Dielectric Filters

Optical filters designed with dielectric thin-film coatings to restrict transmission and/or reflection to specific wavelength ranges with high contrast. Learn More

Product	Wavelength Range	Transmittance	Dimensions	Availability	Price (USD)	Add to Cart
Longpass Filter	-	80%	Ø 50 mm	Contact Supplier	Add to cart to request quote
Product Code Cut-On Wavelength 2400 nm Transmittance 80% Diameter 50 mm Dimensions Ø 50 mm Shape Round Substrate Germanium Supplier Location Vermont, USA See product details More from omega optical
Longpass Filter	-	-	Ø 25 mm	Contact Supplier	$ 30.51
Product Code Cut-On Wavelength 590 nm Diameter 25 mm Dimensions Ø 25 mm Thickness 1.1 mm Shape Round Substrate Borosilicate Surface Quality 60-40 scratch-dig Thickness Tolerance ±0.2 mm Diameter Tolerance +0/-0.2 mm Length Tolerance ±0.25 mm Width Tolerance ±0.25 mm Supplier Location United Kingdom; Rhode Island, USA See product details More from Knight Optical
Longpass Filter	200 - 2500 nm	> 90% (870 - 2500 nm)	Ø 25.4 mm (1")	In stock	$ 58.83
Product Code Wavelength Range 200 - 2500 nm Cut-On Wavelength 850 nm (±8 nm) Transmission Wavelength 870 - 2500 nm Coating Dielectric Transmittance > 90% (870 - 2500 nm) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 1.1 mm Shape Round Substrate Borofloat Surface Quality 80-50 scratch-dig Clear Aperture 22.86 mm Thickness Tolerance ±0.1 mm Diameter Tolerance ±0.127 mm Optical Density > 5 (Average) Operating Temperature -100 to 400 °C Refractive Index 1.8 Supplier Location New Jersey, USA See product details More from Edmund Optics
Longpass Filter	-	> 90% (641 - 1427.4 nm)	Ø 25 mm	2 weeks	$ 796.00
Product Code Transmission Wavelength 641 - 1427.4 nm Transmittance > 90% (641 - 1427.4 nm) Diameter 25 mm Dimensions Ø 25 mm Shape Round Surface Quality 60-40 scratch-dig Angle of Incidence 0° Clear Aperture Ø 22 mm Applications Raman Mount Non-Threaded Mount, 25mm Optical Density 6 (Average) Weight 5 g Supplier Location California, USA See product details More from OptoSigma
Longpass Filter	-	> 90% (1164 - 2150 nm)	Ø 25 mm (0.98")	In stock	$ 143.81
Product Code Cut-On Wavelength 1150 nm Transmittance > 90% (1164 - 2150 nm) Diameter 25 mm (0.98") Dimensions Ø 25 mm (0.98") Thickness 3.5 mm Shape Round Substrate UV Fused Silica Surface Quality 40-20 scratch-dig Clear Aperture Ø 21.1 mm (0.83") Optical Density > 5 (200 - 1136 nm) Transmitted Wavefront Error λ/4 (632.8 nm) Supplier Location New Jersey, USA See product details More from Thorlabs
Longpass Filter	-	> 98% (380 - 850 nm, Minimum)	Ø 80 mm	In stock	$ 110.24
Product Code Cut-On Wavelength 370 nm Transmission Wavelength 380 - 850 nm Transmittance > 98% (380 - 850 nm, Minimum) Diameter 80 mm (Outer) Dimensions Ø 80 mm Thickness 6 mm (Mount) 1 mm (Substrate) 8.3 mm (Mount) Shape Round Substrate Acrylic Clear Aperture 73 mm Filter Thread M77x0.75 Supplier Location New Jersey, USA See product details More from Edmund Optics
Longpass Filter	-	99.3753% (475 - 1200 nm)	Ø 21.9 mm	In stock	$ 365.00
Product Code Cut-On Wavelength 475 nm Transmission Wavelength 475 - 1200 nm Transmittance 99.3753% (475 - 1200 nm) Diameter 21.9 mm Dimensions Ø 21.9 mm Shape Round Applications Fluorescence Blocking 6 OD (300 - 458 nm) Mount Non-Threaded Mount, 21.9 mm Supplier Location Vermont, USA Selected Product Option 21.9mmR R=Mounted in Ring See product details More from Chroma
Longpass Filter	-	> 93% (1064 - 1087 nm)	Ø 25 mm	2 weeks	$ 363.00
