Optical Cast Infrared (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 $6.00Click for special volume pricing Click to receive an email with delivery information. Click to add this item to your cart.
Diameter (inches) 1
Dimensional Tolerance (mm) ±0.10
Thickness (mm) 1.5 nominal
Index of Refraction nd 1.501 @ 20°C
Abbe Number (vd) 57
Transmission (%) >90
Density (g/cm3) 1.320 at 20°C
Substrate Thermoset ADC (CR-39)
Operating Temperature (°C) 100 Continuous, 130 One Hour Max
RoHS Exempt
Optical Cast Plastic IR Longpass Filter 1" x 1"
NT43-952 $5.50Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Dimensions (inches) 1 x 1
Dimensional Tolerance (mm) ±0.10
Thickness (mm) 1.5 nominal
Index of Refraction nd 1.501 @ 20°C
Abbe Number (vd) 57
Transmission (%) >90
Density (g/cm3) 1.320 at 20°C
Substrate Thermoset ADC (CR-39)
Operating Temperature (°C) 100 Continuous, 130 One Hour Max
RoHS Exempt
Optical Cast Plastic IR Longpass Filter 2" Dia.
NT43-949 $8.00Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Diameter (inches) 2
Dimensional Tolerance (mm) ±0.10
Thickness (mm) 1.5 nominal
Index of Refraction nd 1.501 @ 20°C
Abbe Number (vd) 57
Transmission (%) >90
Density (g/cm3) 1.320 at 20°C
Substrate Thermoset ADC (CR-39)
Operating Temperature (°C) 100 Continuous, 130 One Hour Max
RoHS Exempt
Optical Cast Plastic IR Longpass Filter 2" x 2"
NT43-953 $7.00Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Dimensions (inches) 2 x 2
Dimensional Tolerance (mm) ±0.10
Thickness (mm) 1.5 nominal
Index of Refraction nd 1.501 @ 20°C
Abbe Number (vd) 57
Transmission (%) >90
Density (g/cm3) 1.320 at 20°C
Substrate Thermoset ADC (CR-39)
Operating Temperature (°C) 100 Continuous, 130 One Hour Max
RoHS Exempt
Optical Cast Plastic IR Longpass Filter 3" Dia.
NT43-950 $12.00Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Diameter (inches) 3
Dimensional Tolerance (mm) ±0.10
Thickness (mm) 1.5 nominal
Index of Refraction nd 1.501 @ 20°C
Abbe Number (vd) 57
Transmission (%) >90
Density (g/cm3) 1.320 at 20°C
Substrate Thermoset ADC (CR-39)
Operating Temperature (°C) 100 Continuous, 130 One Hour Max
RoHS Exempt
Optical Cast Plastic IR Longpass Filter 4" x 5"
NT43-954 $15.50Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Dimensions (inches) 4 x 5
Dimensional Tolerance (mm) ±0.10
Thickness (mm) 1.5 nominal
Index of Refraction nd 1.501 @ 20°C
Abbe Number (vd) 57
Transmission (%) >90
Density (g/cm3) 1.320 at 20°C
Substrate Thermoset ADC (CR-39)
Operating Temperature (°C) 100 Continuous, 130 One Hour Max
RoHS Exempt
Optical Cast Plastic IR Longpass Filter 5.5" Dia.
NT43-951 $30.00Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Diameter (inches) 5.5
Dimensional Tolerance (mm) ±0.10
Thickness (mm) 1.5 nominal
Index of Refraction nd 1.501 @ 20°C
Abbe Number (vd) 57
Transmission (%) >90
Density (g/cm3) 1.320 at 20°C
Substrate Thermoset ADC (CR-39)
Operating Temperature (°C) 100 Continuous, 130 One Hour Max
RoHS Exempt
Optical Cast Plastic IR Longpass Filter 5" x 7"
NT46-620 $24.00Click for special volume pricing Click to receive an email with delivery information. Click to add this item to your cart.
Dimensions (inches) 5 x 7
Dimensional Tolerance (mm) ±0.10
Thickness (mm) 1.5 nominal
Index of Refraction nd 1.501 @ 20°C
Abbe Number (vd) 57
Transmission (%) >90
Density (g/cm3) 1.320 at 20°C
Substrate Thermoset ADC (CR-39)
Operating Temperature (°C) 100 Continuous, 130 One Hour Max
RoHS Exempt
Optical Cast Plastic IR Longpass Filter 8" x 10"
NT46-621 $64.50Click for special volume pricing Click to receive an email with delivery information. Click to add this item to your cart.
Dimensions (inches) 8 x 10
Dimensional Tolerance (mm) ±0.10
Thickness (mm) 1.5 nominal
Index of Refraction nd 1.501 @ 20°C
Abbe Number (vd) 57
Transmission (%) >90
Density (g/cm3) 1.320 at 20°C
Substrate Thermoset ADC (CR-39)
Operating Temperature (°C) 100 Continuous, 130 One Hour Max
RoHS Exempt
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