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Infrared (IR) Longpass Filters

Infrared (IR) Longpass Filters
  • Ideal for Isolating Broad Spectral Regions
  • Durable, First-Surface Coatings

Longpass filters provide a sharp cut-off below a particular wavelength. Often used for order sorting, they isolate broad regions of the spectrum, simultaneously providing high transmission of desired energy, and deep rejection of unwanted energy. Constructed of hard, durable first-surface dielectric coatings on optical-quality IR-transmitting substrates, these Infrared (IR) Longpass Filters will withstand normal cleaning and handling associated with any high-quality optical component. These filters are particularly useful for FTIR spectroscopy and Thermal Imaging Applications. For custom sizes and coating requirements, please contact our Sales Department.


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Description Stock No. Price In Stock Qty
Showing 1-12 of 12 Items |  Sort by Spec
1.05μm Infrared Longpass Filter, 25.0mm Diameter
#68-651 In Stock and Ready to Ship.
1.65μm Infrared Longpass Filter, 25.0mm Diameter
#68-652 In Stock and Ready to Ship.
2.40μm Infrared Longpass Filter, 25.0mm Diameter
#68-653 In Stock and Ready to Ship.
3.60μm Infrared Longpass Filter, 25.0mm Diameter
#68-654 In Stock and Ready to Ship.
4.50μm Infrared Longpass Filter, 25.0mm Diameter
#68-655 In Stock and Ready to Ship.
7.30μm Infrared Longpass Filter, 25.0mm Diameter
#68-656 In Stock and Ready to Ship.
1.05μm Infrared Longpass Filter, 50.0mm Diameter
#68-657 In Stock and Ready to Ship.
1.65μm Infrared Longpass Filter, 50.0mm Diameter
#68-658 Out of Stock. Click to Receive an Email with Delivery Details.
2.40μm Infrared Longpass Filter, 50.0mm Diameter
#68-659 In Stock and Ready to Ship.
3.60μm Infrared Longpass Filter, 50.0mm Diameter
#68-660 Out of Stock. Click to Receive an Email with Delivery Details.
4.50μm Infrared Longpass Filter, 50.0mm Diameter
#68-661 In Stock and Ready to Ship.
7.30μm Infrared Longpass Filter, 50.0mm Diameter
#68-662 In Stock and Ready to Ship.
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