG2-C
Heat Absorbing Glass Filter, Coated, Ø25.4 mm, IR Cut-off, KG2
$62
In Stock
 FSR-KG2-C Heat Absorbing Glass Filter, Coated, Ø25.4 mm, IR Cut-off, KG2
In Stock
 $62
heat absorbing glass filter model fsr-kg3
FSR-KG3-C
Heat Absorbing Glass Filter, Coated, Ø25.4 mm, IR Cut-off, KG3
$62
In Stock
 FSR-KG3-C Heat Absorbing Glass Filter, Coated, Ø25.4 mm, IR Cut-off, KG3
In Stock
 $62
heat absorbing glass filter model fsr-kg3
FSR-KG5-C
Heat Absorbing Glass Filter, Coated, Ø25.4 mm, IR Cut-off, KG5
$62
In Stock
 FSR-KG5-C Heat Absorbing Glass Filter, Coated, Ø25.4 mm, IR Cut-off, KG5
In Stock
 $62
FSQ-KG1-C
Heat Absorbing Glass Filter, Coated, 50.8x50.8 mm, IR Cut-off, KG1
$89
In Stock
 FSQ-KG1-C Heat Absorbing Glass Filter, Coated, 50.8x50.8 mm, IR Cut-off, KG1
In Stock
 $89
FSQ-KG2-C
Heat Absorbing Glass Filter, Coated, 50.8x50.8 mm, IR Cut-off, KG2
$89
In Stock
 FSQ-KG2-C Heat Absorbing Glass Filter, Coated, 50.8x50.8 mm, IR Cut-off, KG2
In Stock
 $89
FSQ-KG3-C
Heat Absorbing Glass Filter, Coated, 50.8x50.8 mm, IR Cut-off, KG3
$89
In Stock
 FSQ-KG3-C Heat Absorbing Glass Filter, Coated, 50.8x50.8 mm, IR Cut-off, KG3
In Stock
 $89
FSQ-KG5-C
Heat Absorbing Glass Filter, Coated, 50.8x50.8 mm, IR Cut-off, KG5
$89
In Stock
 FSQ-KG5-C Heat Absorbing Glass Filter, Coated, 50.8x50.8 mm, IR Cut-off, KG5
In Stock
 $89

Specifications

  • Type
    Heat Absorbing Shortpass Filter
  • Material
    Schott KG or equivalent
  • Coating Type
    SiO2
  • Angle of Incidence
    0°
  • Size Tolerance
    ±0.3 mm
  • Thickness
    3 mm
  • Thickness Tolerance
    ±0.1 mm
  • Surface Quality
    60-40 scratch-dig
  • Wedge
    ≤3 arc min
  • Clear Aperture
    central ≥ 80% of size
  • Chamfers
    Up to 1 mm face width
  • Chamfers Angle Tolerance
    45° ±15°

Features

Coated Heat Absorbing Shortpass Filters

The Colored Glass Heat Absorbing Shortpass Filters are used to protect components that are sensitive to heat generated by high intensity illumination system. They are made of heat absorbing glass that provides excellent absorption of infrared radiation and transmits visible wavelength region. These coated filters have a lower per surface reflectivity resulting in ~3% increase in transmission compared to the uncoated filters.

Coated for Better Humidity Resistance

Select color filters are made from hygroscopic material which, when exposed to a humid environment, will start to discolor. Our new colored glass filters are coated with SiO2 film that protects the hygroscopic material from humidity and prevents staining. Humidity tests were conducted per MIL-C-48497 specifications. The film layer proved intact and optical performance of the filter remained the same after the test.

Optical Filter Mounts