Optical Cast IR Longpass Filters

  • Lightweight Plastic
  • Excellent Thermal and Chemical Resistance

These plastic filters are ideal for blocking visible light, while passing near infrared wavelengths. New plastic technology has produced filters with properties that can satisfy a variety of optical and environmental needs, yet at half the weight of glass filters. Compared to similarly available transparent plastics, Thermoset ADC filters have the highest transmission and lowest haze, have at least 25-50 times greater abrasion resistance, and are resistant to all types of chemicals and solvents (acetone, acids, alkali and alcohols). In addition to having excellent thermal characteristics, they are resistant to pits from hot sparks resulting from welding or grinding processes. The filters can also be easily drilled with high-speed carbide bits for all types of mounting.

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Description Stock No. Price In Stock  
Showing 1-9 of 9 Items | Sort by Spec
Optical Cast Plastic IR Longpass Filter 1" Dia.
NT43-948 $6.00 In stock and ready to ship. Click to add this item to your cart.
Diameter (inches) 1
RoHS Exempt
Optical Cast Plastic IR Longpass Filter 1" x 1"
NT43-952 $5.50 In stock and ready to ship. Click to add this item to your cart.
Dimensions (inches) 1 x 1
RoHS Exempt
Optical Cast Plastic IR Longpass Filter 2" Dia.
NT43-949 $8.00 In stock and ready to ship. Click to add this item to your cart.
Diameter (inches) 2
RoHS Exempt
Optical Cast Plastic IR Longpass Filter 2" x 2"
NT43-953 $7.00 In stock and ready to ship. Click to add this item to your cart.
Dimensions (inches) 2 x 2
RoHS Exempt
Optical Cast Plastic IR Longpass Filter 3" Dia.
NT43-950 $12.00 In stock and ready to ship. Click to add this item to your cart.
Diameter (inches) 3
RoHS Exempt
Optical Cast Plastic IR Longpass Filter 4" x 5"
NT43-954 $15.50 In stock and ready to ship. Click to add this item to your cart.
Dimensions (inches) 4 x 5
RoHS Exempt
Optical Cast Plastic IR Longpass Filter 5.5" Dia.
NT43-951 $30.00 In stock and ready to ship. Click to add this item to your cart.
Diameter (inches) 5.5
RoHS Exempt
Optical Cast Plastic IR Longpass Filter 5" x 7"
NT46-620 $24.00 In stock and ready to ship. Click to add this item to your cart.
Dimensions (inches) 5 x 7
RoHS Exempt
Optical Cast Plastic IR Longpass Filter 8" x 10"
NT46-621 $64.50 Click to receive an email with delivery information. Click to add this item to your cart.
Dimensions (inches) 8 x 10
RoHS Exempt
 
Material Thermoset ADC (CR-39)
Dimensional Tolerance ±0.1mm
Thickness 1.5mm nominal
Transmission >90%, 1-2% peak at 500nm gives green color
Refractive Index 1.501 nd at 20°C
Abbé Number 57
Max. Operating Temperature 100°C (212°F) continuous, 130°C (266°F) one hour
Density 1.320gm/cm3 at 20°C (68°F)
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