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 1–16 of 67 results
- Center Wavelength: 12300 + 200/ - 200
- Operating Temperature: N/A
- Parallelism: Commercial
- Transmission: 80% cuton to 15000nm
- Blocking: >1x10-3 avg. 7000nm to cut-on
- Blocking Range: N/A
- Size: 25.0 Ø
- Thickness: 1.0
- Scratch-Dig: 80/50
- Clear Aperture: 22mm Ø min
- Flatness: Commercial
- Substrate Material: Germanium
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Type: N/A
- Center Wavelength: 1050 + 40/ - 40
- Operating Temperature: N/A
- Parallelism: 10 arc minutes or better
- Transmission: 90%
- Blocking: 1x10-3 avg. X-Ray to 1000nm
- Blocking Range: N/A
- Size: 7.0 Ø
- Thickness: 1.0
- Scratch-Dig: 60/40
- Clear Aperture: 6.3mm
- Flatness: Commercial
- Substrate Material: Silicon
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Type: N/A
- Center Wavelength: 1450 + 20/ - 20
- Operating Temperature: N/A
- Parallelism: Commercial
- Transmission: 85%
- Blocking: 1x10-2 X-Ray to 1300nm
- Blocking Range: N/A
- Size: 50.0 Ø
- Thickness: 1.0
- Scratch-Dig: 80/50
- Clear Aperture: 90%
- Flatness: Commercial
- Substrate Material: Silicon
- Angle of Incidence: 0.0
- 5% Wavelength: N/A
- Type: N/A
- Center Wavelength: 1450 + nom/ - nom
- Operating Temperature: N/A
- Parallelism: Commercial
- Transmission: 80% to 2000nm
- Blocking: 1x10-3 avg. UV to cuton
- Blocking Range: N/A
- Size: 0.295
- Thickness: 0.020
- Scratch-Dig: 80/50
- Clear Aperture: 0.260” min.
- Flatness: Commercial
- Substrate Material: BK-7
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Type: N/A
- Center Wavelength: 1850 + 50/ - 50
- Operating Temperature: N/A
- Parallelism: Commercial
- Transmission: 85% to 5000nm
- Blocking: OD3 < 1800nm
- Blocking Range: N/A
- Size: 0.374 Ø
- Thickness: 0.039
- Scratch-Dig: 80/50
- Clear Aperture: 0.315” Ø min
- Flatness: Commercial
- Substrate Material: Silicon
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Type: N/A
- Center Wavelength: 2150 + 50.0/ - 50.0
- Operating Temperature: N/A
- Parallelism: 3 - 5 arc minutes or better
- Transmission: 85% to 4000nm
- Blocking: 0.1% avg. UV to 1950nm
- Blocking Range: N/A
- Size: 12.5 Ø
- Thickness: 1.0
- Scratch-Dig: 80/50
- Clear Aperture: 9.0
- Flatness: 3-5 per inch or better
- Substrate Material: Silicon
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Type: N/A
- Center Wavelength: 2290 + 30/ - 40
- Operating Temperature: N/A
- Parallelism: Commercial
- Transmission: 90%
- Blocking: 1x10-3 avg. X-Ray to 2200nm
- Blocking Range: N/A
- Size: 25.0 Ø
- Thickness: 1.0
- Scratch-Dig: 100/50
- Clear Aperture: 21mm Ø min
- Flatness: Commercial
- Substrate Material: Germanium
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Type: N/A
- Center Wavelength: 2290 + 50/ - 50
- Operating Temperature: N/A
- Parallelism: Commercial
- Transmission: 90%
- Blocking: 1x10-3 avg. X-Ray to 2200nm
- Blocking Range: N/A
- Size: 25.0 Ø
- Thickness: 1.0
- Scratch-Dig: 80/50
- Clear Aperture: 22mm Ø min
- Flatness: Commercial
- Substrate Material: Germanium
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Type: N/A
- Center Wavelength: 2290 + 30/ - 40
- Operating Temperature: N/A
- Parallelism: Commercial
- Transmission: 90%
- Blocking: 1x10-3 avg. X-Ray to 2200nm
- Blocking Range: N/A
- Size: 50.0 Ø
- Thickness: 1.0
- Scratch-Dig: 80/50
- Clear Aperture: 45mm Ø min
- Flatness: Commercial
- Substrate Material: Germanium
