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ISO 9001 - AS 9100 - ITAR Standard & Custom Optical Filters and Coatings
Toll Free (US): +1 (888) 893-9992 International: +01 (603) 893-6888
Typical IR Long Pass Filter

STANDARD IR LONG PASS FILTERS

Long wave pass filters are 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 filters will withstand normal cleaning and handling associated with any high-quality optical component. 

For your convenience and economy, we offer the filters in three standard sizes: 12.5mm, 25mm and 50mm dia. However, we can produce custom sizes and shapes, as well as custom optical characteristics. Contact our technical sales department for a quotation.

*HIGH VOLUME* - This product lends itself to being produced in large quantities at competitive pricing. Email info@andcorp.com or fill out a contact form for details.

We also offer long pass filter in the UV and visible wavelength ranges, including steep-edge long pass filters.

Can't find what you're looking for? Feel free to contact us. Also, check our surplus listings for more options.

 

IR Longpass Filter Benefits

  • Useful for isolating broad spectral regions
  • Constructed of hard, durable first-surface coatings
  • Available in standard and custom wavelengths
IR Longpass Filter Common Applications
  • Order sorting
  • FTIR spectroscopy
  • Thermal imaging

General Specifications:

Thickness:  1.0±0.2mm
Diameter Tolerance: +0/-0.1mm
Min. Clear Aperture:  90% of outside dimension
Substrate Material:  Silicon or Germanium
Flatness:  <5 waves at cut-on W/L
24-hour humidity: per MIL-C-48497A
Operating Temperature: -62°C to +71°C
Parallelism: <10 arc minutes
Transmission (Ave): >85% from 1.05 x cut-on to 2.0 x cut-on
Rejection (Ave): <0.1%
Slope: <7% (12% for 1.05µm filter)
PART NO.
DESCRIPTION
1 - 5 pcs.
6 - 10 pcs.
> 10 pcs.
Stock Status
Buy
Available Items
1.05ILP-12.5
Long Pass Filters 1050nm/LWP/12.5mm dia.
$151.00
$127.00
$107.00
In Stock
Qty To Buy:
5% Wavelength1050.0+40/-40 nm
TypeLWP
Size12.5 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 1050nm
Special_Specifications1050nm 5% cut on Transmission Wavelength 1100nm - 2100nm Slope better than 12%
Scratch-Dig80/50
Clear Aperture11mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$151.00
6 - 10 pcs.$127.00
> 10 pcs.$107.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
1.05ILP-25
Long Pass Filters 1050nm/LWP/25mm dia.
$330.00
$277.00
$234.00
In Stock
Qty To Buy:
5% Wavelength1050.0+40/-40 nm
TypeLWP
Size25.0 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 1050nm
Special_Specifications1050nm 5% cut on Transmission Wavelength 1100nm - 2100nm Slope better than 12%
Scratch-Dig80/50
Clear Aperture22.0mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$330.00
6 - 10 pcs.$277.00
> 10 pcs.$234.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
1.05ILP-50
Long Pass Filters 1050nm/LWP/50mm dia.
$531.00
$446.00
$377.00
In Stock
Qty To Buy:
5% Wavelength1050.0+40/-40 nm
TypeLWP
Size50.0 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 1050nm
Special_Specifications1050nm 5% cut on Transmission Wavelength 1100nm - 2100nm Slope better than 12%
Scratch-Dig80/50
Clear Aperture45mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$531.00
6 - 10 pcs.$446.00
> 10 pcs.$377.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
1.65ILP-12.5
Long Pass Filters 1650nm/LWP/12.5mm dia.
$159.00
$134.00
$113.00
In Stock
Qty To Buy:
5% Wavelength1650.0+70/-70 nm
TypeLWP
Size12.5 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 1650nm
Special_Specifications1650nm 5 % cut on Transmission Wavelength 1730nm - 3300nm Slope better than 8%
Scratch-Dig80/50
Clear Aperture11mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$159.00
6 - 10 pcs.$134.00
> 10 pcs.$113.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
1.65ILP-25
Long Pass Filters 1650nm/LWP/25mm dia.
$362.00
$304.00
$257.00
In Stock
Qty To Buy:
5% Wavelength1650.0+70/-70 nm
TypeLWP
Size25.0 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 1650nm
