Surplus - IR Edge Filters
Surplus - IR Edge Filters
Surplus IR Edge Filters from Andover Corporation offer exceptional value on premium infrared long-wave pass and short-wave pass filters at reduced prices. These specialized components provide sharp cut-off transitions in the infrared spectrum, effectively isolating broad spectral regions while delivering high transmission of desired energy and deep rejection of unwanted radiation.
Constructed with hard, durable first-surface dielectric coatings on optical-quality IR-transmitting substrates such as germanium, silicon, and other infrared materials, these surplus filters maintain the same rigorous quality standards as our regular product line. They're ideal for researchers, educational institutions, and companies seeking cost-effective solutions for order sorting in FTIR spectroscopy, thermal imaging, and specialized infrared applications. Despite being offered at discounted prices, these filters provide excellent optical performance and durability, capable of withstanding normal cleaning and handling. Inventory changes regularly based on availability, so we recommend checking our listings frequently for the best selection.
Showing 51–69 of 69 results
- Wavelength: 6500 ±100
- Operating Temperature: 23
- Parallelism: Commercial
- Transmission: 80%
- Blocking: X-ray to 6300nm OD3 (avg)
- Size: 25.0 Ø +0.0 / -0.25
- Thickness: 1.0 ±0.2
- Scratch-Dig: 80/50
- Clear Aperture: 22mm Ø min
- Flatness: Commercial
- Substrate: Germanium
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Wavelength: 6500.0 ±75
- Operating Temperature: 23.0
- Parallelism: < 10 arc minutes
- Transmission: 85% cuton to 12500nm
- Blocking: >1x10-3 avg. X-Ray to cuton
- Size: 50.0 Ø +0 / -0.2
- Thickness: 1.0 ±0.2
- Scratch-Dig: 80/50
- Clear Aperture: 45mm Ø min
- Flatness: 5 or better at of Interest
- Substrate: Germainum
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Wavelength: 6600 ±100
- Operating Temperature: 23
- Parallelism: Commercial
- Transmission: 75% Ave
- Blocking: x-ray to 6400nm OD3 (avg)
- Size: 50.0 Ø +0 / -0.1
- Thickness: 2.0 ±0.2
- Scratch-Dig: 80/50
- Clear Aperture: 45mm Ø min
- Flatness: Commercial
- Substrate: Germanium
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Wavelength: 6950 ±200
- Operating Temperature: 23.0
- Parallelism: Commercial
- Transmission: 90%
- Blocking: 1x10-3 avg. X-Ray to 6700nm
- Size: 50.0 Ø +0 / -0.2
- Thickness: 1.0 ±0.2
- Scratch-Dig: 80/50
- Clear Aperture: 45mm Ø min
- Flatness: Commercial
- Substrate: Germanium
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Wavelength: 6950 ±200
- Operating Temperature: 23.0
- Parallelism: Commercial
- Transmission: 90% Ave
- Blocking: < 0.1% avg X-ray to 6700
- Size: 25.0 Ø +0 / -0.1
- Thickness: 1.0 ±0.2
- Scratch-Dig: 80/50
- Clear Aperture: 22mm Ø min
- Flatness: Commercial
- Substrate: Germanium
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Wavelength: 7650 ±60
- Operating Temperature: 23.0
- Parallelism: Commercial
- Transmission: 85%
- Blocking: 1x10-3 avg. X-Ray to 7500nm
- Size: 25.0 Ø +0 / -0.1
- Thickness: 1.0 ±0.2
- Scratch-Dig: 80/50
- Clear Aperture: 22mm Ø min
- Flatness: Commercial
- Substrate: Germainum
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Wavelength: 7650 ±60
- Operating Temperature: 23.0
- Parallelism: Commercial
- Transmission: 85% Ave
- Blocking: x-ray to 7500nm <OD3 (avg)
- Size: 50.0 Ø +0 / -0.2
- Thickness: 1.0 ±0.2
- Scratch-Dig: 80/50
- Clear Aperture: 45mm Ø min
- Flatness: Commercial
- Substrate: Germanium
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Wavelength: 7700.0 ±100
- Operating Temperature: 23.0
- Parallelism: < 10 arc minutes
- Transmission: 85% avg to 14500nm
- Blocking: 1x10-3 avg. X-Ray to cut-on
- Size: 50.0 Ø +0 / -0.1
- Thickness: 1.0 ±0.2
- Scratch-Dig: 80/50
- Clear Aperture: 45mm Ø min
- Flatness: 5 or better at of Interest
- Substrate: Germainum
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Wavelength: 7700.0 ±200
- Operating Temperature: 23.0
- Parallelism: < 10 arc minutes
- Transmission: 85%