Product Code Transition Wavelength 1057 nm Transmission Wavelength 1064 - 1087 nm Transmittance > 93% (1064 - 1087 nm) Diameter 25 mm Dimensions Ø 25 mm Thickness 3.5 mm Shape Round Surface Quality 60-40 scratch-dig Angle of Incidence 0° Clear Aperture Ø 22 mm Mount Non-Threaded Mount, 25mm Optical Density 5 (Average) Weight 5 g Supplier Location California, USA See product details More from OptoSigma
Longpass Filter	200 - 1650 nm	> 91% (765 - 1650 nm)	Ø 25 mm	In stock	$ 280.90
Product Code Wavelength Range 200 - 1650 nm Cut-On Wavelength 750 nm (±7.5 nm) Transmission Wavelength 765 - 1650 nm Coating Hard Coating Transmittance > 91% (765 - 1650 nm) Diameter 25 mm Dimensions Ø 25 mm Thickness 3 mm Shape Round Substrate Fused Silica Surface Quality 60-40 scratch-dig Angle of Incidence 0° Clear Aperture > 20 mm Thickness Tolerance ±0.1 mm Diameter Tolerance +0/-0.2 mm Optical Density > 4 (Average) Supplier Location New Jersey, USA See product details More from Edmund Optics
Longpass Filter	-	85%	Ø 50 mm	1 weeks	$ 304.00	Only 10 left
Product Code Cut-On Wavelength 5075 nm Transmittance 85% Diameter 50 mm Dimensions Ø 50 mm Thickness 1 mm Parallelism < 10' Shape Round Surface Quality 80-50 scratch-dig Angle of Incidence 0° Clear Aperture Ø 21 mm (Minimum) Surface Irregularity 5λ (Flatness) Supplier Location New Hampshire, USA See product details More from Andover
Longpass Filter	-	> 90% (790.1 - 1008 nm)	Ø 25 mm	2 weeks	$ 796.00
Product Code Transmission Wavelength 790.1 - 1008 nm Transmittance > 90% (790.1 - 1008 nm) Diameter 25 mm Dimensions Ø 25 mm Shape Round Surface Quality 60-40 scratch-dig Angle of Incidence 0° Clear Aperture Ø 22 mm Applications Raman Mount Non-Threaded Mount, 25mm Optical Density 6 (Average) Weight 5 g Supplier Location California, USA See product details More from OptoSigma
Longpass Filter	-	> 90% (457 - 2150 nm)	Ø 25 mm (0.98")	In stock	$ 143.81
Product Code Cut-On Wavelength 450 nm Transmittance > 90% (457 - 2150 nm) Diameter 25 mm (0.98") Dimensions Ø 25 mm (0.98") Thickness 3.5 mm Shape Round Substrate UV Fused Silica Surface Quality 40-20 scratch-dig Clear Aperture Ø 21.1 mm (0.83") Optical Density > 5 (200 - 443 nm) Transmitted Wavefront Error λ/4 (632.8 nm) Supplier Location New Jersey, USA See product details More from Thorlabs
Longpass Filter	-	-	14.7 x 10.9 mm	Contact Supplier	Add to cart to request quote
Product Code Cut-On Wavelength 790 nm Dimensions 14.7 x 10.9 mm Thickness 1 mm Shape Rectangular Angle of Incidence 0 - 15° Blocking > 5 OD (750 nm) Length 10.9 mm Width 14.7 mm (±0.1) Supplier Location Vermont, USA See product details More from omega optical
Longpass Filter	910 nm, 457 nm, 808 nm, 1064 nm, 1320 nm	-	Ø 12.7 mm (0.5")	Contact Supplier	Add to cart to request quote
Product Code Wavelength Range 910 nm, 457 nm, 808 nm, 1064 nm, 1320 nm Center Wavelength 1064 nm, 1320 nm, 457 nm, 808 nm, 910 nm Reflection Wavelength 910 nm, 457 nm, 808 nm, 1064 nm, 1320 nm Coating Reflective V-Coating (910 nm) AR/Transmissive V-Coating (1064 nm) (Rear) AR/Transmissive V-Coating (1320 nm) (Rear) AR/Transmissive V-Coating (457 nm) (Rear) AR/Transmissive V-Coating (808 nm) (Rear) Reflectance > 99.9% (0°, 910 nm, Front) < 3% (0°, 457 nm, Front) < 3% (0°, 808 nm, Front) < 5% (0°, 1064 nm, Front) < 10% (0°, 1320 nm, Front) < 0.3% (0°, 457 nm, Rear) < 0.3% (0°, 808 nm, Rear) < 3% (0°, 1064 nm, Rear) < 3% (0°, 1320 nm, Rear) Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 6.35 mm (0.25") Edge Thickness 6.35 mm (0.25") Shape Round Substrate Fused Silica Surface Quality 10-5 scratch-dig (Output Face) 5/1x0.025; L1x0.004 (Front), 5/1x0.025; L1x0.004 (Rear) (ISO-7) Angle of Incidence 0° Thickness Tolerance ±0.1 mm Applications Pump Mirror Diameter Tolerance +0.05/-0.05 mm Surface Irregularity λ/10 (546.1 nm, Rear) λ/10 (546.1 nm, Front) Coating Features Multi Wavelength Narrowband Laser Type Nd:YAG Radius of Curvature 300 mm Type of Curvature Plano-Concave Chamfer 0.3 mm (Rear) 0.3 mm (Front) Chamfer Tolerance ±0.1 mm Supplier Location Germany See product details More from LAYERTEC