Special_Specifications1650nm 5 % cut on Transmission Wavelength 1730nm - 3300nm Slope better than 8%
Scratch-Dig80/50
Clear Aperture22.0mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$362.00
6 - 10 pcs.$304.00
> 10 pcs.$257.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
1.65ILP-50
Long Pass Filters 1650nm/LWP/50mm dia.
$559.00
$470.00
$397.00
In Stock
Qty To Buy:
5% Wavelength1650.0+70/-70 nm
TypeLWP
Size50.0 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 1650nm
Special_Specifications1650nm 5 % cut on Transmission Wavelength 1730nm - 3300nm Slope better than 8%
Scratch-Dig80/50
Clear Aperture45mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$559.00
6 - 10 pcs.$470.00
> 10 pcs.$397.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
2.40ILP-12.5
Long Pass Filters 2400nm/LWP/12.5mm dia.
$174.00
$146.00
$124.00
In Stock
Qty To Buy:
5% Wavelength2400.0+90/-90 nm
TypeLWP
Size12.5 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 2400nm
Special_Specifications2400nm 5% cut on Transmission Wavelength 2520nm - 4800nm Slope better than 7%
Scratch-Dig80/50
Clear Aperture11mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$174.00
6 - 10 pcs.$146.00
> 10 pcs.$124.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
2.40ILP-25
Long Pass Filters 2400nm/LWP/25mm dia.
$393.00
$330.00
$279.00
In Stock
Qty To Buy:
5% Wavelength2400.0+90/-90 nm
TypeLWP
Size25.0 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 2400nm
Special_Specifications2400nm 5% cut on Transmission Wavelength 2520nm - 4800nm Slope better than 7%
Scratch-Dig80/50
Clear Aperture21mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$393.00
6 - 10 pcs.$330.00
> 10 pcs.$279.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
2.40ILP-50
Long Pass Filters 2400nm/LWP/50mm dia.
$624.00
$524.00
$443.00
In Stock
Qty To Buy:
5% Wavelength2400.0+90/-90 nm
TypeLWP
Size50.0 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 2400nm
Special_Specifications2400nm 5% cut on Transmission Wavelength 2520nm - 4800nm Slope better than 7%
Scratch-Dig80/50
Clear Aperture45mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$624.00
6 - 10 pcs.$524.00
> 10 pcs.$443.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
3.60ILP-12.5
Long Pass Filters 3600nm/LWP/12.5mm dia.
$186.00
$156.00
$132.00
In Stock
Qty To Buy:
5% Wavelength3600.0+140/-140 nm
TypeLWP
Size12.5 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 3600nm
Special_Specifications3600nm 5 % cut on Transmission Wavelength 3780nm - 7200nm Slope better than 7%
Scratch-Dig80/50
Clear Aperture11mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$186.00
6 - 10 pcs.$156.00
> 10 pcs.$132.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
3.60ILP-25
Long Pass Filters 3600nm/LWP/25mm dia.
$408.00
$343.00
$290.00
In Stock
Qty To Buy:
5% Wavelength3600.0+140/-140 nm
TypeLWP
Size25.0 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 3600nm
Special_Specifications3600nm 5 % cut on Transmission Wavelength 3780nm - 7200nm Slope better than 7%
Scratch-Dig80/50
Clear Aperture21mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$408.00
6 - 10 pcs.$343.00
> 10 pcs.$290.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
3.60ILP-50
Long Pass Filters 3600nm/LWP/50mm dia.
$679.00
$570.00
$482.00
In Stock
Qty To Buy:
5% Wavelength3600.0+140/-140 nm
TypeLWP
Size50.0 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 3600nm
Special_Specifications3600nm 5 % cut on Transmission Wavelength 3780nm - 7200nm Slope better than 7%
Scratch-Dig80/50
Clear Aperture45mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$679.00
6 - 10 pcs.$570.00
> 10 pcs.$482.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
4.50ILP-12.5
Long Pass Filters 4500nm/LWP/12.5mm dia.
$204.00
$171.00
$145.00
In Stock
Qty To Buy:
5% Wavelength4500.0+180/-180 nm
TypeLWP
Size12.5 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 4500nm
Special_Specifications4500nm 5% cut on Transmission Wavelength 4730nm - 9000nm Slope better than 7%
Scratch-Dig80/50
Clear Aperture11mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$204.00
6 - 10 pcs.$171.00
