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.

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

BENEFITS

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

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

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)
DESCRIPTION
PART NO.
1 - 5 pcs.
> 5 pcs.
QTY In Stock
Buy
Long Pass Filters 1050nm/LWP/12.5mm dia.
1.05ILP-12.5
$104.00
$78.00
14
5% Wavelength1050.0+40/-40 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$104.00
> 5 pcs.$78.00

Estimated Delivery: 2-3 Days
Long Pass Filters 1050nm/LWP/25mm dia.
1.05ILP-25
$226.00
$170.00
21
5% Wavelength1050.0+40/-40 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$226.00
> 5 pcs.$170.00

Estimated Delivery: 2-3 Days
Long Pass Filters 1050nm/LWP/50mm dia.
1.05ILP-50
$364.00
$273.00
4
5% Wavelength1050.0+40/-40 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$364.00
> 5 pcs.$273.00

Estimated Delivery: 2-3 Days
Long Pass Filters 1650nm/LWP/12.5mm dia.
1.65ILP-12.5
$108.00
$81.00
3
5% Wavelength1650.0+70/-70 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$108.00
> 5 pcs.$81.00

Estimated Delivery: 2-3 Days
Long Pass Filters 1650nm/LWP/25mm dia.
1.65ILP-25
$247.00
$185.00
14
5% Wavelength1650.0+70/-70 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$247.00
> 5 pcs.$185.00

Estimated Delivery: 2-3 Days
Long Pass Filters 1650nm/LWP/50mm dia.
1.65ILP-50
$383.00
$287.00
3
5% Wavelength1650.0+70/-70 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$383.00
> 5 pcs.$287.00

Estimated Delivery: 2-3 Days
Long Pass Filters 2400nm/LWP/12.5mm dia.
2.40ILP-12.5
$119.00
$89.00
18
5% Wavelength2400.0+90/-90 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$119.00
> 5 pcs.$89.00

Estimated Delivery: 2-3 Days
Long Pass Filters 2400nm/LWP/25mm dia.
2.40ILP-25
$278.00
$209.00
23
5% Wavelength2400.0+90/-90 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$278.00
> 5 pcs.$209.00

Estimated Delivery: 2-3 Days
Long Pass Filters 2400nm/LWP/50mm dia.
2.40ILP-50
$427.00
$320.00
7
5% Wavelength2400.0+90/-90 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$427.00
> 5 pcs.$320.00

Estimated Delivery: 2-3 Days
Long Pass Filters 3600nm/LWP/12.5mm dia.
3.60ILP-12.5
$128.00
$96.00
37
5% Wavelength3600.0+140/-140 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$128.00
> 5 pcs.$96.00

Estimated Delivery: 2-3 Days
Long Pass Filters 3600nm/LWP/25mm dia.
3.60ILP-25
$292.00
$219.00
23
5% Wavelength3600.0+140/-140 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$292.00
> 5 pcs.$219.00

Estimated Delivery: 2-3 Days
Long Pass Filters 3600nm/LWP/50mm dia.
3.60ILP-50
$465.00
$349.00
7
5% Wavelength3600.0+140/-140 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$465.00
> 5 pcs.$349.00

Estimated Delivery: 2-3 Days
Long Pass Filters 4500nm/LWP/12.5mm dia.
4.50ILP-12.5
$139.00
$104.00
4
5% Wavelength4500.0+180/-180 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$139.00
> 5 pcs.$104.00

Estimated Delivery: 2-3 Days
Long Pass Filters 4500nm/LWP/25mm dia.
4.50ILP-25
$327.00
$245.00
34
5% Wavelength4500.0+180/-180 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$327.00
> 5 pcs.$245.00

Estimated Delivery: 2-3 Days
Long Pass Filters 4500nm/LWP/50mm dia.
4.50ILP-50
$507.00
$380.00
16
5% Wavelength4500.0+180/-180 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$507.00
> 5 pcs.$380.00

Estimated Delivery: 2-3 Days
Long Pass Filters 6000nm/LWP/12.5mm dia.
6.00ILP-12.5
$140.00
$105.00
13
5% Wavelength6000.0+240/-240 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$140.00
> 5 pcs.$105.00

Estimated Delivery: 2-3 Days
Long Pass Filters 6000nm/LWP/25mm dia.
6.00ILP-25
$350.00
$263.00
32
5% Wavelength6000.0+240/-240 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$350.00
> 5 pcs.$263.00

Estimated Delivery: 2-3 Days
Long Pass Filters 6000nm/LWP/50mm dia.
6.00ILP-50
$513.00
$385.00
9
5% Wavelength6000.0+240/-240 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$513.00
> 5 pcs.$385.00

Estimated Delivery: 2-3 Days
Long Pass Filters 7300nm/LWP/12.5mm dia.
7.30ILP-12.5
$142.00
$107.00
69
5% Wavelength7300.0+290/-290 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$142.00
> 5 pcs.$107.00

Estimated Delivery: 2-3 Days
Long Pass Filters 7300nm/LWP/25mm dia.
7.30ILP-25
$383.00
$287.00
7
5% Wavelength7300.0+290/-290 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$383.00
> 5 pcs.$287.00

Estimated Delivery: 2-3 Days
Long Pass Filters 7300nm/LWP/50mm dia.
7.30ILP-50
$522.00
$392.00
1
5% Wavelength7300.0+290/-290 nm
TypeLWP
Size+0/-0.2mm
Thickness1.0 +0.2/-0.2 mm
QuantityPrice
1 - 5 pcs.$522.00
> 5 pcs.$392.00

Estimated Delivery: 2-3 Days