Longpass Filter	-	> 98% (380 - 850 nm, Minimum)	Ø 27.5 mm	In stock	$ 51.94
Product Code Cut-On Wavelength 370 nm Transmission Wavelength 380 - 850 nm Transmittance > 98% (380 - 850 nm, Minimum) Diameter 27.5 mm (Outer) Dimensions Ø 27.5 mm Thickness 5.2 mm (Mount) 1 mm (Substrate) 7 mm (Mount) Shape Round Substrate Acrylic Clear Aperture 21 mm Filter Thread M25.5x0.50 Supplier Location New Jersey, USA See product details More from Edmund Optics
Longpass Filter	-	85%	Ø 25 mm	1 weeks	$ 6466.00
Product Code Transmittance 85% Diameter 25 mm Dimensions Ø 25 mm Shape Round Substrate Zinc Selenide Applications Imaging Supplier Location New Hampshire, USA See product details More from Andover
Longpass Filter	-	> 93% (546.9 - 900 nm)	Ø 25 mm	6 - 12 weeks	$ 363.00
Product Code Transition Wavelength 542 nm Transmission Wavelength 546.9 - 900 nm Transmittance > 93% (546.9 - 900 nm) Diameter 25 mm Dimensions Ø 25 mm Thickness 3.5 mm Shape Round Surface Quality 60-40 scratch-dig Angle of Incidence 0° Clear Aperture Ø 22 mm Mount Non-Threaded Mount, 25mm Optical Density 5 (Average) Weight 5 g Supplier Location California, USA See product details More from OptoSigma
Longpass Filter	532 nm, 808 nm, 1064 nm	-	Ø 12.7 mm (0.5")	Contact Supplier	$ 175.52
Product Code Wavelength Range 532 nm, 808 nm, 1064 nm Center Wavelength 1064 nm, 532 nm, 808 nm Reflection Wavelength 532 nm, 808 nm, 1064 nm Coating Reflective V-Coating (532 nm) AR/Transmissive V-Coating (1064 nm) (Rear) AR/Transmissive V-Coating (808 nm) (Rear) Reflectance > 99.8% (0°, 532 nm, Front) < 5% (0°, 808 nm, Front) < 5% (0°, 1064 nm, Front) < 0.25% (0°, 808 nm, Rear) < 0.25% (0°, 1064 nm, Rear) Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 6.35 mm (0.25") Parallelism 5' Shape Round Substrate Fused Silica Surface Quality 10-5 scratch-dig (Output Face) 5/1x0.025; L1x0.004 (Front), 5/1x0.025; L1x0.004 (Rear) (ISO-7) Angle of Incidence 0° Thickness Tolerance ±0.1 mm Applications Pump Mirror Diameter Tolerance +0.05/-0.05 mm Surface Irregularity λ/10 (546.1 nm, Rear) λ/10 (546.1 nm, Front) Coating Features Multi Wavelength Narrowband Laser Type Nd:YAG Chamfer 0.3 mm (Rear) 0.3 mm (Front) Chamfer Tolerance ±0.1 mm Supplier Location Germany See product details More from LAYERTEC
Longpass Filter	-	-	Ø 12.5 mm	Contact Supplier	$ 28.22
Product Code Cut-On Wavelength 500 nm Diameter 12.5 mm Dimensions Ø 12.5 mm Thickness 1.1 mm Shape Round Substrate Borosilicate Surface Quality 60-40 scratch-dig Thickness Tolerance ±0.2 mm Diameter Tolerance +0/-0.2 mm Length Tolerance ±0.25 mm Width Tolerance ±0.25 mm Supplier Location United Kingdom; Rhode Island, USA See product details More from Knight Optical
Longpass Filter	350 - 850 nm	> 90% (490 - 850 nm, Average)	25.2 x 35.6 mm	In stock	$ 517.28
Product Code Wavelength Range 350 - 850 nm Cut-On Wavelength 482 nm Reflection Wavelength 350 - 470 nm Transmission Wavelength 490 - 850 nm Coating Hard Coating Reflectance > 98% (350 - 470 nm) Transmittance > 90% (490 - 850 nm, Average) Dimensions 25.2 x 35.6 mm Thickness 1.05 mm Shape Rectangular Substrate Fused Silica Surface Quality 40-20 scratch-dig Angle of Incidence 45° Thickness Tolerance ±0.1 mm Applications Fluorescence Surface Irregularity λ/2 (PV, Flatness) Length 35.6 mm Width 25.2 mm Supplier Location New Jersey, USA See product details More from Edmund Optics