> 10 pcs.$145.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
4.50ILP-25
Long Pass Filters 4500nm/LWP/25mm dia.
$451.00
$379.00
$320.00
In Stock
Qty To Buy:
5% Wavelength4500.0+180/-180 nm
TypeLWP
Size25.0 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 4500nm
Special_Specifications4500nm 5% cut on Transmission Wavelength 4730nm - 9000nm Slope better than 7%
Scratch-Dig80/50
Clear Aperture21mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$451.00
6 - 10 pcs.$379.00
> 10 pcs.$320.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
4.50ILP-50
Long Pass Filters 4500nm/LWP/50mm dia.
$742.00
$623.00
$527.00
In Stock
Qty To Buy:
5% Wavelength4500.0+180/-180 nm
TypeLWP
Size50.0 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 4500nm
Special_Specifications4500nm 5% cut on Transmission Wavelength 4730nm - 9000nm Slope better than 7%
Scratch-Dig80/50
Clear Aperture45mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$742.00
6 - 10 pcs.$623.00
> 10 pcs.$527.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
6.00ILP-12.5
Long Pass Filters 6000nm/LWP/12.5mm dia.
$205.00
$172.00
$146.00
In Stock
Qty To Buy:
5% Wavelength6000.0+240/-240 nm
TypeLWP
Size12.5 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 6000nm
Special_Specifications6000nm 5% cut on Transmission Wavelength 6300nm - 12000nm Slope better than 7%
Scratch-Dig80/50
Clear Aperture11mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$205.00
6 - 10 pcs.$172.00
> 10 pcs.$146.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
6.00ILP-25
Long Pass Filters 6000nm/LWP/25mm dia.
$512.00
$430.00
$364.00
In Stock
Qty To Buy:
5% Wavelength6000.0+240/-240 nm
TypeLWP
Size25.0 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 6000nm
Special_Specifications6000nm 5% cut on Transmission Wavelength 6300nm - 12000nm Slope better than 7%
Scratch-Dig80/50
Clear Aperture22.0mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$512.00
6 - 10 pcs.$430.00
> 10 pcs.$364.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
6.00ILP-50
Long Pass Filters 6000nm/LWP/50mm dia.
$750.00
$630.00
$533.00
In Stock
Qty To Buy:
5% Wavelength6000.0+240/-240 nm
TypeLWP
Size50.0 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 6000nm
Special_Specifications6000nm 5% cut on Transmission Wavelength 6300nm - 12000nm Slope better than 7%
Scratch-Dig80/50
Clear Aperture45mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$750.00
6 - 10 pcs.$630.00
> 10 pcs.$533.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
7.30ILP-12.5
Long Pass Filters 7300nm/LWP/12.5mm dia.
$207.00
$174.00
$147.00
In Stock
Qty To Buy:
5% Wavelength7300.0+290/-290 nm
TypeLWP
Size12.5 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 7300nm
Special_Specifications7300nm 5% cut on Transmission Wavelength 7670nm - 14000nm Slope better than 7%
Scratch-Dig80/50
Clear Aperture11mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$207.00
6 - 10 pcs.$174.00
> 10 pcs.$147.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
7.30ILP-25
Long Pass Filters 7300nm/LWP/25mm dia.
$530.00
$445.00
$376.00
In Stock
Qty To Buy:
5% Wavelength7300.0+290/-290 nm
TypeLWP
Size25.0 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 7300nm
Special_Specifications7300nm 5% cut on Transmission Wavelength 7670nm - 14000nm Slope better than 7%
Scratch-Dig80/50
Clear Aperture45mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$530.00
6 - 10 pcs.$445.00
> 10 pcs.$376.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days
7.30ILP-50
Long Pass Filters 7300nm/LWP/50mm dia.
$763.00
$641.00
$542.00
In Stock
Qty To Buy:
5% Wavelength7300.0+290/-290 nm
TypeLWP
Size50.0 +0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
Transmission85%
Blocking1x10-3 avg. 200nm to 7300nm
Special_Specifications7300nm 5% cut on Transmission Wavelength 7670nm - 14000nm Slope better than 7%
Scratch-Dig80/50
Clear Aperture45mm
Flatness5 or better at of Interest
Quantity DiscountsPrice
1 - 5 pcs.$763.00
6 - 10 pcs.$641.00
> 10 pcs.$542.00
Note: Contact us at sales@andovercorp.com for large quantity discounts.

Estimated Delivery: 2-3 Days