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Type: N/A
- Center Wavelength: 2300 + 15/ - 15
- Operating Temperature: N/A
- Parallelism: < 10 arc minutes
- Transmission: 85%
- Blocking: N/A
- Blocking Range: N/A
- Size: 25.0 Ø
- Thickness: 1.0
- Scratch-Dig: 80/50
- Clear Aperture: 21mm Ø min
- Flatness: 5λ or better at λ of Interest
- Substrate Material: Germainum
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Type: N/A
- Center Wavelength: 2530 + 30/ - 30
- Operating Temperature: N/A
- Parallelism: < 10 arc minutes
- Transmission: 85% cuton to 7000nm
- Blocking: 1x10-3 avg. X-Ray to cuton
- Blocking Range: N/A
- Size: 12.5 Ø
- Thickness: 1.0
- Scratch-Dig: 80/50
- Clear Aperture: 11mm Ø min
- Flatness: 5λ or better at λ of Interest
- Substrate Material: Germainum
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Type: N/A
- Center Wavelength: 2530 + 30/ - 30
- Operating Temperature: N/A
- Parallelism: < 10 arc minutes
- Transmission: 85% cuton to 7000nm
- Blocking: 1x10-3 avg. X-Ray to cuton
- Blocking Range: N/A
- Size: 50.0 Ø
- Thickness: 1.0
- Scratch-Dig: 80/50
- Clear Aperture: 45mm Ø min
- Flatness: 5λ or better at λ of Interest
- Substrate Material: Germainum
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Type: N/A
- Center Wavelength: 3000 + 300/ - 300
- Operating Temperature: N/A
- Parallelism: Commercial
- Transmission: 80% 2000nm
- Blocking: 1x10-3 avg. 3300nm to 5000nm
- Blocking Range: N/A
- Size: 0.375
- Thickness: 0.040
- Scratch-Dig: 80/50
- Clear Aperture: 90%
- Flatness: Commercial
- Substrate Material: Germanium
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Type: N/A
- Center Wavelength: 3000 + 300/ - 300
- Operating Temperature: N/A
- Parallelism: Commercial
- Transmission: 80% 2000nm
- Blocking: 1x10-3 avg. 3300nm to 5000nm
- Blocking Range: N/A
- Size: 0.984
- Thickness: 0.040
- Scratch-Dig: 80/50
- Clear Aperture: 90%
- Flatness: Commercial
- Substrate Material: Germanium
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Type: N/A
- Center Wavelength: 3075 + 50/ - 50
- Operating Temperature: N/A
- Parallelism: Commercial
- Transmission: 90% to 9500nm
- Blocking: 1x10-3 avg. X-Ray to 5% cut on
- Blocking Range: N/A
- Size: 25.0 Ø
- Thickness: 1.0
- Scratch-Dig: 80/50
- Clear Aperture: 22mm Ø min
- Flatness: Commercial
- Substrate Material: Ge
- Angle of Incidence: 0
- 5% Wavelength: N/A
- Type: N/A
- Center Wavelength: 3150 + nom/ - nom
- Operating Temperature: N/A
- Parallelism: 3 arc minutes or better
- Transmission: 92%
- Blocking: 1600nm to 3100nm > OD3 (avg)
- Blocking Range: N/A
- Size: 12.5 Ø
- Thickness: 0.5
- Scratch-Dig: 80/50
- Clear Aperture: 11mm Ø min
- Flatness: TWF: < 2.0 @ 633nm
- Substrate Material: Silicon
- Angle of Incidence: 0 cone
- 5% Wavelength: N/A
- Type: N/A
PART NO.
DESCRIPTION
1 - 5 pcs.
6 - 10 pcs.
> 10 pcs.
Stock Status
$475.00
$475.00
$475.00
In Stock: 1
$42.00
$42.00
$42.00
In Stock: 17
$180.00
$180.00
$180.00
In Stock: 29
$140.00
$140.00
$140.00
In Stock: 35
$127.00
$127.00
$127.00
In Stock: 107
$62.00
$62.00
$62.00
In Stock: 76
$193.00
$193.00
$193.00
In Stock: 14
$193.00
$193.00
$193.00
In Stock: 19
$301.00
$301.00
$301.00
In Stock: 3
$230.00
$230.00
$230.00
In Stock: 7
$146.00
$146.00
$146.00
In Stock: 7
$310.00
$310.00
$310.00
In Stock: 7
$475.00
$475.00
$475.00
In Stock: 7
$710.00
$710.00
$710.00
In Stock: 6
$340.00
$340.00
$340.00
In Stock: 5
$129.00
$129.00
$129.00
In Stock: 22