- Blocking: 1x10-3 avg. 200nm to 7600nm
- Size: 25.0 Ø +0 / -0.2
- Thickness: 1.0 ±0.2
- Scratch-Dig: 80/50
- Clear Aperture: 22mm
- Flatness: 5 or better at of Interest
- Substrate: Germanium
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Wavelength: 7800 ±125
- Operating Temperature: 23
- Parallelism: Commercial
- Transmission: 85%
- Blocking: <0.1% avg X-ray to 7600nm
- Size: 25.0 +0 / -0.2
- Thickness: 1.0 ±0.2
- Scratch-Dig: 80/50
- Clear Aperture: 22mm Ø min
- Flatness: Commercial
- Substrate: Germanium
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Wavelength: 7800 ±125
- Operating Temperature: 23
- Parallelism: Commercial
- Transmission: 85%
- Blocking: <0.1% avg X-ray to 7600nm
- Size: 50.0 +0 / -0.2
- Thickness: 1.0 ±0.2
- Scratch-Dig: 80/50
- Clear Aperture: 45mm Ø min
- Flatness: Commercial
- Substrate: N/A
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Wavelength: 8000 ±200
- Operating Temperature: 23.0
- Parallelism: < 10 arc minutes
- Transmission: 85%
- Blocking: 1x10-3 avg. X-Ray to cuton
- Size: 50.0 Ø +0 / -0.1
- Thickness: 1.0 ±0.2
- Scratch-Dig: 80/50
- Clear Aperture: 45mm Ø min
- Flatness: 5 or better at of Interest
- Substrate: Germainum
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Wavelength: 8000 ±200
- Operating Temperature: 23.0
- Parallelism: < 10 arc minutes
- Transmission: 85%
- Blocking: 1x10-3 avg. X-Ray to cut-on
- Size: 25.0 Ø +0 / -0.1
- Thickness: 1.0 ±0.2
- Scratch-Dig: 80/50
- Clear Aperture: 21mm Ø min
- Flatness: 5 or better at of Interest
- Substrate: Germainum
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Wavelength: 8000.0 ±150
- Operating Temperature: 23.0
- Parallelism: < 10 arc minutes
- Transmission: 85% to 14300nm
- Blocking: 1x10-3 avg. UV to cuton
- Size: 50.0 Ø +0 / -0.2
- Thickness: 1.0 ±0.2
- Scratch-Dig: 80/50
- Clear Aperture: 45mm Ø min
- Flatness: 5 or better at of Interest
- Substrate: Germainum
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Wavelength: 8200 ±100
- Operating Temperature: 23.0
- Parallelism: Commercial
- Transmission: 85% Avg
- Blocking: 1x10-3 avg. X-Ray to 8000
- Size: 25.0 +0.00 / -0.2
- Thickness: 1.0 ±0.2
- Scratch-Dig: 80/50
- Clear Aperture: 22mm
- Flatness: Commercial
- Substrate: Germanium
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Wavelength: 8300 ±100
- Operating Temperature: 23.0
- Parallelism: Commercial
- Transmission: 80% Ave
- Blocking: 1x10-3 avg. X-Ray to 8000
- Size: 25.0 Ø +0 / -0.1
- Thickness: 1.0 ±0.2
- Scratch-Dig: 80/50
- Clear Aperture: 22mm Ø min
- Flatness: Commercial
- Substrate: N/A
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Wavelength: 8450 ±nom
- Operating Temperature: 23.0
- Parallelism: Commercial
- Transmission: 95%
- Blocking: < 0.1% ave. 7500nm to 8300nm
- Size: 25.0 +0.0 / -0.2
- Thickness: 0.4 ±0.1
- Scratch-Dig: 80/50
- Clear Aperture: 21.0
- Flatness: Commercial
- Substrate: Germanium
- Angle of Incidence: 0.0
- 5% Wavelength: N/A
- Wavelength: 9290 ±100
- Operating Temperature: 23.0
- Parallelism: < 10 arc minutes
- Transmission: 90%
- Blocking: 1x10-3 avg. cut-off to 13800nm
- Size: 25.0 Ø +0 / -0.2
- Thickness: 1.0 ±0.2
- Scratch-Dig: 80/50
- Clear Aperture: 22.0mm Ø min
- Flatness: 5 or better at WL of Interest
- Substrate: Germainum
- Angle of Incidence: 0
- 5% Wavelength: N/A
PART NO.
DESCRIPTION
1 - 5 pcs.
6 - 10 pcs.
> 10 pcs.
Stock Status
$262.00
$262.00
$262.00
In Stock: 12
$436.00
$436.00
$436.00
In Stock: 7
$327.00
$327.00
$327.00
In Stock: 5
$570.00
$570.00
$570.00
In Stock: 11
$271.00
$271.00
$271.00
In Stock: 17
$271.00
$271.00
$271.00
In Stock: 10
$346.00
$346.00
$346.00
In Stock: 6
$346.00
$346.00
$346.00
In Stock: 7
$525.00
$525.00
$525.00
In Stock: 7
$283.00
$283.00
$283.00
In Stock: 37
$346.00
$346.00
$346.00
In Stock: 13
$346.00
$346.00
$346.00
In Stock: 7
$274.00
$274.00
$274.00
In Stock: 28
$385.00
$385.00
$385.00
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$525.00
$525.00
In Stock: 19
$323.00
$323.00
$323.00
In Stock: 1
$650.00
$650.00
$650.00
In Stock: 1
$295.00
$295.00
$295.00
In Stock: 9